Moonbound is a challenging 2D arcade action game that forces the player to make quick decisions under pressure. The player controls an astronaut who is returning to Earth after completing a geological survey mission in the Beta Iridian solar system. The astronaut's ship is suddenly damaged by an explosion! The energy crystals that are used as the ship's main power source are ejected out of the ship and land on six different moons. The player must return all of the remaining crystals to the ship to be able to return to Earth.