In each level the goal is to find the white sphere, and carry it to the upper
part of the screen. When the ball is captured it changes color and will try to
follow you.  This may seem easy at the begining, but the levels become more and
more complicated.  You must navigate past lasers, cannons, and watch your fuel. 
To learn how to play, just wait for some demos to appear.

redefinable keys:
up     - thrust
down   - retro thrust (if available)
left   - turn left
right  - turn right
space  - fire
return - use to capture the sphere

Alt-enter - toggle fullscreen
Alt-1, Alt-2, Alt-3, Alt-4 - scale window