About Police vs Zombies

Police VS Zombies is a defense shot game. Players could unlock 8 forces in the game, including basic gun militants and defensive shield militants in the early stage and shotgun militants, missile militants and electromagnetic militants with high attack in the late stage.
There are many zombies with different specialties, like explosive bomb zombie, zombies with high strength that could crack the ground, fireman zombies that immune freeze and astronaut zombies from the Mars. What's more, you could challenge different dungeons!
You are a chief of a group of well-equipped soldiers who will defend the safety of human on your command.