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Time for some old-school cheat code input!

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Sonic the Hedgehog 3/Hidden content - Sonic Retro

Sonic Origins Cheat Codes: How to Enable Sound Test on All Games

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Sonic Origins: Cheat Codes

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Sonic Origins Plus cheat codes: find Hidden Palace Zone and get Super Sonic - Video Games on Sports Illustrated

Game Design

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Sonic the Hedgehog 3/Hidden content - Sonic Retro

Every Cheat Code in Sonic Origins