Pulsar is a 1981 arcade game created by Sega/Gremlin. In it, the player controls a tank in a top-down view maze to fetch keys used to unlock the next level. Pulsar runs on the Z80 microprocessor. The game was designed and programmed by Larry Clague and Mike Hendricks. Released Dec, 1980 Platform Arcade Developed by Sega/Gremlin Published by Sega/Gremlin Interface Direct control Setting Sci-fi / futuristic Visual Fixed / flip-screen Gameplay Arcade, Shooter Perspective Top-down Genre Action Description In Pulsar, you control a tank in a constantly shifting maze. Your goal is to collect colored keys to open locks that give you access to new areas of the maze, while avoiding enemy aggressors and not running out of fuel. In each level of the game, you start in the bottom left of the maze. The door, allowing egress from the level, is on the bottom right along with a set of colored and numbered locks. The keys to these locks can be found along the top wall of the maze. Only one key can be transported at a time, and while it is being carried, the tank changes color to match that key. Gameplay then involves navigating the maze, collecting the keys, activating the locks, and moving to the next area. Bonus points are doubled at the completion of a level if the locks are deactivated in numerical order. Of course there are added difficulties. For a start, the walls randomly move so that you may need to choose a different path to reach a key. If you hesitate, randomly appearing force-fields can destroy stationary tanks. You also have a limited amount of fuel, which depletes at a slow but relentless rate. There are also several types of alien aggressors with different movement patterns, which can shoot you or collide with you if you are too careless. Amongst the aggressors is the large, slow and erratically moving "pulsar" which takes many shots to destroy, after which it splits into six smaller aggressors. Shooting any of these alien craft will replenish some of your fuel....