Game gear: Sonic 2
Mega Drive: Sonic 3 & knuckles
Mega CD: Sonic CD
Saturn: Nights
Playstation: Xenogears
Dreamcast: Sonic adventure 2
Playstation 2: Legacy of kain: Soul reaver 2
Gamecube: Tales of symphonia
Xbox: Star Wars: Knights of the old republic
Xbox 360: Mass effect 2-3 (so far)
Nintendo DS: Kingdom hearts 358/2 days
Nintendo 3DS: Resident Evil revelations (so far)
Playstation Portable: Kingdom Hearts Birth by sleep (so far. I got it recently)