I created a new game using Construct2 free edition with the Copperlicht 3d plugin. Is a fps shooter (doom-like) where you have to find a treasure chest in a maze. The mazes can be created by players (level editor included).
The url is:
http://mathbattlegame.appspot.com/static/PhyFPS/index.html
The url is:
http://mathbattlegame.appspot.com/static/PhyFPS/index.html