This is a great zombie edition of Contract Killer, just in time for Halloween. It's pretty cool with a all new zombie survival story where you have to protect people from zombies in different situations. The game is fun and the game play works good. My complaint about this game is the fact you get so little money from missions. This doesn't help you when you eventually need better and better weapons. There were you need to actually buy the addons for the game, or you can play forever trying to get the money needed in the game. But I guess that is why it's a free game. And this was a really fun game until I reached that point.