Eliminate the invading force intent on taking Space Station Xorbe in Earth's orbit. If the station is captured then it will become a staging ground for the invasion of Earth itself. You have a huge arsenal of weapons and defensive mechanisms at your disposal - use them wisely and you may prevail.

Launch your ship to the goal by using the gravitational pull of planets, collecting power-ups and avoiding obstacles along the way.

Orbit green objects and collect yellow ones to increase score and time.