Defend Against Zombies - 3D Tower Defence game (Windows/Linux/OSX) Demo

Here's the first playable build of this Tower Defense game.  I haven't had much time to work on it this year so there are still rough edges but I wanted to release it even if there is still work to do. There's just one level in this, and three tower types. Additions should be relatively trivial given the main framework is complete, if I get time :)