It's boring, too many blocks! You should make few indestructable blocks and some enemies that just drive around and destroy the car (or whatever) so it would be great challange.
Well it WAS air friction motor. When you add it into something and drag it sideways, it stabilizes it. It's not sideways when you start scene, so you need to drag it yourself.
It sure is great, but you should make something that it destroys. Another thing is it's weakness. You can't put it into a plane or something becouse it blows up so easily, try to fix that.
Cool!
You really should improve this! Try to make those figthers look better and be more breakable. You should improve their weapons, too. Try to add some kinda shield and more affects on swords (pens are great option becouse it makes them look that they swing fast).
This looks much better than your buggy, but buggy hill climp was harder, becouse buggy did break more easily. Try to make the track longer, it would be much better.
Kilinich, left is right becouse left key actives left engine. Main engine is for floating, not going up. Main engine is main becouse it should be on always. Up engine is poferful becouse it's for going up, and blue balls are "gas" (lighter than air) so if you spawn them they fill the balloon so it works like hot-air balloon.