10 Video Games That Punished "Cheesing"
5. Infecting Your Saves - Valkyrie Profile
You might want to sit down for this one, because it's more than a little bit brutal.
Often, using cheats in a game crashes the game - either immediately, or a little bit down the line when everything gets confused in the code. Either way, it's usually an innocent affair, that's just a matter of reloading the game before you get back into it.
Valkyrie Profile knows this is common. And it hates you. This second detail is very important.
If you try and use a cheat code in this game, it then infects your save file so the game will crash in battle. But it won't just corrupt the save you were using - it will corrupt any save it can find on the save card, ruining your entire game.
And even if you realised this and swapped memory cards over, if you haven't deleted all the save you had, it'll just keep going on.