Play Game Genie Bios (unl) Online
Input codes to modify SNES games and unlock cheats for new gameplay.

🎮 Game Controls
Make sure the game window is active to play.
- Move
- Btn A
- Btn B
- Btn X
- Btn Y
- / L / R
- Start
- Select
About Game Genie Bios (unl)
Game Genie BIOS (Unl) was released for the Super Nintendo Entertainment System in 1990 by Codemasters. It is not a traditional game, but a utility cartridge that allows players to modify their SNES gaming experience. During that period, it was one of the few official third party products that directly altered game code, letting you change how your existing games played.
You don't control a character; instead, you interact with a menu system to input codes. The main objective is to apply these codes to other SNES games, granting advantages like infinite lives, permanent power ups, or level skipping. Its signature mechanics involve entering specific alphanumeric sequences, testing the codes in your game, and saving successful combinations for later use. The process requires patience and sometimes trial and error to find codes that work without causing glitches. Using it feels like having a hidden set of tools that can completely reshape a familiar game.
Must-play games
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Jump, punch, and use weapons to knock opponents off platforms in chaotic multiplayer battles. -
Jump, crush enemies, and collect coins to reach the exit in this platformer. -
Click items, combine them for pranks, and avoid the teacher in class. -
Fight as Nintendo characters and knock opponents off the stage in multiplayer battles. -
Jump and stomp through levels to rescue a celebrity and collect baby chicks.





Sonic
Pac-man
Pokemon
Ninja Turtles
Star Wars
Angry Birds