Game Jam Argentina CBA 2014

it was a really cool game jam!! i could take there my big pc ,and everything was awesome!
check out the games we did globalgamejam.org/2014/games?t…

and the game of my team, RotaTail ,(its for windows 64 bits)
globalgamejam.org/2014/games/r…  
i cannot play it on my computers,all have 32bits version, bohhh!!)

oh! and if you know the reason of why the 3d stingray i made has that line in the renders i would appreciate very much if you could hhelp me!