The orbits above were generated with OG8

This algorithm allows the user to
explore multiple-orbit systems that even the
progammer may never have seen before.

Download:
orbit-game-8.exe 188 kb
Tested on Win7, Win10 & Win XP

If your PC is set to use the comma as a decimal separator,
then these apps won't work so good.
Hello America!
The metric system is quite a good idea!
.

The orbits above were generated with OG6.

This algorithm proves that the Solar System
formed when the Sun's twin went nova.

Download:
orbit-game-6.exe 276 kb
Tested on Win7, Win10 & Win XP