Galaxial is a real time 4X (explore, expand, exploit and exterminate) strategy game set in space. The player is given control of their own empire in the distant future, and are free to play the way they like using diplomatic, economic or military means of achieving their goals in a sandbox galaxy.
Screenshot taken when stress testing the galaxy generator with 2,000 planets!
I haven't decided on the maximum size allowed yet, but would imagine 1,000+ planets may not be suitable for game play and performance reasons. They look great though.
You can view some full size (4096x4096) versions here:
(Warning: large 4MB images)