pretty good
mouse based control makes this very smooth and intuitive to control, I have to say though, the planets, although the graphics are clean simple and nice, would be better off not being hollow rings, in the instructions is tells you to avoid planets but then you see rings and you thing, maybe I should collect these, not knowing that they are the planets. Now obviously it's easy once you know, but I just don't think those rings are the right graphic to use here.