W and S to acelerate and decelerate. Use Q and A to acelerate and decelerate evern faster. Can change center pull by crashing planet into other planet. Velocity is the speed your going at. (note about velocity, its not very accurate.)
Made this game after I was playing with movement scripts and made an orbit, which gave me the idea to remake the other planet sim I made. Still need to work on graphics May update in the future.