This is an 3d example of Half life for Multimedia fusion 2. MMF2 Doesn't really do 3d good but still can be done. However 2 Floor levels (stars,slopes) is not recommeneded for it.
*Only works for Multimedia fusion 2
*Some textures are transparent and need black filling
strange, i still can't get it to work, maybe my version of mmf2 is too high. old versions of extensions tend to stumble on this problem from time to time