Here is a concept model for a super sweet mobile game that is in development. It's poly count is 1,959 and there are no triangles. Pretty soon you'll be able to use that medieval weapon to tear down castles on your iPad.
This was the trebuchet I designed, but they ended up not liking it as much.
Fatso realized in three dimensions!
A Catapult in Living Color
The catapult is rigged for all mobile uses!