>>48144370If I remember correctly, in English Gold and Silver Coin coin counter that shows up on the screen when you select Coin Case is an unterminated string that makes the game code execution jump to a certain location that can be manipulated by listening to Pokemon cries. Using certain cries and other setup you can force the game to start executing PC box names that can be easily manipulated by the player, which is basically equal to writing assembly code. This gives you the power to warp the game in any way imaginable, as long as the code fits in 14 box names.