Pause the game, hold L2 and enter one of these codes.
| Debug mode | Up, Circle, Right, Up, Left, Right, Down (Select) |
| Invulnerability | Down, Up, Left, Left, Triangle, Right, Down |
| One-liners | Down, Right, left, Circle, Up, Right (Select) |
| Debug mode | Square, Square, Diamond, Circle, X, X (Select) |
| Level select | Square, Circle, Circle, Triangle, X, X |
| One-liners | Square, Triangle, X Star, Square, X (Select) |
| 10 Lives | Square, X, Circle, Circle, triangle, Square |
| 1 Life | Triangle, Circle, Star, Square, Square, X |
| Alfred | Square, X, Triangle, Square, Star, Star |
| Rex | Square, Star, Star, Square, Triangle, Triangle |
| GEX Video 1 | Circle, Triangle, Square, Star, Diamond, Star |
| GEX Video 2 | Diamond, Star, Square, X, Triangle, Circle |
| GEX Video 3 | X, Diamond, Star, Triangle, Triangle, Circle |
| All GEX Videos | Star, X, X, Circle, Square, Triangle |
| Cuz | Square, Diamond, Square, Square, Triangle, Diamond |
| Eight Hit Paws | Square, Diamond, Triangle, Triangle, Star, Diamond |
| Invincibility | Square, Star, Triangle, Square, Triangle, Diamond |
horsehaggis on Jul 04