Aliens (1986) - Based on the movie... and that's about it. Take control of 6 characters from the movie, move them around a massive colony base, blasting aliens. This game had many faults e.g. you ran out of ammo very quickly, and the only way to refill was in a room right near the start. Also, if you didn't clear the walls of bio-mechanical growth (with your gun, of course), it eventually causes all the lights to go out... totally. Despite that, still a very atmospheric and creepy game.