A square is a very weak shape, especially when there are no diagonal reinforcements. Notice how the shape can fold very easily over itself? Adding an "X" to a square can make it stronger.
I think the idea was to be able to see what the air does... besides, the embedded air resistance isn't very realistic at all... generating any amount of lift by a moving wing is very, very hard.
Glad you fixed it. I noticed 2 other things after this comment, though, that the marbles have tracers which are barely visible and only serve to slow down already slow computers. Also, it appeared that when the dark boxes were all gone, the circles of said boxes color did not disappear. It appears like nothing can kill circles, meaning it will be an eternal tie. Those aside, I love this scene!
Hi, GunFun655. You made a comment on a scene of mine with a waypoint drone. here it is, if you forgot about it.
http://www.algodoo.com/algobox/details.php?id=242248
Anyway, I'd like to know what it was that was that you didn't like about the scene, so I could try improving it. Thanks from Arizona!