2 answers for this one.
1. It's made in a new language called Monkey2 - a version of basic that is compiled down into c++.
2. currently monkey2 3d is being developed, so all of this is actually custom programmed from scratch in OpenGL. That includes the 3d editors and everything else. I'm sort of working with a new timeline system I'm working on to provide lots of interaction and animation. I also did all the particle stuff, etc, so there is nothing that is actually used off the shelf.
Here's a current pic of the animated lighting for the Battle Arena
I know it looks a bit dark, but it's a work in progress...
