Furd Herder mini-game
Enter Green Alien, Green Alien, Square, Green Alien as a password to unlock a Minesweeper-like mini-game.
Snake mini-game
Enter Circle, Diamond, Square, Green Alien as a password.
View Klax history
Enter Yellow Alien, Pillar, Pillar, Green Alien as a password.
View Klax myth
Enter Square, Pillar, Diamond, Green Alien as a password.
View programmers
Enter Green Alien, Green Alien, Circle, Square as a password.
View credits
Enter Pillar, Yellow Alien, Diamond, Diamond as a password.
Adventure mode (European version)
Enter Square, Yellow Alien, Green Alien, Yellow Alien as a password.
Level passwords
| Level | Password | | 1 | Yellow Alien, Pillar, Pillar, Circle | | 6 | Circle, Yellow Alien, Square, Yellow Alien | | 11 | Yellow Alien, Yellow Alien, Square, Green Alien | | 16 | Diamond, Yellow Alien, Green Alien, Diamond | | 21 | Diamond, Square, Diamond, Green Alien | | 26 | Pillar, Yellow Alien, Square, Pillar | | 31 | Green Alien, Circle, Pillar, Pillar | | 36 | Circle, Circle, Yellow Alien, Yellow Alien | | 41 | Pillar, Diamond, Diamond, Circle | | 46 | Yellow Alien, Diamond, Circle, Pillar | | 51 | Square, Diamond, Yellow Alien, Square | | 56 | Pillar, Square, Square, Yellow Alien | | 61 | Circle, Square, Circle, Green Alien | | 66 | Circle, Diamond, Diamond, Green Alien | | 71 | Circle, Square, Square, Pillar | | 76 | Green Alien, Green Alien, Yellow Alien, Circle | | 81 | Pillar, Circle, Circle, Pillar | | 86 | Square, Green Alien, Diamond, Circle | | 91 | Yellow Alien, Green Alien, Circle, Diamond | | 96 | Pillar, Pillar, Green Alien, Square |
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