alright in response to my last comment, this physics glitch is too prevalent, i played the last level and every time my tanks got to the final enemy base, the base cannon pushed them off of the base and flipped them over.
alright i just got a flying dragon glitch...it pretty much appeared...shot me and then i shot it down but for some reason kept shooting me even tho it was down. like its body would go down and bleed, then suddenly appear in they sky again and shoot me, go down and bleed, appear above shoot, go down etc.
There are three. :D