Uuugh. My brother is the most annoying game-breaker on the freaking planet. I have all of the games for Gameboy (aside from DS games), N64 games, and Gamecube games. And.... My brother's broken the majority of them with various methods.
Pokemon Red, my first game, was played by me so much that it would save no longer. So.... I got another one. My brother got mad at me one day and smashed the second one with a hammer. And I want to play Red again, too. *mauled* Blue's survived, somehow.
Yellow was seconds away from going down the toilet. I pleaded and screamed that "that was the game that got me into the Guiness Book of World Records" for being the best selling game, and he gave me back the game.
Gold went in the dishwasher. Yes, the dishwasher. It works, but doesn't save.
[Edit- I tried it again today and it wouldn't turn on. Ugggh.]
Silver was in my Game Boy Colour when my brother threw it and my Marill plushie down in the parking lot of the airport. Marril's fine. XD The Game Boy itself now has no sound unless headphones are plugged in, and Silver won't save.
Crystal won't freaking turn on. I believe this is the one he stepped on....
The week I got my SP, both Ruby and the SP went in the washing machine. My brother put it in the pile of clothes that my mom swept in. She heard a "thunk" and dug through the washing machine to figure out what it was. I wasn't surprised, but was horrified. The first freaking week. x_x Ruby works and will save, but if not played for about a month, it will erase the save file for good. The SP is perfectly fine, and everything works.
Sapphire has been hidden numerous times, and was also in my brother's GBA when the battery acid leaked, but nothing happened to it. Thank god.
Emerald, Fire Red, and Leaf Green are all safe, despite getting lost a few times. Mystery Dungeon and Ranger are safe with me.
Now for N64. Stadium 1, Snap, and Puzzle League are safe. Stadium 2 was jammed in by my brother so that the metal on the bottom broke, but oddly enough, it works, though it might catch on fire one day. The Gameshark was jammed and thrown around, and is now completely broken, but I don't mind that one too much. Hey You, Pikachu itself works fine, but my brother just had to ruin something else, so he fed Pikachu an blue ice pop, staining half of the microphone "puff" green.
For Gamecube, everything works. Super Smash Brothers got horrificly scratched, but that doesn't really count. My friend gave me hers. The Action Replay was mutilated; face down on the tile and rubbed on unsanded wood. It's obvious what happened there. I laughed, actually.
My numerous DVDs, VHS, and CDs are all fine. Stay safe, Wii and DS Lite.
....*ahem* Long post that nobody actually read. So, how have your games been broken?