N2O: Nitrous Oxide


(Last updated August 16, 1998)

  • Level select

    Enter Square, Circle, X, Triangle, Triangle, X, Circle, X as a password. Then, any level up to level 30 may be selected. Alternatively, enter Square, Triangle, Circle, Triangle, X, Triangle, Square, X as a password.

  • Bonus level select

    Enter Square, Square, Square, Triangle, Circle, Triangle, Square, Square as a password.

  • Weapons

    Enter Square, X, Circle, Square, X, Square, Circle, Square as a password.

  • Infinite lives

    Enter Circle, X, X, Triangle, Square, Triangle, Square, Circle as a password.

  • Hidden ship

    Enter X, X, X, Square, Triangle, Circle, X, Triangle as a password.

  • No bonus points reset

    Enter Square, Triangle, X, Triangle, Circle, Square, Triangle, X as a password.

  • Firewalls

    Enter X, X, Square, X, X, X, Triangle, Triangle as a password.

  • H²o mode

    Enter Circle, X, Square, Triangle, Triangle, Circle, Triangle, Circle as a password.

  • Disable cheats

    Enter Square, Square, X, Circle, Circle, Circle, Circle, Triangle as a password.

  • Level passwords

    Level
    		Password
    3
    		Circle, X, Circle, Circle, Square, Triangle, X, Triangle
    4
    		Circle, Circle, Triangle, Circle, Triangle, Circle, Square, Square
    5
    		Square, Triangle, Square, Triangle, Square, Triangle, Triangle, Circle
    6
    		Square, Square, Circle, Square, Triangle, X, Triangle, X
    7
    		X, Triangle, Circle, Square, X, Triangle, Circle, Triangle
    8
    		Square, Circle, Circle, Triangle, Triangle, Square, Triangle, Square
    9
    		Square, Circle, X, Triangle, Square, Square, X, Circle
    10
    		X, Triangle, Square, Circle, Triangle, X, X, X
    11
    		Circle, Square, Triangle, Square, Circle, Triangle, Square, Triangle
    12
    		Circle, X, X, X, Triangle, X, X, Square
    13
    		Square, Triangle, Triangle, Circle, Circle, X, Circle, Circle
    14
    		Square, Square, Triangle, Circle, Circle, Triangle, Circle, X
    15
    		Circle, Triangle, X, Square, Circle, Triangle, Triangle, Triangle
    16
    		Circle, Square, Triangle, X, Circle, Circle, Circle, Square
    17
    		X, Circle, Triangle, X, Square, Square, Square, Circle
    18
    		Circle, Triangle, Circle, Circle, Triangle, Square, Square, X
    19
    		Square, X, Circle, Square, Circle, X, X, Triangle
    20
    		Circle, Square, Triangle, Square, Square, Square, Square, Square
    21
    		Circle, Circle, Circle, Circle, Triangle, X, Triangle, Circle
    22
    		Circle, X, Circle, Triangle, X, Circle, Triangle, X
    23
    		Square, Square, Triangle, Circle, Triangle, X, Circle, Triangle
    24
    		Circle, Circle, Square, Triangle, Square, Triangle, Triangle, Square
    25
    		Circle, X, Triangle, X, Square, Triangle, X, Circle
    26
    		Square, Circle, Circle, Circle, X, Circle, X, X
    27
    		Square, Square, Triangle, Circle, X, X, Square, Triangle

    Game Shark Codes

    Infinite Lives P18011B354 0103
    Infinite Shields P18011B1FC 1117
    Infinite Special Weapon Ammo & Firewalls P18011B212 0A63
    Infinite Lives P28011B36C 0103
    Infinite Shields P28011B27C 0FFA
    Infinite Special Weapon Ammo & Firewalls P28011B293 0A63
    Driller Counter8011B488 0E60