N2O: Nitrous Oxide Cheats, Codes, Cheat Codes for PlayStation (PSX)

N2O: Nitrous Oxide 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

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Game Shark Codes

Infinite Lives P1	8011B354 0103
Infinite Shields P1	8011B1FC 1117
Infinite Special Weapon Ammo & Firewalls P1	8011B212 0A63
Infinite Lives P2	8011B36C 0103
Infinite Shields P2	8011B27C 0FFA
Infinite Special Weapon Ammo & Firewalls P2	8011B293 0A63
Driller Counter	8011B488 0E60

The image featured at the top of this post is ©The Legend of Heroes: Trails of Cold Steel III key art / Original