SPOILER WARNING!
In these pages, button-pushing sequences and passwords will always be listed first. Further down the pages will be the tips & tricks, which might ruin your fun if you're trying to beat a game on your own. The start of the "spoilers" will be denoted by a blue horizontal line. If one of the following pages has only "Tips & tricks" in yellow under the game title, then the entire page is tips & tricks. You have been warned, now on with the codes!

entries added on 01/11/2007: YIDS (all)
entries added on 07/04/2006: NSMB (1)
entries added on 06/12/2006: MKDS (all)

Game Genie codes

• All Night Nippon Super Mario Bros.
• Donkey Kong (Arcade)
• Dr. Mario (NES)
• Dr. Mario 64
• Game & Watch Gallery
• Game & Watch Gallery 2
• Game & Watch Gallery 3
• Game & Watch Gallery 4
• Luigi's Mansion
• Mario & Luigi: Superstar Saga
• Mario Golf (N64)
• Mario Golf: Toadstool Tour
• Mario is Missing (SNES)
• Mario Kart 64
• Mario Kart DS
• Mario Kart Wii
• Mario Kart: Double Dash!!
• Mario Kart: Super Circuit
• Mario Paint
• Mario Party 2
• Mario Party 4
• Mario Tennis (GBC)
• Mario Tennis (N64)
• Mario's Picross
• Mario's Super Picross
• Mario's Time Machine (NES)
• Mario's Time Machine (SNES)
• Mario vs. Donkey Kong
• New Super Mario Bros.
• Paper Mario
• Paper Mario: The Thousand-Year Door
• Picross 2
• Super Mario 64
• Super Mario Advance
• Super Mario All-Stars
• Super Mario Bros.
• Super Mario Bros. 2
• Super Mario Bros. 2 (Japan)
• Super Mario Bros. 3
• Super Mario Bros. Deluxe
• Super Mario Kart
• Super Mario Land
• Super Mario Land 2: 6 Golden Coins
• Super Mario RPG: Legend of the Seven Stars
• Super Mario Sunshine
• Super Mario World
• Super Mario World 2: Yoshi's Island
• Super Princess Peach
• Super Smash Bros.
• Super Smash Bros. Melee
• Tetris & Dr. Mario
• Tetris Attack (GB)
• Tetris Attack (SNES)
• Wario Blast: Featuring Bomberman!
• Wario Land: Super Mario Land 3
• Wario Land 4
• Wario Ware, Inc.: Mega Microgame$
• Wario's Woods (SNES)
• Yoshi's Cookie (GB)
• Yoshi's Cookie (NES)
• Yoshi's Cookie (SNES)
• Yoshi's Island DS
• Yoshi's Island: Super Mario Advance 3
• Yoshi's Safari
• Yoshi's Story

For cheats / codes / passwords / tips and tricks for other Nintendo games, I suggest David Dayton's Nintendo Code Book.