Has anyone seen then demo of Serious Sam? Its pure OpenGL and has a Technology Level that you can run around and inspect blended models, lighting, bump maps,etc. Its only about 16mb ( small for a game demo). Anyone interested in OpenGL programming would be interested in this I think. The environmentally mapped undulating metal blob is amazing. As I say , its not so much the game itself, but the fact that anyone here could have a look at the Technology Test Level(and its individual elements) and have a fair idea how to actually implement it. Demo available at: http://www.ga-source.com/all/news/bits/05+11+2000/11:02:55.shtml

Apologies. Its 46mb in size.