It came from space, and ate our brains!

It came from space, and ate our brains! is a twin stick shooter where a blocky character needs to survive in a small environment, fighting off many waves of aliens. The character can freely move in a dark environment and can shoot in any direction. Aliens spawn in many locations of the map at once. A small part of their body is bright and emits some light, but everything else dissolves into the darkness. The character holds a flashlights that shines automatically in the viewing direction. To keep track of aliens appearing from all sides, constant movement and turning is required.

The starting weapon is a pistol. By killing aliens, and many in succession for multipliers, a score is earned. There is a police car on the map with a flashing blue light. By approaching the back of the car it is possible to trade in the points for different kinds of weapons and upgrades. Next to the basic pistol a shotgun, a machine gun and a rocket launcher can be bought, all with unlimited ammo. Upgrades include a temporary speed boost or additional health. The game does not pause however when entering the upgrade screen, so it is possible many aliens will be nearby when returning. After completing a certain amount of waves the character is taken to a new map. The character only has a single life.