I think the visuals, as everyone's mentioned, are definitely this games strong point. I was confused a little when playing, I read the description but didn't really understand what I was doing, I found myself aimlessly clicking at circles around the planet. I definitely think that there should be a more explicit goal -- discovering all the planets before a timer goes out, a limited fuel, optimal paths to explore every planet etc. just some ideas. Aside from that, it feels like a really polished game.