A couple of days ago another title was added to Xbox 360 Live Arcade. It's another nostalgic one, orginally released in 1986 called Crystal Quest. I've given it a blast and its pretty much what you expect of an old school game revamped, gameplay is still there and looks pretty nice. Unfortunatly the demos rather short and doesnt get remotely hard near the end. As a bonus you do get to play the original game as well, complete with classic graphics. The free trial game weights in at 24MB.