Mega Man 3 - One At A Time Game Genie Codes (USA)

This page contains the Game Genie codes I have for Mega Man 3 (USA), a game for the original NES (Nintendo Entertainment System). If you're playing with an emulator you'll typically be able to put these codes into the program directly through a built in option. Any of you who are old school and playing on a physical console, you'll have to purchase a physical Game Genie cheat device to use these codes.

If you don't see the code you want on this page, I recommend you return to my Mega Man 3 Guides Index and choose a different section.

Note: You can only use one of these codes at a time if you're using a real NES. Emulator players can use the Infinite Lives and Infinite Energy Tanks together with any other code by pausing the game while playing and turning each code on one at a time then back off. Leave whatever Infinite Ammo for Special Weapon code you want on. With this you'll get 256 Lives and 256 Energy Tanks plus whatever other code you pick.

Note #2: You can also get all special weapons by pausing the game while playing and turning each special weapon code on then back off. You won't get infinite ammo for them like the code says but it'll grant you the weapon.

 

Infinite Energy (Invincibility): XXVKGAEP

Infinite Lives!: VXVKGAEO

No enemies: VOVKGAEO
Bosses won't spawn either, so you can't finish a level

Start With Infinite "Gemini Laser": UXVKGAEP

Start With Infinite "Hard Knuckle": SXVKGAEP

Start With Infinite "Magnet Missile": VXVKGAEP

Start With Infinite "Needle Cannon": KXVKGAEP

Start With Infinite "Rush Marine": UXVKGAEO

Start With Infinite "Shadow Blade": KXVKGAEO

Start With Infinite "Snake Search": EXVKGAEO

Start With Infinite "Spark Shock": XXVKGAEO

Start With Infinite "Top Spin": NXVKGAEP

Start With Infinite E-Tanks: NXVKGAEO