diff --git a/.efrocachemap b/.efrocachemap
index a6f3ff317..7130d8385 100644
--- a/.efrocachemap
+++ b/.efrocachemap
@@ -421,40 +421,40 @@
   "build/assets/ba_data/audio/zoeOw.ogg": "74befe45a8417e95b6a2233c51992a26",
   "build/assets/ba_data/audio/zoePickup01.ogg": "48ab8cddfcde36a750856f3f81dd20c8",
   "build/assets/ba_data/audio/zoeScream01.ogg": "2b468aedfa8741090247f04eb9e6df55",
-  "build/assets/ba_data/data/langdata.json": "0b15d171ebcc56d324875b48436b58c2",
-  "build/assets/ba_data/data/languages/arabic.json": "c21378ee214a9dd0cb2971cd46b74374",
+  "build/assets/ba_data/data/langdata.json": "d3d2ff5c566f5ebbfd4c2cb838bddec8",
+  "build/assets/ba_data/data/languages/arabic.json": "cb5ad1bc4ce57a43902ef2f8770d3721",
   "build/assets/ba_data/data/languages/belarussian.json": "4d89ed5f9c615771d4fa2bb1834942d3",
-  "build/assets/ba_data/data/languages/chinese.json": "1ff4350df6d81c3b1b765fddace6b4c8",
+  "build/assets/ba_data/data/languages/chinese.json": "a87b1ebef100d9cdce0d29123735e90c",
   "build/assets/ba_data/data/languages/chinesetraditional.json": "f858da49be0a5374157c627857751078",
   "build/assets/ba_data/data/languages/croatian.json": "766532c67af5bd0144c2d63cab0516fa",
   "build/assets/ba_data/data/languages/czech.json": "93c5fe0d884d95435da6c675f64e30e0",
   "build/assets/ba_data/data/languages/danish.json": "3fd69080783d5c9dcc0af737f02b6f1e",
   "build/assets/ba_data/data/languages/dutch.json": "22b44a33bf81142ba2befad14eb5746e",
-  "build/assets/ba_data/data/languages/english.json": "b0c8dc8bd35a5606e5d3318d7cb52cba",
+  "build/assets/ba_data/data/languages/english.json": "0e84003f1d3ebf3d48e00ec962c96de4",
   "build/assets/ba_data/data/languages/esperanto.json": "0e397cfa5f3fb8cef5f4a64f21cda880",
   "build/assets/ba_data/data/languages/filipino.json": "afbda3adf14555e1567ee63c32e340e7",
-  "build/assets/ba_data/data/languages/french.json": "4e218dcd488fa63e7db5b4da2261b9e1",
+  "build/assets/ba_data/data/languages/french.json": "49ff6d211537b8003b8241438dca661d",
   "build/assets/ba_data/data/languages/german.json": "450fa41ae264f29a5d1af22143d0d0ad",
-  "build/assets/ba_data/data/languages/gibberish.json": "d9022a7e655da5ac41b9cef7f3b114a6",
+  "build/assets/ba_data/data/languages/gibberish.json": "efcc8b133365c9080f99decb75acde02",
   "build/assets/ba_data/data/languages/greek.json": "287c0ec437b38772284ef9d3e4fb2fc3",
   "build/assets/ba_data/data/languages/hindi.json": "8ea0c58a44a24edb131d0e53b074d1f6",
   "build/assets/ba_data/data/languages/hungarian.json": "796a290a8c44a1e7635208c2ff5fdc6e",
-  "build/assets/ba_data/data/languages/indonesian.json": "15a50690e5588d4acd3e07dfdaf755b0",
-  "build/assets/ba_data/data/languages/italian.json": "e4acd4e58ef8db78f3369bf881f84c55",
+  "build/assets/ba_data/data/languages/indonesian.json": "d7e06971ae1df89ac070593d6ca5cd10",
+  "build/assets/ba_data/data/languages/italian.json": "840a44facc3f203be505e97ce517e008",
   "build/assets/ba_data/data/languages/korean.json": "ca1122a9ee551da3f75ae632012bd0e2",
   "build/assets/ba_data/data/languages/malay.json": "832562ce997fc70704b9234c95fb2e38",
-  "build/assets/ba_data/data/languages/persian.json": "4585070bd509600019ec8dc3bb47bfb8",
+  "build/assets/ba_data/data/languages/persian.json": "07162e160abd7452d1b25d069425653b",
   "build/assets/ba_data/data/languages/polish.json": "5e25428554893155a5f81f3eeb418bae",
-  "build/assets/ba_data/data/languages/portuguese.json": "51e362956f89da3eec980f587c092253",
+  "build/assets/ba_data/data/languages/portuguese.json": "a1af6ebf382969cbe16083fbfdb445da",
   "build/assets/ba_data/data/languages/romanian.json": "aeebdd54f65939c2facc6ac50c117826",
-  "build/assets/ba_data/data/languages/russian.json": "6e524210149d95479d6cbfd3506c630b",
+  "build/assets/ba_data/data/languages/russian.json": "a88a107d9643084ecec41649c1d6300e",
   "build/assets/ba_data/data/languages/serbian.json": "d7452dd72ac0e51680cb39b5ebaa1c69",
   "build/assets/ba_data/data/languages/slovak.json": "27962d53dc3f7dd4e877cd40faafeeef",
-  "build/assets/ba_data/data/languages/spanish.json": "b179da96097e2b4df9f0397da672be69",
+  "build/assets/ba_data/data/languages/spanish.json": "af2d0fd078144dc649da0bb10bb1f5cd",
   "build/assets/ba_data/data/languages/swedish.json": "77d671f10613291ebf9c71da66f18a18",
-  "build/assets/ba_data/data/languages/tamil.json": "65ab7798d637fa62a703750179eeb723",
+  "build/assets/ba_data/data/languages/tamil.json": "b4de1a2851afe4869c82e9acd94cd89c",
   "build/assets/ba_data/data/languages/thai.json": "33f63753c9af9a5b238d229a0bf23fbc",
-  "build/assets/ba_data/data/languages/turkish.json": "71fd6c59650c03164a94d884bc7e5263",
+  "build/assets/ba_data/data/languages/turkish.json": "c3674336e746bf7b23617a6ff296c69a",
   "build/assets/ba_data/data/languages/ukrainian.json": "f72eb51abfbbb56e27866895d7e947d2",
   "build/assets/ba_data/data/languages/venetian.json": "9fe1a58d9e5dfb00f31ce3b2eb9993f4",
   "build/assets/ba_data/data/languages/vietnamese.json": "921cd1e50f60fe3e101f246e172750ba",
@@ -4056,53 +4056,53 @@
   "build/assets/windows/Win32/ucrtbased.dll": "2def5335207d41b21b9823f6805997f1",
   "build/assets/windows/Win32/vc_redist.x86.exe": "b08a55e2e77623fe657bea24f223a3ae",
   "build/assets/windows/Win32/vcruntime140d.dll": "865b2af4d1e26a1a8073c89acb06e599",
-  "build/prefab/full/linux_arm64_gui/debug/ballisticakit": "1204dd2c8c75de926c75e4502f57078c",
-  "build/prefab/full/linux_arm64_gui/release/ballisticakit": "264ac33e0b3a273ffd7ef9769dde5cf6",
-  "build/prefab/full/linux_arm64_server/debug/dist/ballisticakit_headless": "2fa0bf5f0a41977b5ec6b00ed4f17e2a",
-  "build/prefab/full/linux_arm64_server/release/dist/ballisticakit_headless": "ef726bab56ae11cf3ef215e01e21c9ad",
-  "build/prefab/full/linux_x86_64_gui/debug/ballisticakit": "f5d464b59bf9cdb8c1196c7884e2f173",
-  "build/prefab/full/linux_x86_64_gui/release/ballisticakit": "56c886224798634fcea2ddfb5591ce45",
-  "build/prefab/full/linux_x86_64_server/debug/dist/ballisticakit_headless": "8fb46e16a41be252433e01b1fe8e5beb",
-  "build/prefab/full/linux_x86_64_server/release/dist/ballisticakit_headless": "19fb1ea3b52056948eb8cb09527ebe8f",
-  "build/prefab/full/mac_arm64_gui/debug/ballisticakit": "4abe83d555baef553005792bb2afba97",
-  "build/prefab/full/mac_arm64_gui/release/ballisticakit": "0166ad734496b21d70e4d830cbb1ec19",
-  "build/prefab/full/mac_arm64_server/debug/dist/ballisticakit_headless": "bfd52a1ce35dfbabc57e6de74e2a61d0",
-  "build/prefab/full/mac_arm64_server/release/dist/ballisticakit_headless": "f5a7ecb24c30c46f3ea7d340f3373fdb",
-  "build/prefab/full/mac_x86_64_gui/debug/ballisticakit": "3a9e88a6e7242f7488a59c9d8c42e8ee",
-  "build/prefab/full/mac_x86_64_gui/release/ballisticakit": "fba815a45d4eec03f9d03d3adcb65261",
-  "build/prefab/full/mac_x86_64_server/debug/dist/ballisticakit_headless": "f4ee5cbc285b34d905dbc28dbcd25762",
-  "build/prefab/full/mac_x86_64_server/release/dist/ballisticakit_headless": "3fd648584a9a1168b2c7e5cb4e6e18b9",
-  "build/prefab/full/windows_x86_gui/debug/BallisticaKit.exe": "47e28b96a08f68902cbe206e6ba652d1",
-  "build/prefab/full/windows_x86_gui/release/BallisticaKit.exe": "fd7b02a98cc446f848f5c19182737b62",
-  "build/prefab/full/windows_x86_server/debug/dist/BallisticaKitHeadless.exe": "5218e7604faabfb6b5574d756753edc8",
-  "build/prefab/full/windows_x86_server/release/dist/BallisticaKitHeadless.exe": "cc3a4942b16dbd28698cfa677e1bd4ac",
-  "build/prefab/lib/linux_arm64_gui/debug/libballisticaplus.a": "d9f919fe87d497529cd8aed24a961ea3",
-  "build/prefab/lib/linux_arm64_gui/release/libballisticaplus.a": "56972014971024060e6014c2027debd2",
-  "build/prefab/lib/linux_arm64_server/debug/libballisticaplus.a": "d9f919fe87d497529cd8aed24a961ea3",
-  "build/prefab/lib/linux_arm64_server/release/libballisticaplus.a": "56972014971024060e6014c2027debd2",
-  "build/prefab/lib/linux_x86_64_gui/debug/libballisticaplus.a": "3b0da9dfd7b2efe967aaafd3e68d4a86",
-  "build/prefab/lib/linux_x86_64_gui/release/libballisticaplus.a": "d4889e0f44a762e4bf067af33e8885e1",
-  "build/prefab/lib/linux_x86_64_server/debug/libballisticaplus.a": "3b0da9dfd7b2efe967aaafd3e68d4a86",
-  "build/prefab/lib/linux_x86_64_server/release/libballisticaplus.a": "d4889e0f44a762e4bf067af33e8885e1",
-  "build/prefab/lib/mac_arm64_gui/debug/libballisticaplus.a": "5d6b77d2280ad8366f1386f7af0d8e6b",
-  "build/prefab/lib/mac_arm64_gui/release/libballisticaplus.a": "0c8ab52403a77eb7a11137afb6946f8b",
-  "build/prefab/lib/mac_arm64_server/debug/libballisticaplus.a": "5d6b77d2280ad8366f1386f7af0d8e6b",
-  "build/prefab/lib/mac_arm64_server/release/libballisticaplus.a": "0c8ab52403a77eb7a11137afb6946f8b",
-  "build/prefab/lib/mac_x86_64_gui/debug/libballisticaplus.a": "85ab9b2e82eb2ddca6e915b4a3c3589e",
-  "build/prefab/lib/mac_x86_64_gui/release/libballisticaplus.a": "39a0f3efabd9d2f62202ef9790e5cecd",
-  "build/prefab/lib/mac_x86_64_server/debug/libballisticaplus.a": "2609429078b69b48c3cda49abac7065c",
-  "build/prefab/lib/mac_x86_64_server/release/libballisticaplus.a": "39a0f3efabd9d2f62202ef9790e5cecd",
-  "build/prefab/lib/windows/Debug_Win32/BallisticaKitGenericPlus.lib": "61c6cc3186a52a11fb139d223b09cb52",
-  "build/prefab/lib/windows/Debug_Win32/BallisticaKitGenericPlus.pdb": "783012d8d15a7345b4b73d1b9e0b3981",
-  "build/prefab/lib/windows/Debug_Win32/BallisticaKitHeadlessPlus.lib": "2320d558ecad7debab45d723d4324eae",
-  "build/prefab/lib/windows/Debug_Win32/BallisticaKitHeadlessPlus.pdb": "be03efae4c21cd3645754f9dd64e00ad",
-  "build/prefab/lib/windows/Release_Win32/BallisticaKitGenericPlus.lib": "51d50c4a0dae45415ab465f13fdc7a92",
-  "build/prefab/lib/windows/Release_Win32/BallisticaKitGenericPlus.pdb": "10a651d1815134112b9dc3e151c6adfa",
-  "build/prefab/lib/windows/Release_Win32/BallisticaKitHeadlessPlus.lib": "4f7c320636d09bc598c38fc1a2db6d7d",
-  "build/prefab/lib/windows/Release_Win32/BallisticaKitHeadlessPlus.pdb": "9e9244b097860ad6a76478b0a1fa137f",
+  "build/prefab/full/linux_arm64_gui/debug/ballisticakit": "19845a4215bc313b1a4dd9d69942265a",
+  "build/prefab/full/linux_arm64_gui/release/ballisticakit": "40617b9787763afac039ad0d4fc6eadd",
+  "build/prefab/full/linux_arm64_server/debug/dist/ballisticakit_headless": "f824e95be076fe725529fade8e67c7bf",
+  "build/prefab/full/linux_arm64_server/release/dist/ballisticakit_headless": "b9fc05ff4ea772b67d13e4fa502d7e96",
+  "build/prefab/full/linux_x86_64_gui/debug/ballisticakit": "94ab7152a2e807a0a5a86f15fa994ef1",
+  "build/prefab/full/linux_x86_64_gui/release/ballisticakit": "2b8826ec31f972d3695f3cc764c2d948",
+  "build/prefab/full/linux_x86_64_server/debug/dist/ballisticakit_headless": "e4c860d74e777557c7450ad2768397a3",
+  "build/prefab/full/linux_x86_64_server/release/dist/ballisticakit_headless": "95aadd6ff910cc97d713d89e7b4b7204",
+  "build/prefab/full/mac_arm64_gui/debug/ballisticakit": "f9716cc12cd895de300a0e2f4081d26c",
+  "build/prefab/full/mac_arm64_gui/release/ballisticakit": "27b743836b3026b1188fbc61e88ac63f",
+  "build/prefab/full/mac_arm64_server/debug/dist/ballisticakit_headless": "33fded513bdfc0a71e58c29f5f491b2e",
+  "build/prefab/full/mac_arm64_server/release/dist/ballisticakit_headless": "71c7005881cff6ff7746d5727c2707a5",
+  "build/prefab/full/mac_x86_64_gui/debug/ballisticakit": "ee418012d124c7f3268e9f533a865d74",
+  "build/prefab/full/mac_x86_64_gui/release/ballisticakit": "8653169242b6f5b1fdb3649585da37ed",
+  "build/prefab/full/mac_x86_64_server/debug/dist/ballisticakit_headless": "d02f8dd537b65dcd1580f97dc215a2f4",
+  "build/prefab/full/mac_x86_64_server/release/dist/ballisticakit_headless": "7da065b3e1a360df7bc0f0b047e26a8d",
+  "build/prefab/full/windows_x86_gui/debug/BallisticaKit.exe": "8845c707fa5c004f33b84e6515d7de27",
+  "build/prefab/full/windows_x86_gui/release/BallisticaKit.exe": "91cfbdc3c4ed14bb7febd1ebee73a652",
+  "build/prefab/full/windows_x86_server/debug/dist/BallisticaKitHeadless.exe": "34fb266dcb2900931232fc4807d646ad",
+  "build/prefab/full/windows_x86_server/release/dist/BallisticaKitHeadless.exe": "7820f6e29bf5f06ca395ca0e939bb24c",
+  "build/prefab/lib/linux_arm64_gui/debug/libballisticaplus.a": "542350a6380ee39396048bf7e311492e",
+  "build/prefab/lib/linux_arm64_gui/release/libballisticaplus.a": "55e5254a8d2b7a57a70daf0e49c9f3de",
+  "build/prefab/lib/linux_arm64_server/debug/libballisticaplus.a": "542350a6380ee39396048bf7e311492e",
+  "build/prefab/lib/linux_arm64_server/release/libballisticaplus.a": "55e5254a8d2b7a57a70daf0e49c9f3de",
+  "build/prefab/lib/linux_x86_64_gui/debug/libballisticaplus.a": "e5f96639a0806a7c6a7e76c3c602d71e",
+  "build/prefab/lib/linux_x86_64_gui/release/libballisticaplus.a": "aa334ef3a0b9883c64a979abfac03614",
+  "build/prefab/lib/linux_x86_64_server/debug/libballisticaplus.a": "e5f96639a0806a7c6a7e76c3c602d71e",
+  "build/prefab/lib/linux_x86_64_server/release/libballisticaplus.a": "aa334ef3a0b9883c64a979abfac03614",
+  "build/prefab/lib/mac_arm64_gui/debug/libballisticaplus.a": "d8e77274adbd49f54cb0ae10932a1cd4",
+  "build/prefab/lib/mac_arm64_gui/release/libballisticaplus.a": "00d78e3bd28bb2d151f6b2dabb28bf6b",
+  "build/prefab/lib/mac_arm64_server/debug/libballisticaplus.a": "d8e77274adbd49f54cb0ae10932a1cd4",
+  "build/prefab/lib/mac_arm64_server/release/libballisticaplus.a": "00d78e3bd28bb2d151f6b2dabb28bf6b",
+  "build/prefab/lib/mac_x86_64_gui/debug/libballisticaplus.a": "7062c43dfcb22a4dab751d4d63a77bcc",
+  "build/prefab/lib/mac_x86_64_gui/release/libballisticaplus.a": "d5d54553e6069cb258bc2aee960de714",
+  "build/prefab/lib/mac_x86_64_server/debug/libballisticaplus.a": "aad9457aaa3f0d12be511fcec6168090",
+  "build/prefab/lib/mac_x86_64_server/release/libballisticaplus.a": "d5d54553e6069cb258bc2aee960de714",
+  "build/prefab/lib/windows/Debug_Win32/BallisticaKitGenericPlus.lib": "ab4eae4c6dff6e748e67017d21f1e8c8",
+  "build/prefab/lib/windows/Debug_Win32/BallisticaKitGenericPlus.pdb": "f5eac099166269081a9ba49b354979d5",
+  "build/prefab/lib/windows/Debug_Win32/BallisticaKitHeadlessPlus.lib": "52ae423620dede6bfd35face89277298",
+  "build/prefab/lib/windows/Debug_Win32/BallisticaKitHeadlessPlus.pdb": "0fa3164cb9bedac84418c5223b1c8b05",
+  "build/prefab/lib/windows/Release_Win32/BallisticaKitGenericPlus.lib": "b4051c8e3eca5a9d2b1d1fd613c0e563",
+  "build/prefab/lib/windows/Release_Win32/BallisticaKitGenericPlus.pdb": "0a3fed54d59a681df074d56c3dc76268",
+  "build/prefab/lib/windows/Release_Win32/BallisticaKitHeadlessPlus.lib": "42f69e30b6cf087bbc01fa5e508f1e6c",
+  "build/prefab/lib/windows/Release_Win32/BallisticaKitHeadlessPlus.pdb": "08d7f5d30a2c84e2f325d51f08e0611a",
   "src/assets/ba_data/python/babase/_mgen/__init__.py": "f885fed7f2ed98ff2ba271f9dbe3391c",
   "src/assets/ba_data/python/babase/_mgen/enums.py": "28323912b56ec07701eda3d41a6a4101",
-  "src/ballistica/base/mgen/pyembed/binding_base.inc": "6df0f34207346d89a72924249ddd4706",
+  "src/ballistica/base/mgen/pyembed/binding_base.inc": "72bfed2cce8ff19741989dec28302f3f",
   "src/ballistica/base/mgen/pyembed/binding_base_app.inc": "00f81f9bd92386ec12a6e60170678a98",
   "src/ballistica/classic/mgen/pyembed/binding_classic.inc": "3ceb412513963f0818ab39c58bf292e3",
   "src/ballistica/core/mgen/pyembed/binding_core.inc": "9d0a3c9636138e35284923e0c8311c69",
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 406457b2f..fc9444ddc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,4 @@
-### 1.7.28 (build 21556, api 8, 2023-11-01)
+### 1.7.28 (build 21570, api 8, 2023-11-07)
 
 - Massively cleaned up code related to rendering and window systems (OpenGL,
   SDL, etc). This code had been growing into a nasty tangle for 15 years
@@ -202,6 +202,9 @@
   several hundred FPS, milliseconds per frame would drop to 0 which caused some
   problems. Note that scenev1 will be remaining on milliseconds internally for
   compatibility reasons. Scenev2 should move to microseconds though.
+- The V2 account id for the signed in account is now available at
+  `ba*.app.plus.accounts.primary.accountid` (alongside some other existing
+  account info).
   
 ### 1.7.27 (build 21282, api 8, 2023-08-30)
 
diff --git a/src/assets/ba_data/python/babase/_accountv2.py b/src/assets/ba_data/python/babase/_accountv2.py
index 78d138f14..4e22f6d34 100644
--- a/src/assets/ba_data/python/babase/_accountv2.py
+++ b/src/assets/ba_data/python/babase/_accountv2.py
@@ -31,6 +31,8 @@ class AccountV2Subsystem:
     """
 
     def __init__(self) -> None:
+        from babase._login import LoginAdapterGPGS
+
         # Whether or not everything related to an initial login
         # (or lack thereof) has completed. This includes things like
         # workspace syncing. Completion of this is what flips the app
@@ -45,15 +47,7 @@ def __init__(self) -> None:
         self._implicit_state_changed = False
         self._can_do_auto_sign_in = True
 
-        if _babase.app.classic is None:
-            raise RuntimeError('Needs updating for no-classic case.')
-
-        if (
-            _babase.app.classic.platform == 'android'
-            and _babase.app.classic.subplatform == 'google'
-        ):
-            from babase._login import LoginAdapterGPGS
-
+        if _babase.using_google_play_game_services():
             self.login_adapters[LoginType.GPGS] = LoginAdapterGPGS()
 
     def on_app_loading(self) -> None:
@@ -62,10 +56,6 @@ def on_app_loading(self) -> None:
         for adapter in self.login_adapters.values():
             adapter.on_app_loading()
 
-    def set_primary_credentials(self, credentials: str | None) -> None:
-        """Set credentials for the primary app account."""
-        raise NotImplementedError('This should be overridden.')
-
     def have_primary_credentials(self) -> bool:
         """Are credentials currently set for the primary app account?
 
@@ -80,10 +70,6 @@ def primary(self) -> AccountV2Handle | None:
         """The primary account for the app, or None if not logged in."""
         return self.do_get_primary()
 
-    def do_get_primary(self) -> AccountV2Handle | None:
-        """Internal - should be overridden by subclass."""
-        return None
-
     def on_primary_account_changed(
         self, account: AccountV2Handle | None
     ) -> None:
@@ -259,6 +245,14 @@ def on_cloud_connectivity_changed(self, connected: bool) -> None:
         # We may want to auto-sign-in based on this new state.
         self._update_auto_sign_in()
 
+    def do_get_primary(self) -> AccountV2Handle | None:
+        """Internal - should be overridden by subclass."""
+        raise NotImplementedError('This should be overridden.')
+
+    def set_primary_credentials(self, credentials: str | None) -> None:
+        """Set credentials for the primary app account."""
+        raise NotImplementedError('This should be overridden.')
+
     def _update_auto_sign_in(self) -> None:
         plus = _babase.app.plus
         assert plus is not None
@@ -419,14 +413,21 @@ class AccountV2Handle:
     used with some operations such as cloud messaging.
     """
 
-    def __init__(self) -> None:
-        self.tag = '?'
+    accountid: str
+    tag: str
+    workspacename: str | None
+    workspaceid: str | None
+    logins: dict[LoginType, str]
+
+    # def __init__(self) -> None:
+
+    #     self.workspacename: str | None = None
+    #     self.workspaceid: str | None = None
 
-        self.workspacename: str | None = None
-        self.workspaceid: str | None = None
+    #     # Login types and their display-names associated with this account.
+    #     self.logins: dict[LoginType, str] = {}
 
-        # Login types and their display-names associated with this account.
-        self.logins: dict[LoginType, str] = {}
+    #     self.accountid: str =
 
     def __enter__(self) -> None:
         """Support for "with" statement.
diff --git a/src/assets/ba_data/python/babase/_hooks.py b/src/assets/ba_data/python/babase/_hooks.py
index 8ea73a5e6..52aaf840b 100644
--- a/src/assets/ba_data/python/babase/_hooks.py
+++ b/src/assets/ba_data/python/babase/_hooks.py
@@ -33,6 +33,23 @@ def reset_to_main_menu() -> None:
         logging.warning('reset_to_main_menu: no-op due to classic not present.')
 
 
+def get_v2_account_id() -> str | None:
+    """Return the current V2 account id if signed in, or None if not."""
+    try:
+        plus = _babase.app.plus
+        if plus is not None:
+            account = plus.accounts.primary
+            if account is not None:
+                accountid = account.accountid
+                # (Avoids mypy complaints when plus is not present)
+                assert isinstance(accountid, (str, type(None)))
+                return accountid
+        return None
+    except Exception:
+        logging.exception('Error fetching v2 account id.')
+        return None
+
+
 def store_config_fullscreen_on() -> None:
     """The OS has changed our fullscreen state and we should take note."""
     _babase.app.config['Fullscreen'] = True
@@ -123,6 +140,14 @@ def error_message() -> None:
         _babase.screenmessage(Lstr(resource='errorText'), color=(1, 0, 0))
 
 
+def success_message() -> None:
+    from babase._language import Lstr
+
+    if _babase.app.env.gui:
+        _babase.getsimplesound('dingSmall').play()
+        _babase.screenmessage(Lstr(resource='successText'), color=(0, 1, 0))
+
+
 def purchase_not_valid_error() -> None:
     from babase._language import Lstr
 
diff --git a/src/assets/ba_data/python/babase/_login.py b/src/assets/ba_data/python/babase/_login.py
index f6c761c4b..68b2ba627 100644
--- a/src/assets/ba_data/python/babase/_login.py
+++ b/src/assets/ba_data/python/babase/_login.py
@@ -340,8 +340,8 @@ def _update_back_end_active(self) -> None:
 class LoginAdapterNative(LoginAdapter):
     """A login adapter that does its work in the native layer."""
 
-    def __init__(self) -> None:
-        super().__init__(LoginType.GPGS)
+    def __init__(self, login_type: LoginType) -> None:
+        super().__init__(login_type)
 
         # Store int ids for in-flight attempts since they may go through
         # various platform layers and back.
@@ -375,3 +375,6 @@ def on_sign_in_complete(self, attempt_id: int, result: str | None) -> None:
 
 class LoginAdapterGPGS(LoginAdapterNative):
     """Google Play Game Services adapter."""
+
+    def __init__(self) -> None:
+        super().__init__(LoginType.GPGS)
diff --git a/src/assets/ba_data/python/baenv.py b/src/assets/ba_data/python/baenv.py
index d63e86381..45e77e5a8 100644
--- a/src/assets/ba_data/python/baenv.py
+++ b/src/assets/ba_data/python/baenv.py
@@ -52,7 +52,7 @@
 
 # Build number and version of the ballistica binary we expect to be
 # using.
-TARGET_BALLISTICA_BUILD = 21556
+TARGET_BALLISTICA_BUILD = 21570
 TARGET_BALLISTICA_VERSION = '1.7.28'
 
 
diff --git a/src/assets/ba_data/python/baplus/_subsystem.py b/src/assets/ba_data/python/baplus/_subsystem.py
index 00d4f0bfe..97a9cdb51 100644
--- a/src/assets/ba_data/python/baplus/_subsystem.py
+++ b/src/assets/ba_data/python/baplus/_subsystem.py
@@ -1,6 +1,6 @@
 # Released under the MIT License. See LICENSE for details.
 #
-"""Provides classic app subsystem."""
+"""Provides plus app subsystem."""
 from __future__ import annotations
 
 from typing import TYPE_CHECKING
diff --git a/src/assets/ba_data/python/bauiv1lib/store/browser.py b/src/assets/ba_data/python/bauiv1lib/store/browser.py
index 269a8164f..03af613a1 100644
--- a/src/assets/ba_data/python/bauiv1lib/store/browser.py
+++ b/src/assets/ba_data/python/bauiv1lib/store/browser.py
@@ -352,7 +352,7 @@ def _restore_purchases(self) -> None:
 
         plus = bui.app.plus
         assert plus is not None
-        if plus.get_v1_account_state() != 'signed_in':
+        if plus.accounts.primary is None:
             account.show_sign_in_prompt()
         else:
             plus.restore_purchases()
diff --git a/src/ballistica/base/app_adapter/app_adapter_apple.cc b/src/ballistica/base/app_adapter/app_adapter_apple.cc
index 858b1698a..73ce68a38 100644
--- a/src/ballistica/base/app_adapter/app_adapter_apple.cc
+++ b/src/ballistica/base/app_adapter/app_adapter_apple.cc
@@ -51,6 +51,13 @@ void AppAdapterApple::DoPushMainThreadRunnable(Runnable* runnable) {
   BallisticaKit::FromCpp::PushRawRunnableToMain(runnable);
 }
 
+void AppAdapterApple::OnMainThreadStartApp() {
+  AppAdapter::OnMainThreadStartApp();
+#if BA_USE_STORE_KIT
+  BallisticaKit::StoreKitContext::onAppStart();
+#endif
+}
+
 void AppAdapterApple::DoApplyAppConfig() { assert(g_base->InLogicThread()); }
 
 void AppAdapterApple::ApplyGraphicsSettings(const GraphicsSettings* settings) {
diff --git a/src/ballistica/base/app_adapter/app_adapter_apple.h b/src/ballistica/base/app_adapter/app_adapter_apple.h
index 8be9828d6..a7fee4a33 100644
--- a/src/ballistica/base/app_adapter/app_adapter_apple.h
+++ b/src/ballistica/base/app_adapter/app_adapter_apple.h
@@ -26,6 +26,8 @@ class AppAdapterApple : public AppAdapter {
     return val;
   }
 
+  void OnMainThreadStartApp() override;
+
   auto ManagesMainThreadEventLoop() const -> bool override;
   void DoApplyAppConfig() override;
 
diff --git a/src/ballistica/base/base.cc b/src/ballistica/base/base.cc
index 644d31252..6a7a18cd1 100644
--- a/src/ballistica/base/base.cc
+++ b/src/ballistica/base/base.cc
@@ -151,6 +151,43 @@ auto BaseFeatureSet::IsBaseCompletelyImported() -> bool {
   return base_import_completed_ && base_native_import_completed_;
 }
 
+void BaseFeatureSet::SuccessScreenMessage() {
+  if (auto* event_loop = logic->event_loop()) {
+    event_loop->PushCall([this] {
+      python->objs().Get(BasePython::ObjID::kSuccessMessageCall).Call();
+    });
+  } else {
+    Log(LogLevel::kError,
+        "SuccessScreenMessage called without logic event_loop in place.");
+  }
+}
+
+void BaseFeatureSet::ErrorScreenMessage() {
+  if (auto* event_loop = logic->event_loop()) {
+    event_loop->PushCall([this] {
+      python->objs().Get(BasePython::ObjID::kErrorMessageCall).Call();
+    });
+  } else {
+    Log(LogLevel::kError,
+        "ErrorScreenMessage called without logic event_loop in place.");
+  }
+}
+
+auto BaseFeatureSet::GetV2AccountID() -> std::optional<std::string> {
+  auto gil = Python::ScopedInterpreterLock();
+  auto result =
+      python->objs().Get(BasePython::ObjID::kGetV2AccountIdCall).Call();
+  if (result.Exists()) {
+    if (result.ValueIsNone()) {
+      return {};
+    }
+    return result.ValueAsString();
+  } else {
+    Log(LogLevel::kError, "GetV2AccountID() py call errored.");
+    return {};
+  }
+}
+
 void BaseFeatureSet::OnAssetsAvailable() {
   assert(InLogicThread());
 
diff --git a/src/ballistica/base/base.h b/src/ballistica/base/base.h
index c452e7395..27243583a 100644
--- a/src/ballistica/base/base.h
+++ b/src/ballistica/base/base.h
@@ -632,6 +632,13 @@ class BaseFeatureSet : public FeatureSetNativeComponent,
     return *context_ref;
   }
 
+  /// Utility call to print 'Success!' with a happy sound.
+  /// Safe to call from any thread.
+  void SuccessScreenMessage();
+  /// Utility call to print 'Error.' with a beep sound.
+  /// Safe to call from any thread.
+  void ErrorScreenMessage();
+
   void SetCurrentContext(const ContextRef& context);
 
   /// Try to load the plus feature-set and return whether it is available.
@@ -725,6 +732,10 @@ class BaseFeatureSet : public FeatureSetNativeComponent,
 
   void PushMainThreadRunnable(Runnable* runnable) override;
 
+  /// Return the currently signed in V2 account id as
+  /// reported by the Python layer.
+  auto GetV2AccountID() -> std::optional<std::string>;
+
   // Const subsystems.
   AppAdapter* const app_adapter;
   AppConfig* const app_config;
diff --git a/src/ballistica/base/platform/apple/base_platform_apple.cc b/src/ballistica/base/platform/apple/base_platform_apple.cc
index 9bfc4a3e2..62119df5e 100644
--- a/src/ballistica/base/platform/apple/base_platform_apple.cc
+++ b/src/ballistica/base/platform/apple/base_platform_apple.cc
@@ -25,7 +25,8 @@ BasePlatformApple::BasePlatformApple() {
 
 void BasePlatformApple::DoPurchase(const std::string& item) {
 #if BA_USE_STORE_KIT
-  AppleUtils::DoStoreKitPurchase(item);
+  BallisticaKit::StoreKitContext::purchase(item);
+  // AppleUtils::DoStoreKitPurchase(item);
 #else
   BasePlatform::DoPurchase(item);
 #endif
@@ -33,7 +34,8 @@ void BasePlatformApple::DoPurchase(const std::string& item) {
 
 void BasePlatformApple::RestorePurchases() {
 #if BA_USE_STORE_KIT
-  AppleUtils::DoStoreKitPurchaseRestore();
+  BallisticaKit::StoreKitContext::restorePurchases();
+  // AppleUtils::DoStoreKitPurchaseRestore();
 #else
   BasePlatform::RestorePurchases();
 #endif
@@ -41,8 +43,9 @@ void BasePlatformApple::RestorePurchases() {
 
 void BasePlatformApple::PurchaseAck(const std::string& purchase,
                                     const std::string& order_id) {
-#if BA_XCODE_BUILD && BA_USE_STORE_KIT
-  AppleUtils::PurchaseAck(purchase, order_id);
+#if BA_USE_STORE_KIT
+  BallisticaKit::StoreKitContext::purchaseAck(purchase, order_id);
+  // AppleUtils::PurchaseAck(purchase, order_id);
 #else
   BasePlatform::PurchaseAck(purchase, order_id);
 #endif
diff --git a/src/ballistica/base/python/base_python.h b/src/ballistica/base/python/base_python.h
index dc31d93fe..5646cabe7 100644
--- a/src/ballistica/base/python/base_python.h
+++ b/src/ballistica/base/python/base_python.h
@@ -48,6 +48,7 @@ class BasePython {
     kTemporarilyUnavailableMessageCall,
     kInProgressMessageCall,
     kErrorMessageCall,
+    kSuccessMessageCall,
     kPurchaseNotValidErrorCall,
     kPurchaseAlreadyInProgressErrorCall,
     kVROrientationResetCBMessageCall,
@@ -111,6 +112,7 @@ class BasePython {
     kGetDevConsoleTabNamesCall,
     kAppDevConsoleDoRefreshTabCall,
     kUnsupportedControllerMessageCall,
+    kGetV2AccountIdCall,
     kLast  // Sentinel; must be at end.
   };
 
diff --git a/src/ballistica/base/python/methods/python_methods_misc.cc b/src/ballistica/base/python/methods/python_methods_misc.cc
index e6391281a..95ec7032f 100644
--- a/src/ballistica/base/python/methods/python_methods_misc.cc
+++ b/src/ballistica/base/python/methods/python_methods_misc.cc
@@ -1682,6 +1682,27 @@ static PyMethodDef PyAssetLoadsAllowedDef = {
     "(internal)",
 };
 
+// -------------------- using_google_play_game_services ------------------------
+
+static auto PyUsingGooglePlayGameServices(PyObject* self) -> PyObject* {
+  BA_PYTHON_TRY;
+  if (g_buildconfig.use_google_play_game_services()) {
+    Py_RETURN_TRUE;
+  }
+  Py_RETURN_FALSE;
+  BA_PYTHON_CATCH;
+}
+
+static PyMethodDef PyUsingGooglePlayGameServicesDef = {
+    "using_google_play_game_services",           // name
+    (PyCFunction)PyUsingGooglePlayGameServices,  // method
+    METH_NOARGS,                                 // flags
+
+    "using_google_play_game_services() -> bool\n"
+    "\n"
+    "(internal)",
+};
+
 // -----------------------------------------------------------------------------
 
 auto PythonMethodsMisc::GetMethods() -> std::vector<PyMethodDef> {
@@ -1745,6 +1766,7 @@ auto PythonMethodsMisc::GetMethods() -> std::vector<PyMethodDef> {
       PyDevConsoleBaseScaleDef,
       PyDevConsoleRequestRefreshDef,
       PyAssetLoadsAllowedDef,
+      PyUsingGooglePlayGameServicesDef,
   };
 }
 
diff --git a/src/ballistica/base/support/plus_soft.h b/src/ballistica/base/support/plus_soft.h
index b2b387e14..00994d3b5 100644
--- a/src/ballistica/base/support/plus_soft.h
+++ b/src/ballistica/base/support/plus_soft.h
@@ -33,6 +33,7 @@ class PlusSoftInterface {
   virtual auto PutLog(bool fatal) -> bool = 0;
   virtual void AAT() = 0;
   virtual void AATE() = 0;
+  virtual auto GAHU() -> std::optional<std::string> = 0;
   virtual void V1LoginDidChange() = 0;
   virtual void SetAdCompletionCall(PyObject* obj,
                                    bool pass_actually_showed) = 0;
diff --git a/src/ballistica/base/ui/dev_console.cc b/src/ballistica/base/ui/dev_console.cc
index 7ea9fd675..437b81a4c 100644
--- a/src/ballistica/base/ui/dev_console.cc
+++ b/src/ballistica/base/ui/dev_console.cc
@@ -935,7 +935,8 @@ auto DevConsole::HandleKeyPress(const SDL_Keysym* keysym) -> bool {
           g_base->app_adapter->GetKeyRepeatDelay(),
           g_base->app_adapter->GetKeyRepeatInterval(), [this] {
             auto unichars = Utils::UnicodeFromUTF8(input_string_, "fjco33");
-            if (!unichars.empty() && carat_char_ < unichars.size()) {
+            if (!unichars.empty()
+                && carat_char_ < static_cast<int>(unichars.size())) {
               assert(CaratCharValid_());
               unichars.erase(unichars.begin() + carat_char_);
               input_string_ = Utils::UTF8FromUnicode(unichars);
diff --git a/src/ballistica/classic/python/methods/python_methods_classic.cc b/src/ballistica/classic/python/methods/python_methods_classic.cc
index 9fab53da1..52780c227 100644
--- a/src/ballistica/classic/python/methods/python_methods_classic.cc
+++ b/src/ballistica/classic/python/methods/python_methods_classic.cc
@@ -157,9 +157,6 @@ static auto PySetStressTesting(PyObject* self, PyObject* args) -> PyObject* {
   if (!PyArg_ParseTuple(args, "pi", &enable, &player_count)) {
     return nullptr;
   }
-  // g_base->app_adapter->PushMainThreadCall([enable, player_count] {
-  //   g_base->stress_test()->Set(enable, player_count);
-  // });
   g_base->logic->event_loop()->PushCall([enable, player_count] {
     g_classic->stress_test()->Set(enable, player_count);
   });
diff --git a/src/ballistica/core/platform/apple/core_platform_apple.cc b/src/ballistica/core/platform/apple/core_platform_apple.cc
index 2ddce42d2..0e880f507 100644
--- a/src/ballistica/core/platform/apple/core_platform_apple.cc
+++ b/src/ballistica/core/platform/apple/core_platform_apple.cc
@@ -34,6 +34,33 @@ auto CorePlatformApple::GetDeviceV1AccountUUIDPrefix() -> std::string {
 #endif
 }
 
+auto CorePlatformApple::DoGetDeviceName() -> std::string {
+#if BA_OSTYPE_MACOS && BA_XCODE_BUILD
+  // Ask swift for a pretty name if possible.
+  auto val = BallisticaKit::CocoaFromCpp::GetDeviceName();
+  if (val) {
+    return val.get();
+  }
+#elif BA_OSTYPE_IOS_TVOS && BA_XCODE_BUILD
+  return BallisticaKit::UIKitFromCpp::GetDeviceName();
+#endif
+  return CorePlatform::DoGetDeviceName();
+}
+
+auto CorePlatformApple::DoGetDeviceDescription() -> std::string {
+#if BA_OSTYPE_MACOS && BA_XCODE_BUILD
+  return BallisticaKit::CocoaFromCpp::GetDeviceModelName();
+#endif
+  return CorePlatform::DoGetDeviceDescription();
+}
+
+auto CorePlatformApple::GetOSVersionString() -> std::string {
+#if BA_XCODE_BUILD
+  return BallisticaKit::FromCpp::GetOSVersion();
+#endif
+  return CorePlatform::GetOSVersionString();
+}
+
 // Legacy for device-accounts; don't modify this code.
 auto CorePlatformApple::GetRealLegacyDeviceUUID(std::string* uuid) -> bool {
 #if BA_OSTYPE_MACOS && BA_XCODE_BUILD
diff --git a/src/ballistica/core/platform/apple/core_platform_apple.h b/src/ballistica/core/platform/apple/core_platform_apple.h
index 000f79f1a..13af2ba8a 100644
--- a/src/ballistica/core/platform/apple/core_platform_apple.h
+++ b/src/ballistica/core/platform/apple/core_platform_apple.h
@@ -59,6 +59,9 @@ class CorePlatformApple : public CorePlatform {
 
   auto GetDeviceUUIDInputs() -> std::list<std::string> override;
   auto GetLocale() -> std::string override;
+  auto DoGetDeviceName() -> std::string override;
+  auto DoGetDeviceDescription() -> std::string override;
+  auto GetOSVersionString() -> std::string override;
 
  protected:
   auto DoGetDataDirectoryMonolithicDefault() -> std::string override;
diff --git a/src/ballistica/core/platform/core_platform.cc b/src/ballistica/core/platform/core_platform.cc
index 787b517f5..322a06d66 100644
--- a/src/ballistica/core/platform/core_platform.cc
+++ b/src/ballistica/core/platform/core_platform.cc
@@ -112,6 +112,8 @@ void CorePlatform::PostInit() {
   // this sometimes (mainly on windows). Should look into that
   // more closely or at least log it somewhere.
   device_name_ = Utils::GetValidUTF8(DoGetDeviceName().c_str(), "dn");
+  device_description_ =
+      Utils::GetValidUTF8(DoGetDeviceDescription().c_str(), "fc");
   ran_base_post_init_ = true;
 
   // Are we running in a terminal?
@@ -424,6 +426,11 @@ auto CorePlatform::GetDeviceName() -> std::string {
   return device_name_;
 }
 
+auto CorePlatform::GetDeviceDescription() -> std::string {
+  assert(ran_base_post_init_);
+  return device_description_;
+}
+
 auto CorePlatform::DoGetDeviceName() -> std::string {
   // Check devicename in env_var
   char* devicename;
@@ -439,7 +446,11 @@ auto CorePlatform::DoGetDeviceName() -> std::string {
     nbuffer[sizeof(nbuffer) - 1] = 0;  // Make sure its terminated.
     return nbuffer;
   }
-  return "Untitled Device";
+  return "Unnamed Device";
+}
+
+auto CorePlatform::DoGetDeviceDescription() -> std::string {
+  return "Unknown Device Type";
 }
 
 auto CorePlatform::IsRunningOnTV() -> bool { return false; }
@@ -567,7 +578,7 @@ auto CorePlatform::GetIsStdinATerminal() -> bool {
 auto CorePlatform::GetOSVersionString() -> std::string { return ""; }
 
 auto CorePlatform::GetLegacyUserAgentString() -> std::string {
-  std::string device = GetDeviceName();
+  std::string device = GetDeviceDescription();
   std::string version = GetOSVersionString();
   if (!version.empty()) {
     version = " " + version;
@@ -597,7 +608,7 @@ auto CorePlatform::GetLegacyUserAgentString() -> std::string {
     subplatform = "DeMo";
   } else if (g_buildconfig.arcade_build()) {
     subplatform = "ArCd";
-  } else {
+  } else if (g_buildconfig.test_build()) {
     subplatform = "TstB";
   }
 
@@ -608,10 +619,10 @@ auto CorePlatform::GetLegacyUserAgentString() -> std::string {
     subplatform += " OnTV";
   }
 
-  std::string out{std::string("BallisticaKit ") + kEngineVersion + subplatform
-                  + " (" + std::to_string(kEngineBuildNumber) + ") ("
-                  + g_buildconfig.platform_string() + version + "; " + device
-                  + "; " + GetLocale() + ")"};
+  std::string out{std::string("BallisticaKit ") + kEngineVersion + " ("
+                  + std::to_string(kEngineBuildNumber) + ")" + subplatform
+                  + " (" + g_buildconfig.platform_string() + version + "; "
+                  + device + "; " + GetLocale() + ")"};
 
   // This gets shipped to various places which might choke on fancy unicode
   // characters, so let's limit to simple ascii.
diff --git a/src/ballistica/core/platform/core_platform.h b/src/ballistica/core/platform/core_platform.h
index 03a5d20ab..98ec4857e 100644
--- a/src/ballistica/core/platform/core_platform.h
+++ b/src/ballistica/core/platform/core_platform.h
@@ -116,13 +116,15 @@ class CorePlatform {
   /// Return the directory where game replay files live.
   auto GetReplaysDir() -> std::string;
 
-  /// Return en_US or whatnot.
+  /// Return something like `en_US` or whatnot.
   virtual auto GetLocale() -> std::string;
 
   /// Get the older more complex user-agent-string, used for communication
-  /// with v1 servers/etc. This can go away eventually.
-  auto GetLegacyUserAgentString() -> std::string;
+  /// with v1 servers/etc. This should go away eventually.
+  virtual auto GetLegacyUserAgentString() -> std::string;
 
+  /// Return a human readable os version such as "10.4.2".
+  /// Can return a blank string when not known/relevant.
   virtual auto GetOSVersionString() -> std::string;
 
   /// Set an environment variable as utf8, overwriting if it already exists.
@@ -135,6 +137,9 @@ class CorePlatform {
   /// results, etc.
   auto GetDeviceName() -> std::string;
 
+  /// Return a general identifier for the hardware device.
+  auto GetDeviceDescription() -> std::string;
+
   /// Get a UUID for use with things like device-accounts. This function
   /// should not be used for other purposes, should not be modified, and
   /// eventually should go away after device accounts are phased out. Also,
@@ -407,9 +412,15 @@ class CorePlatform {
   /// Called once per platform to determine touchscreen presence.
   virtual auto DoHasTouchScreen() -> bool;
 
-  /// Platforms should override this to provide device name.
+  /// Platforms should override this to provide a device name suitable for
+  /// displaying in network join lists/etc. Technically this is more like
+  /// hostname.
   virtual auto DoGetDeviceName() -> std::string;
 
+  /// Platforms should override this to provide a generic description of the
+  /// device; something like "iPhone 12 Pro".
+  virtual auto DoGetDeviceDescription() -> std::string;
+
   /// Attempt to actually create a directory.
   /// Should *not* raise Exceptions if it already exists or if quiet is true.
   virtual void DoMakeDir(const std::string& dir, bool quiet);
@@ -462,6 +473,7 @@ class CorePlatform {
   bool ran_base_post_init_ : 1 {};
   millisecs_t start_time_millisecs_{};
   std::string device_name_;
+  std::string device_description_;
   std::string legacy_device_uuid_;
   std::string volatile_data_dir_;
   std::string replays_dir_;
diff --git a/src/ballistica/core/platform/linux/core_platform_linux.cc b/src/ballistica/core/platform/linux/core_platform_linux.cc
index 855503ac4..c6e32e873 100644
--- a/src/ballistica/core/platform/linux/core_platform_linux.cc
+++ b/src/ballistica/core/platform/linux/core_platform_linux.cc
@@ -3,8 +3,10 @@
 #if BA_OSTYPE_LINUX
 #include "ballistica/core/platform/linux/core_platform_linux.h"
 
-#include <stdlib.h>
+#include <sys/utsname.h>
 
+#include <cstdlib>
+#include <cstring>
 #include <string>
 
 namespace ballistica::core {
@@ -29,6 +31,53 @@ std::string CorePlatformLinux::GenerateUUID() {
   return val;
 }
 
+auto CorePlatformLinux::DoGetDeviceDescription() -> std::string {
+  // Let's look for something pretty like "Ubuntu 20.04", etc.
+  FILE* file = fopen("/etc/os-release", "r");
+  std::optional<std::string> out;
+  if (file != NULL) {
+    char line[256];  // Adjust the buffer size as needed
+
+    while (fgets(line, sizeof(line), file)) {
+      if (strstr(line, "PRETTY_NAME=") != nullptr) {
+        // Extract the distribution name and version
+        char* start = strchr(line, '"');
+        char* end = strrchr(line, '"');
+        if (start != nullptr && end != nullptr) {
+          *end = '\0';  // Remove the trailing quote
+          out = start + 1;
+        }
+        break;
+      }
+    }
+    fclose(file);
+  }
+  if (out.has_value()) {
+    return *out;
+  }
+  return CorePlatform::GetDeviceDescription();
+}
+
+auto CorePlatformLinux::GetOSVersionString() -> std::string {
+  std::optional<std::string> out;
+  struct utsname uts;
+  if (uname(&uts) == 0) {
+    out = uts.release;
+
+    // Try to parse 3 version numbers.
+    unsigned int major, minor, bugfix;
+    if (sscanf(uts.release, "%u.%u.%u", &major, &minor, &bugfix) == 3) {
+      char buf[128];
+      snprintf(buf, sizeof(buf), "%.u.%u.%u", major, minor, bugfix);
+      out = buf;
+    }
+  }
+  if (out.has_value()) {
+    return *out;
+  }
+  return CorePlatform::GetOSVersionString();
+}
+
 auto CorePlatformLinux::GetDeviceUUIDInputs() -> std::list<std::string> {
   std::list<std::string> out;
 
diff --git a/src/ballistica/core/platform/linux/core_platform_linux.h b/src/ballistica/core/platform/linux/core_platform_linux.h
index 2bdcbf976..22834b6c8 100644
--- a/src/ballistica/core/platform/linux/core_platform_linux.h
+++ b/src/ballistica/core/platform/linux/core_platform_linux.h
@@ -21,6 +21,8 @@ class CorePlatformLinux : public CorePlatform {
   auto GetPlatformName() -> std::string override;
   auto GetSubplatformName() -> std::string override;
   auto GetDeviceUUIDInputs() -> std::list<std::string> override;
+  auto DoGetDeviceDescription() -> std::string override;
+  auto GetOSVersionString() -> std::string override;
 };
 
 }  // namespace ballistica::core
diff --git a/src/ballistica/core/platform/windows/core_platform_windows.cc b/src/ballistica/core/platform/windows/core_platform_windows.cc
index 8a44a78e1..7a3d06ac4 100644
--- a/src/ballistica/core/platform/windows/core_platform_windows.cc
+++ b/src/ballistica/core/platform/windows/core_platform_windows.cc
@@ -814,15 +814,33 @@ std::string CorePlatformWindows::DoGetDeviceName() {
   wchar_t computer_name[256];
   DWORD computer_name_size = 256;
   int result = GetComputerName(computer_name, &computer_name_size);
-  if (result == 0) {
-    device_name = "BallisticaKit Game";
-  } else {
+  if (result != 0) {
+    device_name = UTF8Encode(computer_name);
+    if (device_name.size() != 0) {
+      return device_name;
+    }
+  }
+  // Fall back on default.
+  return CorePlatform::DoGetDeviceName();
+}
+
+std::string CorePlatformWindows::DoGetDeviceDescription() {
+  std::string device_name;
+  wchar_t computer_name[256];
+  DWORD computer_name_size = 256;
+
+  // We currently return computer name for both the device name
+  // and description. Is there a way to get a more hardware-y name
+  // (like manufacturer make/model?)
+  int result = GetComputerName(computer_name, &computer_name_size);
+  if (result != 0) {
     device_name = UTF8Encode(computer_name);
-    if (device_name.size() == 0) {
-      device_name = "BallisticaKit Game";
+    if (device_name.size() != 0) {
+      return device_name;
     }
   }
-  return device_name;
+  // Fall back on default.
+  return CorePlatform::DoGetDeviceDescription();
 }
 
 bool CorePlatformWindows::DoHasTouchScreen() { return false; }
diff --git a/src/ballistica/core/platform/windows/core_platform_windows.h b/src/ballistica/core/platform/windows/core_platform_windows.h
index fe77ae712..ede060eb4 100644
--- a/src/ballistica/core/platform/windows/core_platform_windows.h
+++ b/src/ballistica/core/platform/windows/core_platform_windows.h
@@ -40,6 +40,7 @@ class CorePlatformWindows : public CorePlatform {
   void DoMakeDir(const std::string& dir, bool quiet) override;
   auto GetLocale() -> std::string override;
   auto DoGetDeviceName() -> std::string override;
+  auto DoGetDeviceDescription() -> std::string override;
   auto DoHasTouchScreen() -> bool override;
   void EmitPlatformLog(const std::string& name, LogLevel level,
                        const std::string& msg) override;
diff --git a/src/ballistica/shared/ballistica.cc b/src/ballistica/shared/ballistica.cc
index 6b0a60e76..30eefd206 100644
--- a/src/ballistica/shared/ballistica.cc
+++ b/src/ballistica/shared/ballistica.cc
@@ -39,7 +39,7 @@ auto main(int argc, char** argv) -> int {
 namespace ballistica {
 
 // These are set automatically via script; don't modify them here.
-const int kEngineBuildNumber = 21556;
+const int kEngineBuildNumber = 21570;
 const char* kEngineVersion = "1.7.28";
 const int kEngineApiVersion = 8;
 
diff --git a/src/ballistica/shared/buildconfig/buildconfig_cmake.h b/src/ballistica/shared/buildconfig/buildconfig_cmake.h
index d8a338ebf..e4d69fcba 100644
--- a/src/ballistica/shared/buildconfig/buildconfig_cmake.h
+++ b/src/ballistica/shared/buildconfig/buildconfig_cmake.h
@@ -13,9 +13,9 @@
 
 // We currently support regular and client builds on 64 bit mac posix
 #if __amd64__
-#define BA_PLATFORM_STRING "x86_64_macos"
+#define BA_PLATFORM_STRING "macos x86_64"
 #elif __aarch64__
-#define BA_PLATFORM_STRING "arm64_macos"
+#define BA_PLATFORM_STRING "macos arm64"
 #else
 #error Unknown processor architecture.
 #endif
@@ -26,16 +26,16 @@
 #elif __linux__
 
 #if __amd64__
-#define BA_PLATFORM_STRING "x86_64_linux"
+#define BA_PLATFORM_STRING "linux x86_64"
 #define BA_OSTYPE_LINUX 1
 #elif __i386__
-#define BA_PLATFORM_STRING "x86_32_linux"
+#define BA_PLATFORM_STRING "linux x86"
 #define BA_OSTYPE_LINUX 1
 #elif __arm__
-#define BA_PLATFORM_STRING "arm_linux"
+#define BA_PLATFORM_STRING "linux arm"
 #define BA_OSTYPE_LINUX 1
 #elif __aarch64__
-#define BA_PLATFORM_STRING "arm64_linux"
+#define BA_PLATFORM_STRING "linux arm64"
 #define BA_OSTYPE_LINUX 1
 
 #else
diff --git a/src/ballistica/shared/buildconfig/buildconfig_common.h b/src/ballistica/shared/buildconfig/buildconfig_common.h
index 7c68aa976..62ff658fe 100644
--- a/src/ballistica/shared/buildconfig/buildconfig_common.h
+++ b/src/ballistica/shared/buildconfig/buildconfig_common.h
@@ -166,6 +166,10 @@ namespace ballistica {
 #define BA_AMAZON_BUILD 0
 #endif
 
+#ifndef BA_STEAM_BUILD
+#define BA_STEAM_BUILD 0
+#endif
+
 #ifndef BA_GOOGLE_BUILD
 #define BA_GOOGLE_BUILD 0
 #endif
@@ -259,6 +263,7 @@ class BuildConfig {
   bool google_build() const { return EXPBOOL_(BA_GOOGLE_BUILD); }
   bool demo_build() const { return EXPBOOL_(BA_DEMO_BUILD); }
   bool arcade_build() const { return EXPBOOL_(BA_ARCADE_BUILD); }
+  bool steam_build() const { return EXPBOOL_(BA_STEAM_BUILD); }
   bool contains_python_dist() const {
     return EXPBOOL_(BA_CONTAINS_PYTHON_DIST);
   }
diff --git a/src/ballistica/shared/buildconfig/buildconfig_windows_common.h b/src/ballistica/shared/buildconfig/buildconfig_windows_common.h
index 86654b77d..69c62f06f 100644
--- a/src/ballistica/shared/buildconfig/buildconfig_windows_common.h
+++ b/src/ballistica/shared/buildconfig/buildconfig_windows_common.h
@@ -32,7 +32,16 @@
 
 #define WIN32_LEAN_AND_MEAN  // Exclude rarely-used stuff from Windows headers
 
-#define BA_PLATFORM_STRING "x86_windows"
+#if defined(_M_ARM64)
+#define BA_PLATFORM_STRING "windows arm64"
+#elif defined(_M_IX86)
+#define BA_PLATFORM_STRING "windows x86"
+#elif defined(_M_X64)
+#define BA_PLATFORM_STRING "windows x86_64"
+#else
+#error unknown cpu architecture
+#endif
+
 #define BA_OSTYPE_WINDOWS 1
 
 #define BA_SOCKET_SEND_DATA_TYPE char
diff --git a/src/ballistica/shared/python/python_ref.cc b/src/ballistica/shared/python/python_ref.cc
index de883e136..51f0d88cc 100644
--- a/src/ballistica/shared/python/python_ref.cc
+++ b/src/ballistica/shared/python/python_ref.cc
@@ -151,6 +151,12 @@ auto PythonRef::Type() const -> PythonRef {
   return {PyObject_Type(obj_), PythonRef::kSteal};
 }
 
+auto PythonRef::ValueIsNone() const -> bool {
+  assert(Python::HaveGIL());
+  ThrowIfUnset();
+  return obj_ == Py_None;
+}
+
 auto PythonRef::ValueAsLString() const -> std::string {
   assert(Python::HaveGIL());
   ThrowIfUnset();
diff --git a/src/ballistica/shared/python/python_ref.h b/src/ballistica/shared/python/python_ref.h
index 0370dffea..141aeebfc 100644
--- a/src/ballistica/shared/python/python_ref.h
+++ b/src/ballistica/shared/python/python_ref.h
@@ -162,6 +162,8 @@ class PythonRef {
   /// Return the object's Python type object.
   auto Type() const -> PythonRef;
 
+  auto ValueIsNone() const -> bool;
+
   /// For string and babase.Lstr types, returns a utf8 string.
   /// Throws an exception for other types.
   auto ValueAsLString() const -> std::string;
diff --git a/src/ballistica/ui_v1/python/methods/python_methods_ui_v1.cc b/src/ballistica/ui_v1/python/methods/python_methods_ui_v1.cc
index 6b1cdf498..8b1c68116 100644
--- a/src/ballistica/ui_v1/python/methods/python_methods_ui_v1.cc
+++ b/src/ballistica/ui_v1/python/methods/python_methods_ui_v1.cc
@@ -2717,14 +2717,14 @@ static auto PyOpenURL(PyObject* self, PyObject* args, PyObject* keywds)
     return nullptr;
   }
   // Need to pass a self-contained string to a lambda; not a char*.
-  std::string address2{address};
+  std::string address_s{address};
 
   assert(g_base->app_adapter);
   if (force_internal) {
     g_base->ui->ShowURL(address);
   } else {
     g_base->app_adapter->PushMainThreadCall(
-        [address2] { g_base->platform->OpenURL(address2); });
+        [address_s] { g_base->platform->OpenURL(address_s); });
   }
   Py_RETURN_NONE;
   BA_PYTHON_CATCH;
diff --git a/src/meta/babasemeta/pyembed/binding_base.py b/src/meta/babasemeta/pyembed/binding_base.py
index 95e1da12a..ec06b3d52 100644
--- a/src/meta/babasemeta/pyembed/binding_base.py
+++ b/src/meta/babasemeta/pyembed/binding_base.py
@@ -31,6 +31,7 @@
     _hooks.temporarily_unavailable_message,  # kTemporarilyUnavailableMessageCall
     _hooks.in_progress_message,  # kInProgressMessageCall
     _hooks.error_message,  # kErrorMessageCall
+    _hooks.success_message,  # kSuccessMessageCall
     _hooks.purchase_not_valid_error,  # kPurchaseNotValidErrorCall
     _hooks.purchase_already_in_progress_error,  # kPurchaseAlreadyInProgressErrorCall
     _hooks.orientation_reset_cb_message,  # kVROrientationResetCBMessageCall
@@ -57,6 +58,7 @@
     _hooks.string_edit_adapter_can_be_replaced,  # kStringEditAdapterCanBeReplacedCall
     _hooks.get_dev_console_tab_names,  # kGetDevConsoleTabNamesCall
     _hooks.unsupported_controller_message,  # kUnsupportedControllerMessageCall
+    _hooks.get_v2_account_id,  # kGetV2AccountIdCall
     _language.Lstr,  # kLStrClass
     _general.Call,  # kCallClass
     _apputils.garbage_collect_session_end,  # kGarbageCollectSessionEndCall
diff --git a/tools/bacommon/login.py b/tools/bacommon/login.py
index c8ec0057a..2d6e50535 100644
--- a/tools/bacommon/login.py
+++ b/tools/bacommon/login.py
@@ -20,6 +20,9 @@ class LoginType(Enum):
     # Google Play Game Services
     GPGS = 'gpgs'
 
+    # Apple's Game Center
+    GAME_CENTER = 'game_center'
+
     @property
     def displayname(self) -> str:
         """Human readable name for this value."""
@@ -29,3 +32,5 @@ def displayname(self) -> str:
                 return 'Email/Password'
             case cls.GPGS:
                 return 'Google Play Games'
+            case cls.GAME_CENTER:
+                return 'Game Center'
diff --git a/tools/batools/build.py b/tools/batools/build.py
index 682c7cf33..004ab926a 100644
--- a/tools/batools/build.py
+++ b/tools/batools/build.py
@@ -43,8 +43,8 @@ class PyRequirement:
 # remove our custom module based stuff soon if nobody complains, which
 # would free us to theoretically move to a requirements.txt based setup.
 PY_REQUIREMENTS = [
-    PyRequirement(pipname='pylint', minversion=[3, 0, 1]),
-    PyRequirement(pipname='mypy', minversion=[1, 6, 0]),
+    PyRequirement(pipname='pylint', minversion=[3, 0, 2]),
+    PyRequirement(pipname='mypy', minversion=[1, 6, 1]),
     PyRequirement(pipname='cpplint', minversion=[1, 6, 1]),
     PyRequirement(pipname='pytest', minversion=[7, 4, 2]),
     PyRequirement(pipname='pytz', minversion=[2023, 3]),
diff --git a/tools/batools/xcodeproject.py b/tools/batools/xcodeproject.py
index 0d331df69..54afaae94 100644
--- a/tools/batools/xcodeproject.py
+++ b/tools/batools/xcodeproject.py
@@ -423,10 +423,20 @@ def _target_names_for_file(self, filename: str) -> list[str] | None:
                 f'{self.pnameu} macOS AppStore',
                 f'{self.pnameu} macOS Steam',
             ]
+        # A few things only for AppStore bound builds.
+        if filename == 'StoreKitContext.swift':
+            return [
+                f'{self.pnameu} iOS',
+                f'{self.pnameu} tvOS',
+                f'{self.pnameu} macOS AppStore',
+            ]
 
         # UIKit stuff applies to our iOS/tvOS targets.
         if filename.startswith('UIKit') and filename.endswith('.swift'):
-            return [f'{self.pnameu} iOS', f'{self.pnameu} tvOS']
+            return [
+                f'{self.pnameu} iOS',
+                f'{self.pnameu} tvOS',
+            ]
 
         # Everything else applies to everything.
         return None