If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
Welcome to the second Mars adventure of the Curiosity rover. This time you'll have to race other spaceships from Mars like the star troopers, star warriors, galactic battlestars and stargazers. So race yourself to victory and become the number 1 spaceship on Mars. But be careful, don't drive too hard as this will make the rover less accurate in its stearing.
Use the arrow keys to control the curiosity rover. Shoot the other spaceships with the ctrl button. Press space for braking. Collect silver diamonds for a 3 second shield protection and gold diamonds for an instant reload of your laser shooting capacity.