Woah woah woah woah! Back up, back up! Sonic the Hedgehog on a mainstream rival console then eh? Never thought you'd see this huh? Well, believe it, Sonic Team has fully committed to GameCube and GameCube only, even if the rest of Sega can't figure out the obvious platform yet. This is basically a souped up version of Sonic Adventure 2 on the Dreamcast, albeit with enhanced graphics, and more levels and characters promised for play in the multi-player modes. Hence, 'Battle'. This interlocks with Sonic Advance on the Game Boy Advance, to bring the best possible features to life, namely the Chao Garden features.