I think I should probably point out that trainers are actually much less likely to break your save file then save game editors... And neither of them modify the game itself at all. Save game editors directly modify the game's save file, which of course can break it if you don't know what you're doing. Trainers on the other hand do not modify any files. They modify the game's memory. So if you mess a game up using a trainer all you have to do is restart the game (maybe without saving if you messed something up in the save information) and the game will return to the way it was before using the trainer.
I do want to make it clear that modifying the game in either way can mess things up if you don't know what you're doing. But neither of them will break the game files.
Last edited by Xephael; 19/01/16 07:32 PM. Reason: Removed quote because BBcode is broken