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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.

  • New M590 Shotgun by Alexander Voysey
  • New Sniper Rifle by Alexander Voysey
  • New SOCOM by Alexander Voysey
  • ModDB Design Concept Art
  • ModDB Design Concept Art (WIP)
  • New G36k by Alexander Voysey
  • New MP5 EOD by Alexander Voysey
How to play Underhell - Coop (Unofficial version)


How to play Underhell - Coop (Unofficial version)

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 been Greenlit on Steam !


Underhell has been Greenlit on Steam !

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
The 90 best horror games on PC


The 90 best horror games on PC

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
Underhell begins now


Underhell begins now

In case you haven't looked at the calendar, today Underhell begins! Also, development news!

Sep 13, 2013 News
This Mod Is Basically A Great-Looking, Full-Blown Survival Horror Game


This Mod Is Basically A Great-Looking, Full-Blown Survival Horror Game

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
Comments  (0 - 10 of 3,876)
Kaskito905 Apr 9 2014, 2:56pm said:

For those of you that get the "could not load library client" message, try to start the game through steam, it worked for me.

+1 vote     reply to
darkp5631 Apr 9 2014, 2:39am said:

i installed this mod using desura and i got the message also; "could not load library client.".. i seem to have this problem with every mod i install, also without desura.. could someone tell me what is wrong please

+2 votes     reply to
josh12345 Mar 23 2014, 11:32am said:

could not load library client...? anyone help pls?

+2 votes     reply to
Polaris223 Feb 15 2014, 7:38pm said:

anyone else having the problem were they cant start the game because im missing an executable. Can anyone help?

+2 votes     reply to
Nope.avi™ Feb 15 2014, 2:07pm said:

god damm that bathroom in your bedroom...

+1 vote     reply to
AmnesiaMaster28 Feb 2 2014, 5:45am said:

This mod looks epic!

+1 vote     reply to
FloUxHacKZ Feb 12 2014, 1:23pm replied:

i cant start it :(

+1 vote     reply to
bowser22 Feb 12 2014, 8:38pm replied:

me to

+1 vote     reply to
Zunic Feb 14 2014, 9:50pm replied:

What worked for me was starting it in offline mode.

+1 vote     reply to
santeri4456 Jan 27 2014, 6:32am said:

wonder when the next chapter comes out im really looking forward to it :D

+1 vote     reply to
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Track this mod Releases
Single Player
Latest tweets from @mxthe
@Soma630 Hey, sounds good to me, please refer to the following thread: T.co Apr 13 2014, 4:48pm
@ghuwevans Hey Gareth, I currently live in Mexico and the Raid 2 isn't coming out soon here. I really want to see it, and pay for it, how ? Apr 13 2014, 4:45pm
We just released a huge update on Insurgency, which includes all revamped coop maps by me! Played it yet? T.co Mar 29 2014, 1:53pm
Underhell Chapter 1 Spanish translation pack is out! T.co Thanks to Christian Chon Rubio (xxxlolgamerxxx) Mar 27 2014, 4:33pm
Here's the coop I've been working on for Insurgency: T.co Mar 18 2014, 8:10pm
Tom Stoffel just entered the Hans Zimmer competition! GIVE HIM SOME LOOOVE T.co Feb 19 2014, 10:23pm
Insurgency has just been released! I spent the last 3 months working on this game, and I really love the gunplay! T.co Jan 22 2014, 6:58pm
One of the highlight of Steam Dev Days for me: T.co Jan 19 2014, 5:19pm
Back home, Steam Dev Days was awesome, so many things to talk about! Jan 19 2014, 1:49am
Steam Dev Days, here I come! Jan 13 2014, 7:41pm
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