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.

ThreeNil says

1/10 - Agree Disagree (6)

Mod doesn't even launch. Just white screen. 1/10 for trying. I've even seen videos of this and I really want to play it but nope. Either the developers are too lazy to fix a problem or no one else has it because I have searched everywhere.