N2O: Nitrous Oxide

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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

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