You are the ultimate prototype resulting from an experiment created to take out the aliens by infiltrating their base. Select from 2 characters and enter the enemy base to destroy the aliens. The platform is filled with traps and spikes that you will have to avoid. Use your WASD keys to move around and the space key to shoot your machine gun. If you get hit by the enemy fire or the enemy itself, you will loose health. Your health bar is shown to the top of the screen. Find your way around by exploring the base and destroy all the hostiles to complete the challenge. Exterminator is one of our many Action Games that we publish on TheGamerStop.com. This game is also tagged as a Shooter game. Click the play button to start having fun. To play even more free games, view our popular and new games page. If you want to play more games like this, then you can simply check out the games inside the game tags that are the most relevant to your interests or the Action Games category or the games like this game page at the end of the game tags.