Zombie Frenzy

2 years ago, a virus started to spread all around the world. 90% of the world population infected, and turned into zombies. Some of the survivors created an alliance againts zombies. Their purpose is to clear our infected world. You are one of the survivors, and devoted yourself to clear zombie town. Join the alliance, get better weapons, and kill more zombies. Your task is to clean every town. Kill as much as zombie you can to save the world.