Zombie Frontier 3 is an FPS where you play a zombie apocalypse survivor. Your objective is to try to rescue as many survivors as you can, while also killing all the zombies you come across.
Your character always moves automatically, so all you have to do is slide your finger around the left side of the screen to aim your weapon. On the right side of the screen, you have the buttons to shoot, use the sight on your weapon, and reload. You can also use hand grenades and adrenaline shots (from time to time).