Leave Cthulhu Alone is a Lovecraftian defense game. Turn intruders into monsters and use them to kill other intruders before they reach the necromancer. You can only mutate enemies when your power meter is full. The power meter will recharge over time, and refills faster when enemies are killed. There are four rooms in which your mutated victims can be placed. Move between the rooms with the arrow keys or by pressing the corresponding number keys.