One of our developers in residence, Ramsey Nasser is part of a project to integrate Clojure and Unity 3D.   Clojure brings the live editing, dynamic typing, and persistent data structures of a modern Lisp to the world of video games. Unity brings the cutting edge graphics, real time physics, and multi-platform export offered by an industry standard engine to the world of functional programming.  Arcadia’s goal is to make these two powerful tools interoperate seamlessly to provide a powerful and fluid game development experience. 

Check out Ramsey and Tims Gardner make a flappy bird clone in Arcadia in this video:

Make sure to read Arcadia's wiki for more information!