Mistershine on 14 April 2008
Aegis Wing
Yaris
Undertow
Carcassone
Hexic
Joust
Totum Ball
I don't know if you count it but I got XBLA unplugged free with PGR3 and it includes:
Geometry Wars
Texas Hold'em
Outpost Kaloki X
Wik: Fable of Souls
Bejeweled 2 Deluxe
Hardwood Backgammon
Total: 13
Paid:
Pacman CE
E4
Alien Hominid
Puzzle Fighter HD
Total: 4
