Damn dude, that game is tough xD I've never been good at space mechanics lol. Got to about level 3 then I just couldn't do it, too many planets to swing between for me! Impressive that you wrote this from scratch in C++, the filesize shows it too, it's great what you've got in to a small exe. With some polish and some sound/music, this could be a great little game, I hope you continue it :)