50% Off Lollipop Chainsaw ($19.99)

Retailer: Gamestop

Platforms: Xbox 360 / PlayStation 3

Link: http://bit.ly/vZhFzP 

Zombies, chainsaws, and sexy school girls. What's not to like about Lollipop Chainsaw? Whether you're in the mood for something a little Halloween themed, or you're just a pervert, the game's available for half-price new at Gamestop this week.