My brother and I got a stupid amount of playtime out of that game's multiplayer. Hell, we even went so far as to raise a couple of bad-ass Chao who blazed trough everything the game threw at them - the only thing that could challenge them was each other. I remember mine looked like a dragon and his was kind of an angel dealie.
I enjoyed the Tails/Eggman stages, the Sonic stages gave a good sense of speed, and the Knuckles/Rouge stages were where I collected all the animals for my Chao so I can't complain about that.







