diff --git a/src/main/java/com/onarandombox/multiverseinventories/MultiverseInventories.java b/src/main/java/com/onarandombox/multiverseinventories/MultiverseInventories.java
index 08905e84..971e882e 100644
--- a/src/main/java/com/onarandombox/multiverseinventories/MultiverseInventories.java
+++ b/src/main/java/com/onarandombox/multiverseinventories/MultiverseInventories.java
@@ -12,7 +12,7 @@
 import com.onarandombox.MultiverseCore.api.MVPlugin;
 import com.onarandombox.MultiverseCore.commandtools.MVCommandManager;
 import com.onarandombox.multiverseinventories.command.AddSharesCommand;
-import com.onarandombox.multiverseinventories.command.AddWorldCommand;
+import com.onarandombox.multiverseinventories.command.AddWorldsCommand;
 import com.onarandombox.multiverseinventories.command.CreateGroupCommand;
 import com.onarandombox.multiverseinventories.command.DeleteGroupCommand;
 import com.onarandombox.multiverseinventories.command.GroupCommand;
@@ -22,7 +22,7 @@
 import com.onarandombox.multiverseinventories.command.MigrateCommand;
 import com.onarandombox.multiverseinventories.command.ReloadCommand;
 import com.onarandombox.multiverseinventories.command.RemoveSharesCommand;
-import com.onarandombox.multiverseinventories.command.RemoveWorldCommand;
+import com.onarandombox.multiverseinventories.command.RemoveWorldsCommand;
 import com.onarandombox.multiverseinventories.command.SpawnCommand;
 import com.onarandombox.multiverseinventories.command.ToggleCommand;
 import com.onarandombox.multiverseinventories.command.tools.MVInvCommandCompletions;
@@ -202,7 +202,7 @@ private void registerCommands() {
 
         MVCommandManager commandManager = this.getCore().getMVCommandManager();
         commandManager.registerCommand(new AddSharesCommand(this));
-        commandManager.registerCommand(new AddWorldCommand(this));
+        commandManager.registerCommand(new AddWorldsCommand(this));
         commandManager.registerCommand(new CreateGroupCommand(this));
         commandManager.registerCommand(new DeleteGroupCommand(this));
         commandManager.registerCommand(new GroupCommand(this));
@@ -212,7 +212,7 @@ private void registerCommands() {
         commandManager.registerCommand(new MigrateCommand(this));
         commandManager.registerCommand(new ReloadCommand(this));
         commandManager.registerCommand(new RemoveSharesCommand(this));
-        commandManager.registerCommand(new RemoveWorldCommand(this));
+        commandManager.registerCommand(new RemoveWorldsCommand(this));
         commandManager.registerCommand(new SpawnCommand(this));
         commandManager.registerCommand(new ToggleCommand(this));
     }
diff --git a/src/main/java/com/onarandombox/multiverseinventories/command/AddWorldCommand.java b/src/main/java/com/onarandombox/multiverseinventories/command/AddWorldsCommand.java
similarity index 67%
rename from src/main/java/com/onarandombox/multiverseinventories/command/AddWorldCommand.java
rename to src/main/java/com/onarandombox/multiverseinventories/command/AddWorldsCommand.java
index da54cd78..efd6e43c 100644
--- a/src/main/java/com/onarandombox/multiverseinventories/command/AddWorldCommand.java
+++ b/src/main/java/com/onarandombox/multiverseinventories/command/AddWorldsCommand.java
@@ -1,5 +1,9 @@
 package com.onarandombox.multiverseinventories.command;
 
+import java.util.Arrays;
+import java.util.List;
+import java.util.stream.Collectors;
+
 import com.onarandombox.MultiverseCore.api.MVWorld;
 import com.onarandombox.acf.BukkitCommandIssuer;
 import com.onarandombox.acf.annotation.CommandAlias;
@@ -14,33 +18,34 @@
 import org.jetbrains.annotations.NotNull;
 
 @CommandAlias("mvinv")
-public class AddWorldCommand extends InventoriesCommand {
-    public AddWorldCommand(@NotNull MultiverseInventories plugin) {
+public class AddWorldsCommand extends InventoriesCommand {
+    public AddWorldsCommand(@NotNull MultiverseInventories plugin) {
         super(plugin);
         setPerm(Perm.COMMAND_ADDWORLD);
     }
 
-    @Subcommand("addworld")
-    @CommandCompletion("@mvworlds @worldGroups")
-    @Syntax("<world> <group>")
+    @Subcommand("addworlds")
+    @CommandCompletion("@mvworlds:multiple @worldGroups")
+    @Syntax("<world[,extra]> <group>")
     @Description("Adds a World to a World Group.")
     public void onAddWorldCommand(BukkitCommandIssuer issuer,
 
                                   @Syntax("<world>")
                                   @Description("World name to add.")
-                                  MVWorld world,
+                                  MVWorld[] world,
 
                                   @Syntax("<group>")
                                   @Description("Group you want to add the world to.")
                                   WorldGroup group
     ) {
-        if (group.containsWorld(world.getName())) {
-            this.messager.normal(Message.WORLD_ALREADY_EXISTS, issuer.getIssuer(), world.getName(), group.getName());
+        List<String> worldNames = Arrays.stream(world).map(MVWorld::getName).collect(Collectors.toList());
+        String worldNamesString = String.join(", ", worldNames);
+        if (!group.getWorlds().addAll(worldNames)) {
+            this.messager.normal(Message.WORLD_ALREADY_EXISTS, issuer.getIssuer(), worldNamesString, group.getName());
             return;
         }
-        group.addWorld(world.getCBWorld());
         this.plugin.getGroupManager().updateGroup(group);
         this.plugin.getMVIConfig().save();
-        this.messager.normal(Message.WORLD_ADDED, issuer.getIssuer(), world.getName(), group.getName());
+        this.messager.normal(Message.WORLD_ADDED, issuer.getIssuer(), worldNamesString, group.getName());
     }
 }
diff --git a/src/main/java/com/onarandombox/multiverseinventories/command/RemoveWorldCommand.java b/src/main/java/com/onarandombox/multiverseinventories/command/RemoveWorldsCommand.java
similarity index 70%
rename from src/main/java/com/onarandombox/multiverseinventories/command/RemoveWorldCommand.java
rename to src/main/java/com/onarandombox/multiverseinventories/command/RemoveWorldsCommand.java
index 5997730c..fa639ede 100644
--- a/src/main/java/com/onarandombox/multiverseinventories/command/RemoveWorldCommand.java
+++ b/src/main/java/com/onarandombox/multiverseinventories/command/RemoveWorldsCommand.java
@@ -1,5 +1,9 @@
 package com.onarandombox.multiverseinventories.command;
 
+import java.util.Arrays;
+import java.util.Set;
+import java.util.stream.Collectors;
+
 import com.onarandombox.MultiverseCore.api.MVWorld;
 import com.onarandombox.acf.BukkitCommandIssuer;
 import com.onarandombox.acf.annotation.CommandAlias;
@@ -14,33 +18,34 @@
 import org.jetbrains.annotations.NotNull;
 
 @CommandAlias("mvinv")
-public class RemoveWorldCommand extends InventoriesCommand {
-    public RemoveWorldCommand(@NotNull MultiverseInventories plugin) {
+public class RemoveWorldsCommand extends InventoriesCommand {
+    public RemoveWorldsCommand(@NotNull MultiverseInventories plugin) {
         super(plugin);
         setPerm(Perm.COMMAND_ADDWORLD);
     }
 
-    @Subcommand("removeworld")
+    @Subcommand("removeworlds")
     @CommandCompletion("@mvworlds @worldGroups")
-    @Syntax("<world> <group>")
+    @Syntax("<world[,extra]> <group>")
     @Description("Adds a World to a World Group.")
     public void onRemoveWorldCommand(BukkitCommandIssuer issuer,
 
                                      @Syntax("<world>")
                                      @Description("World name to remove.")
-                                     MVWorld world,
+                                     MVWorld[] world,
 
                                      @Syntax("<group>")
                                      @Description("Group you want to remove the world from.")
                                      @NotNull WorldGroup group
     ) {
-        if (!group.containsWorld(world.getName())) {
-            this.messager.normal(Message.WORLD_NOT_IN_GROUP, issuer.getIssuer(), world.getName(), group.getName());
+        Set<String> worldNames = Arrays.stream(world).map(MVWorld::getName).collect(Collectors.toSet());
+        String worldNamesString = String.join(", ", worldNames);
+        if (!group.getWorlds().removeAll(worldNames)) {
+            this.messager.normal(Message.WORLD_NOT_IN_GROUP, issuer.getIssuer(), worldNamesString, group.getName());
             return;
         }
-        group.removeWorld(world.getCBWorld());
         this.plugin.getGroupManager().updateGroup(group);
         this.plugin.getMVIConfig().save();
-        this.messager.normal(Message.WORLD_REMOVED, issuer.getIssuer(), world.getName(), group.getName());
+        this.messager.normal(Message.WORLD_REMOVED, issuer.getIssuer(), worldNamesString, group.getName());
     }
 }