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The Flintstones: King Rock Treasure Island has two secret cheat codes:
•Press Down, Down, Down, Down, Up, Up, Up, Up to invert the colors of the screen.
•Press Select, B, A, A, B, Select, B, A, Start to play a minigame similar to Helmet where Fred must avoid falling rocks and get to his house.
•Press Down, Down, Down, Down, Up, Up, Up, Up to invert the colors of the screen.
•Press Select, B, A, A, B, Select, B, A, Start to play a minigame similar to Helmet where Fred must avoid falling rocks and get to his house.
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