I never posted here, but I quite like the game engine myself. Some time ago I helped Doc Holiday with some python things, and I created an environmentmapping demo for him. It occured to me that somebody else might find this sort of interesting too, so you can get it here:
It uses the plugin but I don’t know if I did it correctly, it seems ok on my system. If it doesn’t work, you can still download the blendfile in any case.
It is not REAL environment mapping btw, but NORMAL mapping.
Thanks to Saluk for figuring out how getVertexArrayLength really works, his animtex code probably is a better example if you want to know more about that. I didn’t use the exact same method here, as it slightly slowed it down, of course even one frame per second extra is always better…