This is a great game, and a good use Unity in general! The only problem I have is that the offsets of GUI features, such as the play button after dying and the mini map , make it so the GUI elements are mostly off screen. Also, a possible fullscreen feature in the menu would be great, as it would be so much more immersive and intense when you run into a ghost. (Screen.fullScreen = true) Anyways, I'm excited to see where this goes, especially as a fellow Unity developer!
Why can't it be an imperial sim with awesome physics? ;P I'm at work right now, but I've been outlining a black hole creation event when the mass/scale^2 ratio is too large. I'll hopefully be able to add it when I get home :)
Some new ideas: More star/planet types, more asteroid variation, a mass modifying ray, an object resizer, a link tool, an orbit tool, and more complex life. I'll also be adding some story, hopefully soon.
Meant to reply to Milford's Feb 19th comment. Stupid iPod lol