Blow apart big waves of zombies using an array of guns and hired buddies to fight by your side. Purchase bigger and better guns and hire assistance with big firepower to give those hoards of zombies a good spanking, keeping them away of your territory.
You are a brave caveman who lives alone in the mountain with active volcano on the island. Deflect stones spewing off from the volcanic eruption with your stick or they will eventually destroy your island.
