Fun game, thanks! On 64-bit Ubuntu 14.04 I had to install some 32-bit libs to make the 32-bit Linux binary work. Maybe consider adding a 64-bit build to the Linux zip, which would prevent this being necessary for future users. For reference I did "apt-get install libglu1-mesa:i386 libxcursor1:i386 libxrandr2:i386" which fixed it for me.