First thing: Thank you for credit!
Second thing: I will be blunt, you could've made the modifications a little better, as it is just a few ramps and some boxes mostly.
If you add more mods, and make them little more interesting, then it could be good!
Idea for plane: All you have to do is make a plane (as in a flat surface), make it invisible, then put the plane (flying thing) on top of it. It will pretty much look like its flying if you put some invisible wheels or something on it.
Thanks for using my chopper to test it, but why are some pieces missing? Rotors are gone... Anyway, it is good.
I find it a bit confusing, when I press the up key it just keeps going up and doesn't stop. I think if you release the up key, it should slow to a gentle hover.
No, sorry. Adjustable camera angle does not work. At all. Stick with being able to rotate it. When i try the move the 'camera angle', the pieces just split and spread everywhere. And I am using Algodoo.