I could have sworn I was something about a Windows release of Sonic Adventure 2 (specifically Sonic Adventure 2 Battle), but I can find no evidence of it anywhere. Sega has generally been oddly enthusiastic about porting stuff to Windows over the years, and way back in the day there was a PC version of Sonic Adventure DX and even Sonic Heroes. (I have to wonder why the latter hasn't shown up on Steam or XBLA or whatever yet; I'm sure someone would buy it.)

So was there a PC version of Sonic Adventure 2 Battle? Or is my memory playing tricks on me?