It's almost done
I just want to correct one thing of the article:
There are two different versions of the engine, the CS and the BGE.
The engine referred by the article is the blender game engine (BGE) which is the engine built-in blender3d itself.
The other engine is the one based on crystal space and it has a beta version already on-line but it still needs a lot of optimizations and works on debug mode which make it considerably slower. This game engine is much better in terms of visual effects and should be considered as the main flag to take this project towards it's goal which is to deliver a game made with open software using blender+CS with the same quality of a commercial game.