Is there any way to patch normal NDS games to have rumble (even if they dont normally) like 1. When a certain sound is played it rumbles 2. When a certain code is run (like smashing into a wall) rumble 3. When a button is pressed rumble (like when Y is pressed)
"Is there any way to patch normal NDS games to have rumble" Not unless you know how to write NDS game code. The rumble feature is specifically written into the game and is part of the native game code.