Pulsar is a maze shooter arcade video game created by Sega/Gremlin and released in 1981.

[1] The player controls a tank in a top-down view maze to fetch keys used to unlock the next level.

The structure of the maze is constantly changing, as well as force fields appearing and disappearing at regular intervals.

There are three kinds of enemies that move in their own unique ways, shooting at the tank when it is in a direct line (horizontal or vertical).

The fourth enemy is the titular Pulsar, a big red entity that adds a heartbeat sound to the stage music.