Ah, the Game Genie—not a game itself, but every Sega Genesis kid’s secret weapon back in the day. You’d plug this little cartridge in before your actual game, then punch in these weird letter codes from the included booklet (or from friends at school who swore they had the "unlimited lives" one for Sonic). Half the time, the codes did wild, unexpected stuff—like turning characters into glitchy messes or giving you powers the game wasn’t even designed for. Codemasters basically handed us a way to break our favorite games, and honestly? It was glorious. Just don’t blow into the cartridge too hard, or you’ll lose your cheat progress.