Just downloaded Sonic the Fighters on XBL. Been playing online and having a blast! Sure it's a simplistic dumb little button masher, but it's awesome to have little pastel cartoon characters beating the shit out of eachother.
Wow that I did not know. Seems you can only play her in 1p mode if you hit start when you select Amy. Nothing really special about the character though. Just a Knuckles clone. As for PSN I dunno since I don't got a PS3.
Yeah, this was recently added to the Playstation Network too. I was surprised to see it be put up. I should give it another shot. I remember not liking it when I played it through Sonic Gems Collection though so I won't be buying it.
It has a bit of a cult following. It's no Fighting Vipers or Last Bronx, but I personally think it's a fun, if shallow and button mashey, game.