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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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