Algodoo

No thrusters! Just press the up key and watch the machine fly like magic, without any visible means of support, flapping, lift or thrust! Everything is as you see it, ABSOLUTELY NOTHING is invisible! (Not any thing that I made in this, atleast.) No scripting, except for InertiaMultiplier to make it stable. You can use the down and up arrow keys to control it, if you can learn how to. (if you do, please tell me!)