Nice orbital simulator, optimized code pipeline, many planet sprites, ability to zoom in/out and to create complex universes. As far as i know the limit is your immagination or your spare time :)
Not so well commented.
Requires fast GDI video driver (lots of PaintPicture scales). Look for Matrox G series or newest cards. BEWARE of S3 Savage's :)
Please VOTE, VOTE and VOTE again! :)
And REPORT bugs i'm sure there are some.
i have found some versions crashing if user zoomed out too much...