Use your mouse to play. When mouse cliked, your rocket will orbit around the nearest planet (or sometimes around another one or nothing :v). Your misson is stay away from planets and asteroids by orbiting around planets. In the top and bottom of the layout are nebulas, maybe there are some planets asteroid there too, be careful. You can also get outside of the layout but only when your mouse button is down, if it isn't, you will die. The farther you go, the higher score you get.