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Players can unlock 12 classic Sega Game Gear titles, such as Sonic Chaos and Sonic Drift .

An overhauled Chao-raising system that allowed for portability with the Game Boy Advance via the Nintendo GameCube Game Boy Advance Cable. The Story and Characters sonic-adventure-dx

Higher-polygon character models for the main cast (except Gamma) and updated lighting. Players can unlock 12 classic Sega Game Gear