diff --git a/Makefile b/Makefile
index 9fa039d..6759c9f 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-.PHONY: all tools clean tidy tpp
+.PHONY: all tools clean tidy
 
 .SUFFIXES:
 .SECONDEXPANSION:
@@ -17,8 +17,6 @@ endif
 COMPILE_FLAGS :=
 
 all: $(ROM)
-tpp: COMPILE_FLAGS += -D _TPP
-tpp: all
 
 ifeq (,$(filter tools clean tidy,$(MAKECMDGOALS)))
 Makefile: tools
diff --git a/engine/pinball_game/evolution_mode.asm b/engine/pinball_game/evolution_mode.asm
index c9d6b30..ac2fc34 100644
--- a/engine/pinball_game/evolution_mode.asm
+++ b/engine/pinball_game/evolution_mode.asm
@@ -115,16 +115,9 @@ ShowStartEvolutionModeText:
 
 IsBreedingAllowed:
 ; Sets carry flag if not allowed.
-IF DEF(_TPP)	
 ; Allow breeding on every stage.	
 	and a	
-	ret	
-ELSE
-; Don't breed on Red/Blue stages
-	ld a, [wCurrentStage]
-	cp STAGE_BLUE_FIELD_BOTTOM + 1
 	ret
-ENDC
 
 InitEvolutionSelectionMenu:
 ; Initializes the list menu, which the player uses to select which pokemon to evolve.