The RA X-pantion universe is well-known Half Life universe. The main hero is Gordon Freeman, came to snowy, cold, dangerous Syberia to stop teleportation experiments by Russian scientists. Unique cold war crisis atmosphere, strong and interesting storyline, lot's of features and totaly-conversed gameplay.
The Demo was hard to find and it was riddled with glitches, but man, was this mod loaded with weapons!
The mapping was not proportionate in many places and I had no idea what I was doing the entire time, but I had a blast gunning down new enemies and many of the weapons were fun to use.
It's a shame the full version never got released, as this demo was very long and more fun then it should have been :(
no downloads..that's a joke