Moonsweeper is set in space, where your goal is to rescue miners from the moons in Star Quadrant Jupiter. You must avoid deadly aurora flares, photon torches, and space bullets from the sun in this quadrant. As you navigate through the space, you will see a moon pass by, and by flying near it, you can descend to the surface.
On the surface of each moon, you will see stranded miners that need to be rescued by flying over them. You'll also encounter various obstacles like towers, lunar satellites, alien surface destroyers, and others that must be avoided or destroyed. If you successfully rescue six miners (the maximum your ship can carry), you may take off from the surface using the accelerator rings.
The game features several different types of moons with varying levels of difficulty. To help you out, your ship is equipped with photon torpedoes and shields. However, be aware that using the shield will cost you points.