This is an interesting concept. It uses actual orbital pathing, it looks like, which makes it very challenging. I managed to get two levels in but it was a struggle. I think people who enjoy kerbels would love this. Also when you loose the level you get a restart, but when you complete the level and go to the portal there isn't anything telling you to push a button to move on. Maybe have it move on automatically, or have a "space" button at the bottom so the player knows. I do like the graphics, it's quite beautiful in it's simplicity. And the music was fitting.