The Classic Doom 3 modification is a remake of the original Doom game, by id Software. The main emphesis is that of brining the older game up to date in a modern graphics engine. The project makes use of all of Doom 3's advanced
graphical features while retaining the feel and gameplay of the original game.

The project will only cover the shareware levels due to many reasons that include the following :

- We are bored of converting over peoples stuff and want to create something of our own.
- The mod started off as a fun way to learn how to mod for Doom 3, and we all feel we have learnt what we need to make our own project.
- A more minor reason is the legalities of remaking anything past the freely availible shareware episode.

Our latest build is version 1.3.1 which is the final version that we plan to release. This version is numbered 1.3.1 to reflect the fact that it has been tested to work with Doom 3 patch release 1.3.1, and thus works both with Doom 3 on steam and windows vista.

For more information please visit Flaming Sheep Softwares website that can be found at:

If you have any further questions about the project, feel free to register on our forums and ask anything related to the project.

We hope you enjoy the mod.

  • View media
  • View media
  • View media
  • View media

We have put together a new “final” release of our mod, Classic Doom 3 to satiate those who have recently bought Doom 3 via the steam download service, or those who wish to play the mod running Doom 3 patch 1.3.1. You can get the files from the mod page here at the moddb website.

When Doom 3 patch 1.3.1 was originally released, we did not update the code as it was not seen as a major update to the base Doom 3 game. Due to this, the past Flaming Sheep Software coder SnoopJedi released an update patch, 1.2, for Classic Doom 3 on his own accord, which gave compatibility with version 1.3.1 of Doom 3, but introduced a number of fatal bugs.

Over the past month, since the release of Doom 3 on the Steam network, a number of team members were contacted exponentially by players about errors with Classic Doom 3 1.1 when used with the Steam version of Doom 3. What transpired is that Classic Doom 3 1.1 did not work correctly due to the steam version of Doom 3 being fully patched to version 1.3.1.
Several of the past members of Flaming Sheep Software have come together to resolve these issues once and for all, and to tweak the mod further to improve the gaming experience.

Classic Doom 1.3.1 is a full mod release that has been fully tested as compatible under the following versions of Doom 3:

Steam Doom 3
This version should work without any updates as Doom 3 patch version 1.3.1 is included when purchased on steam. Simply download the zip or windows installation packages to play the mod.

Windows Doom 3
You are required to download Doom 3 patch 1.3.1 alongside our mod to enable it to work with a retail version of the game. The patch required can be downloaded from our host at the follow location:

Linux Doom 3
As with the Windows version of Doom 3, you are required to download Doom 3 patch 1.3.1 for Linux operating system before installing Classic Doom 3 1.3.1. You can get the required patch from the following location:

Mac Doom 3
While it hasn't been tested due to not being able to find a tester who owns a mac, this release has been built for mac users as well. We hope the code works. It to like every other OS, requires the 1.3.1A patch which can be found at the following:

We would once again like to thank the community for their support of this project. Please continue the Classic Doom 3 experience with Last Man Standing Co-op, the official supported mod, which can be found here:

Finally I would personally like to thank SnoopJedi for starting the move to 1.3.1 with Classic Doom 3 1.2, Deadite4 for his code fixes and BHenderson for fixing some animations.

Classic Doom 3 1.1 Final

Classic Doom 3 1.1 Final

News 0 comments

As a team, we have finally decided that it is time to close the project, and we want to do so with a bang. As per the previous news post, we have fixed...

Classic Doom 3 V1.0 release

Classic Doom 3 V1.0 release

News 5 comments

Classic Doom V1.0 has now been released and can be downloaded from the following locations: Once downloaded you will be able to play through recreations...

Classic Doom 3 V1.0 media update

Classic Doom 3 V1.0 media update

News 0 comments

With the version 1.0 release coming up very quickly, we would like to tell you all a few details about what will definitely be in our "final&quot...

Classic Doom 3 news update

News 0 comments

Over the last month we have been working solidly towards creating a relatively bug free build of Classic Doom 3 that can be passed to the Last Man Standing...

Classic Doom 3 1.3.1 (installer)

Classic Doom 3 1.3.1 (installer)

Full Version 12 comments

Classic Doom 3 1.3.1 windows installer for use with windows XP and Vista - this version is steam compatible.

Classic Doom 3 1.3.1

Classic Doom 3 1.3.1

Full Version 14 comments

This version of Classic Doom 3 is compatible with all supported operating systems and distribution platforms (Windows, Linux, Mac) and address a large...

Post comment Comments  (50 - 60 of 162)

Problem fixed
my game will be installed with 1.3.1
but i found a patch who overwrite it.
whatever it works now =)

Its an awesome mod
It makes alot of fun to blast them all from the map ;)
On some party on the map it really extreme dark.
and i would Prefer the Origininal single (wasnt it a remington?) Shotgun.
but Gameplay is fantastic
Nice work mate and keep it up

Reply Good karma Bad karma+2 votes

im a big fan of doomseries and i would like to play the old doom 1-2 on the Q4-engine.
but i cant start the mod
i get back to desktop and get "wrong game DLL API version" from the console
But i have installed 1.3.1 und i cant run the patch again.

Taken from console ----> DOOM 1.3.1302 win-x86 May 12 2005 10:40:52

Hope anyone know how to fix it.

My os is Windows 7 64BIT
The normal doom works without any problems on maximum settings.

ps. i have the retail and NOT the steam version.

I tried other mods but its still the same error.

Reply Good karma Bad karma+2 votes

I agree you should remake the whole game not just a few levels.

Reply Good karma Bad karma+3 votes

Its not easy to make new maps.
i guess they want do it perfectly so give them some time.
in half year we can talk about it.

I cant test yet but the screens looks nice.

Reply Good karma Bad karma+3 votes

Wait, there's more coming?

Reply Good karma Bad karma+2 votes

Just finished the mod.. please add the other levels as well !! that would make one awesome remake which I would be willing to pay for! I bet there are a lot of doom fans out there who really want to play the entire game! PLEASE PLEASE MAKE THIS HAPPEN!

Reply Good karma Bad karma+3 votes

Just played this and I am loving it!! Only the ingame music sucks (in my opinion) so I downloaded the PSX doom version music mp3's and played them in the background using Itunes while I turned the ingame music down/off. AWESOME! really atmospheric gameplay made me jump up once or twice xD just google for these psx songs they really match this mod!! Also created an autoexec with notepad containing this:

unbind "tab"
seta si_map "e1m1"
seta si_gameType "cdoomDM"
seta si_name "CDOOM Server"
seta r_mode "-1" //(enables customs resolutions)
seta r_aspectRatio "1" //(0 = 4:3, 1 = 16:9, 2 = 16:10)
seta r_customHeight "1080" //(Your screen height)
seta r_customWidth "1920" //(Your screen width)
com_allowconsole "1" //(enable console)
seta com_FixedTic "1"
seta r_fullscreen "1"

the com_FixedTic "1" will get rid of the microstutter which plagues the idTech 4 engine

simply place the autoexec in 'cdoom' this will improve gameplay a lot!

Using this autoexec the game will run in 1080p and with those psx tracks in the background you'll get a Doom experience the way it's meant to be played ;)

Reply Good karma Bad karma+2 votes

Why it includes only one episode? We want all 4 episodes and Doom II campaign.

Reply Good karma Bad karma+2 votes

Sure, go make them for us. :)

Reply Good karma Bad karma+2 votes

I remember when the mod had only 4-5 maps in the beta. Damn this was really cool - but then it evolved into THIS. Great work!

Reply Good karma Bad karma+2 votes
Post a comment

You are not logged in, your comment will be anonymous unless you join the community. Or sign in with your social account:

Doom III
Doom III
Send Message
Release date
Mod watch
Start tracking
Community Rating



150 votes submitted.

You Say


Ratings closed.

Highest Rated (3 agree) 10/10

This is FREAKING AMAZING all the maps look familiar yet updated and new, and it has remakes of the original music heard in the first DOOM. There is even an opening cinematic that explains how the main character gets there in the first place. Awesome. Just freaking AWESOME.

Dec 6 2010 by WMan22

Embed Buttons
Link to Classic Doom 3 by selecting a button and using the embed code provided more...
Classic Doom 3
Last Update
344 members