Choose a spaceship and sign on as your favorite crew member. Players then zoom around the orbital path from Earth toward Mars. Along the way, you'll repair malfunctions (breakdowns) by answering questions on science and technology. If all systems are "go" (your ship has no malfunctions), be the first to land on Mars to win. It won't be easy: Mars is a moving target, that is orbiting swiftly on its path!
This is essentially an educational answer-questions-about-space-and-science game, although it does include a half-dozen cool plastic spaceships and a big heavy Mars-marble!