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I'm just gonna jump right in here and get a conversation started. So, what are all you peoples favourite Sonic game or games if you have more than one favourite? I'd say mine are: Sonic 2, Sonic 3, Sonic Adventure DX (yes, I mean the Gamecube version) and Sonic Adventure 2 Battle (again, yes, I mean the Gamecube version).
3D: Probably Sonic R. 2D: Sonic 3 & Knuckles I think... out of those two combined cartridge games though, I'd pick Sonic & Knuckles.
I answer with a direct opinion Sonic Adventure 2, Sonic Unleased(PS3), Sonic Generations and the classics: Sonic The Hedgehog 1&2 Luck