148 Games and (also dlcs for a number of them), Which include:
1000 amps
140
the 39 steps
AaaaaAAaaaAAAAaaAAAAaAAAAA!!! for the awesome +dlc
Ace of Spades
Amnesia:the dark descent
And Yet It Moves
Antichamber
Audiosurf
Bastion
Beat Hazard
The Biding of Isaac + Wrath of The lamb dlc...