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.
This small tutorial will explain how to play the unofficial Underhell Coop mode built into the engine. It is unstable, buggy, it will crash and lag, but it's possible to have fun.Dec 15, 2013 Tutorial
Underhell has recently been Greenlit on Steam, thanks to everyone who voted. Updates on the weapon modeling of the game + a new ModDB design, and a Fan-Made trailer of Underhell Chapter 1.Dec 2, 2013 News
You want to play new horror games? Put that cash-wad away. No, really, put it away it’s crawling with deadly spiders. I have some good news - there are developers out there who like scaring complete strangers...Dec 2, 2013 Article
In case you haven't looked at the calendar, today Underhell begins! Also, development news!Sep 13, 2013 News
It's called Underhell, and it's calling itself a mod—though it's closer to a full, stand-alone game. Specifically, an episodic survival horror-adventure game.Sep 10, 2013 Article