A secret experiment is going on in the lab where a monster will be wakened. Human beings are trying to stop it. Your mission is to kill all invaders. Use arrow keys to move the magic blanket. There are four rooms in all, and press 1234 to enter different rooms. When your power meter is full, mutate your enemies and attack them with space bar. Press R to restart the level. Leave Cthulhu Alone is a puzzle game from www.flash-game.net.