Phantasy Star Universe
Guilty Gear (series)
Phantasy Star Online Episode III
Sonic Adventure (series)
Street Fighter Alpha 3 (with online support via GGPO)
Contenders with great potential
King of Fighters XIII – If this game comes to steam I’m buying it on release date. I’m really liking this game at the moment. If it does come to PC (with online play of course) it will instantly replace SFA3 (#5) on my list. Oh, for those of you that don’t know, rumor has it KOF13 is coming to PC via steam! I hope it does so much I can hardly stand it. Please steam, PLEASE pick this game up.