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.

Herifos says

10/10 - Agree (3) Disagree

A beaultiful story and an amazing gameplay... Nothing to complain, and waiting for rest of the chapters.
This mod deserves a solid 10!