Tap on the screen to shoot your sub-machine gun at the zombies. Navigate your character around the island by dragging the screen to escape zombie attacks. Restock your weapon by pressing the reload button when your ammo is low. Endure each wave of zombies by eliminating all enemies before they overrun you. Gather power-ups and ammo drops to improve your firepower and survivability. Advance through increasingly difficult waves by thinking ahead and managing your resources. Access new weapons and upgrades by achieving levels and scoring points.