A massive demonic invasion has overwhelmed the Union Aerospace Corporations' (UAC) Mars Research Facility, leaving only chaos and horror in its wake. As one of only a few survivors, you struggle with shock and fear as you fight your way to Hell and back in an epic clash against pure evil.

Built on a revolutionary new 3D graphics engine, Doom III draws you into the most frightening and gripping 3D gaming experience ever created.

Dripping with atmosphere and changing the look of 3D games forever, Doom III features realistic physics, 6-channel surround-sound, and real-time dynamic lightingand shadows that create and environment of ever-changing fear and uncertainty. Compete in vicious multiplayer action where light, shadows, and a totally dynamic world can be used to your advantage or peril.

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What's New in v1.1

Updated Menus: Now the options and controls of CstDoom3 can be easily configured using the menus (both the main and the multiplayer menus have been updated), and your settings are properly stored. Also, some options of Doom 3/RoE that were originally hidden are now accessible (for example, you can set a custom resolution via System/Advanced Options). The images below give an idea of what you will find there. Notice that the Game Options window has more options than what is shown in the screenshot (click on the image for additional information).


Game Options

Advanced Options


Run, Crouch, Zoom Indicators on HUD: If enabled, an indicator is displayed on the HUD while Run/Crouch/Zoom is active (each control has its own indicator, and you can choose which ones are enabled). This is particularly useful if you configure these controls as toggles. The indicators are shown in the image below (lower left). Run is red with ">", Crouch is yellow with "-", and Zoom is blue with "+".

Run, Crouch, Zoom Indicators on HUD

Bug Fixes: The detected bugs from the previous version, as well as some additional issues from Doom 3/RoE, have been fixed. See the included list of changes for the details.

The Features

Here is a brief list of what is available:

  • Show access codes (locker codes, etc.) on the HUD
  • Grabber and Double Barrel Shotgun in Doom 3
  • Chainsaw in RoE
  • Additional key layers for the game controls
  • Headlamp
  • Demigod mode
  • "Always Run" / "Toggle Run" in singleplayer; Stamina drop can be disabled
  • Run, Crouch, Zoom indicators on HUD (new in v1.1)
  • Smoke control
  • Damage feedback control
  • Other stuff

For a better overview, see the description in the top of the CstDoom3 profile. Notice that all features are optional (opt-in).

A Tip

Since the Grabber can be used in the Doom 3 campaign, you might like to know that it can be very effective against a powerful enemy.

Grabber vs. Sabaoth

Additional Notes

  • CstDoom3 is for the original releases of Doom 3 and RoE. It works both with the retail discs (patched to version 1.3.1) and with Steam (no patches required). It does not work, however, with the BFG edition.
  • Only Windows binaries are provided. These should work from Vista onwards.
  • The complete source code is included. Compiling for Windows requires only Visual Studio 2015 (Community Edition is fine).

Get It

CstDoom3 v1.1

Refer to the included manual for installation instructions.

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ah i forgot how retarded patch 1.3.1 is, guess ill have to reinstall everything.....

Reply Good karma Bad karma+1 vote

agreed theyre prob the best custom maps available =)

Reply Good karma Bad karma+2 votes

and it is patched to the last officially released 1.31 according to id's own site

Reply Good karma Bad karma+1 vote

reinstalled my beloved Doom, BUT now i get these weirs shadowy effects that makes guns and monsters sorta invisible, and it crashes after a while with msg of malloc failure for 12307307, which sayd nada to me, wth??? :( anyone else having this bs? im on (lousy) win8.1 4 gb ram

Reply Good karma Bad karma+1 vote

Can someone with D3 modding experience make simple mod for me? I want a RoE super shotgun in base D3. I know there are many similar things already but all of them didn't assigned a hotkey for the SSG. Or atleast tell me how to do this.

Reply Good karma Bad karma+1 vote

You'll have to edit the source code.

Reply Good karma Bad karma+1 vote

Really want to try some new maps, so far I've only tried In Hell and Hallowed mod, any other good Level packs ?

Reply Good karma Bad karma+1 vote

Here's the list of good maps (exluding crappy **** from the likes of Benjamin Pulido)

BJA Lost Facility
BJA Genetics
DBZ3 Last Hope - I can't find that damn DBZ2 map til this day.
Hexum Executive Quarters - creepy Ring girl **** in here.
Kiltron Trite Breeding Facility - The classic.
The Sigma Core
Urukhai - very weird map this one, also unintentionally creepy.
UAC Franchise 666 - a set of 4 maps.
Tlab complex
Obi-wan Map01
Omega Labs
Omega Research Facility - The internal name of this one is actually also named Omegalabs so make sure you got the right one. This one has 2 maps

I don't know if there're still any of these available for download since the closure of Doom3world, fileplanet and gamefront. If you can't find any of these maps, just message me.

Reply Good karma Bad karma+4 votes

Some of them could be found here:
If you don't worry about responsibility or credits, it would be nice to have them uploaded here, at least for sake of their safety.

Or may be I should compel myself to dare to do that.

Reply Good karma Bad karma+3 votes
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Doom III
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548 votes submitted.

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Ratings closed.

Highest Rated (9 agree) 10/10

Scary, creepy, fun, addictive, awesome graphics and cheap... Just perfect

Feb 14 2011 by bluluxabica

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