Underhell is a Source Engine game developed by the Underhell Team in collaboration with We Create Stuff. Underhell Chapter 1 requires ONLY Source SDK Base 2007 installed. No Source game is required.
The story kept my attention until I beat it and then some time after, thanks to that house. I seriously just sat down and did not get up until after I had beat the prolog; it was that good. Even though this mod is not complete, it already has a story deeper than any game I can bring to mind. I simply cannot wait for the rest to be done, keep up the perfect work!