Super Mario Bros. Cheat Codes

10 cheat codes for Super Mario Bros. on NES.

Double Mario (Misc)

Mario appears doubled; all enemies are half of Bowser.

ZGGAEP

Enter the code into your Game Genie device and connect it to your NES.

Walk Through Enemies (Misc)

Mario can walk through enemies without taking damage.

GTTTTL

Enter the code into your Game Genie device and connect it to your NES.

Walk Through Walls (Misc)

Mario can walk through pipes, blocks, and walls.

GIIIVY

Enter the code into your Game Genie device and connect it to your NES.

Start with 1 Life (Extra Lives)

Players 1 and 2 start the game with 1 life.

AATOZA

Enter the code into your Game Genie device and connect it to your NES.

Start with 6 Lives (Extra Lives)

Players 1 and 2 start the game with 6 lives.

IATOZA

Enter the code into your Game Genie device and connect it to your NES.

Start with 9 Lives (Extra Lives)

Players 1 and 2 start the game with 9 lives.

AATOZE

Enter the code into your Game Genie device and connect it to your NES.

More Enemies (Misc)

Spawns more enemies throughout the levels.

ZIGGYY

Enter the code into your Game Genie device and connect it to your NES.

More Koopas (Misc)

Spawns more Koopa Troopas.

NAPKIN

Enter the code into your Game Genie device and connect it to your NES.

Super Jump (Misc)

Mario can jump significantly higher; also affects graphics.

SIKAEP

Enter the code into your Game Genie device and connect it to your NES.

Invincible Enemies (Misc)

Enemies do not die when hit or stomped.

KAAEPO

Enter the code into your Game Genie device and connect it to your NES.