I used Game Shark on a few different games. Mostly on the N64. I tried years later on the PS2, but I broke it I think xD. Only got to use it on FFX. I did try an Action Replay on the DS for Diamond and Pearl. It was fun, but yeah nothing caught using it could be used online or trade online. I even kinda broke the game in a way there was a bugged character model left in one of the towns xD.