You awaken in an Alien Laboratory. They have been using humans for biological experiments. Unfortunately for them, this time the experiment worked! Membrane is a Retro First-Person-Shooter in the vein of 90's shooters that popularized the genre. It follows a protagonist who has been surgically attached to an alien organism, the Membrane. Over the course of the game, the player will discover weapons and “mutations” which gives them powers to progress around new obstacles.