Dead City for Chrome
More About Dead City
This game works like that: the zombies are attacking you in waves. You need to shoot them to kill. Some of the zombies are tougher - those can be killed only with two rounds. But if you point to the head, the tougher zombies will get killed by one shot.
Stay away from the monsters, the wild dogs and other beasts. You must charge your gun with new rounds, so be quick to do so before the zombies will get you!