Normally $35, now $20. World War Z. A great zombie shooter with a few twists. Each level has some challenges or problems to solve like: collect these 5 boxes and bring them back, or open these 5 valves to get out. The end of each level is like tower-defense where you have 4min to set up your defenses (turret guns, barb wire, fences, barricade,etc) before a wave of zombies hits you. Good storyline. Different classes and weopons. Very replayable and you can play a quick game and get out. Online or offline with bots; coop play online.
Ended up buying using PayPal since my credit card did not seem to work. Posibly down for some reason.