American Mcgee's Alice for PS3 - Free (DLC for Alice: Madness Returns)
I think this game has been free for a while, but as it's such a classic thought I should share it as a deal. Enjoy!
EDIT - thanks to people & mods for pointing out, this isn't the full game but is free DLC fir the game Alice: Madness Returns. That game is currently on sale for $5.95