Planetoids is a single-player action shooter game in which players control a spaceship to shoot asteroids and alien ships while avoiding collisions and enemy fire. In this game, set in space, players must navigate through a field of passing planetoids, dodging and destroying them to survive, with the added threat of fast-moving alien ships that attack with cluster bombs. It stands out with its emphasis on staying calm and precise, requiring players to use thrust, turning, and hyperspace maneuvers strategically to survive the onslaught of space debris and enemies, offering a challenging and fast-paced gameplay experience.