You sure made a really fun game! First of all, I really love the background, it's simple yet is really cool looking. The movement really fits the game and hitting asteroids really has an effect with the game slowing down. The asteroid monsters with the tentacles and the eye really suprised me and they are the highlight of this game for me. I too have made games that teleport you on the other side when you get out of bounds, but I don't think it really fits the theme. Some audio for movement would have been nice too and the go to main menu button at the end didn't work for me. All in all, it is a really fun game, though it doesn't really fit the theme.