Furd Herder mini-game
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Enter Green Alien, Green Alien, Square, Green Alien as a
password to unlock a Minesweeper-like mini-game.
Snake mini-game
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Enter Circle, Diamond, Square, Green Alien as a password.
View Klax history
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Enter Yellow Alien, Pillar, Pillar, Green Alien as a password.
View Klax myth
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Enter Square, Pillar, Diamond, Green Alien as a password.
View programmers
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Enter Green Alien, Green Alien, Circle, Square as a password.
Note: A Game Boy Printer is needed for this trick.
View credits
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Enter Pillar, Yellow Alien, Diamond, Diamond as a password.
Adventure mode (European version)
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Enter Square, Yellow Alien, Green Alien,
Yellow Alien as a password.
Level Password
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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
