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DOOM 3: Phobos

in library

4/5

( 72 Reviews )

4

72 Reviews

English
FREE

DOOM 3: Phobos is a MOD

GOG’s curated selection of the best Mods, directly packed with the game for the smoothest installation ever. Install and play right away.

  • Requires DOOM 3
  • Install and play right away
  • Directly packed with the game

DOOM 3: Phobos is a MOD

GOG’s curated selection of the best Mods, directly packed with the game for the smoothest installation ever. Install and play right away.

  • Requires DOOM 3
  • Install and play right away
  • Directly packed with the game
Why buy on GOG.COM?
DRM FREE. No activation or online connection required to play.
Safety and satisfaction. Stellar support 24/7 and full refunds up to 30 days.
DOOM 3: Phobos
Description
  Waking up on Mars with no memory and a wound you can’t explain, you begin a desperate search for answers - about yourself, your past, and the catastrophe looming over two worlds.   You soon meet Samantha Miles, an agent of a sketchy world-wide conglomerate, who claims to know you. As she helps yo...
Genre:
User reviews

4/5

( 72 Reviews )

4

72 Reviews

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Product details
2018, Team Future, ...
System requirements
Windows 10, 2.0 GHz dual core, 3 GB RAM, NVIDIA GeForce 9800 GT / ATI Radeon HD 5750, 512 MB video R...
Time to beat
12 hMain
-- Main + Sides
-- Completionist
12 h All Styles
Description

 
Waking up on Mars with no memory and a wound you can’t explain, you begin a desperate search for answers - about yourself, your past, and the catastrophe looming over two worlds.
 
You soon meet Samantha Miles, an agent of a sketchy world-wide conglomerate, who claims to know you. As she helps you with your identity, you aid her in the quest to find a long lost friend and missing agent. When the original events of Doom 3 unfold, the two of you must scramble for safety while still tracking down the missing agent and your identity.
 
Haunted by fragmented memories and guided by the familiar voice of a girl named Lee, you’ll unearth bittersweet flashbacks, and fight for survival as a mysterious and deadly invasion spreads from the shadows of Mars.
 
Doom 3: Phobos is a free mod for Doom 3, available to anyone who owns the base game and DOOM 3: Resurrection of Evil Expansion. It is developed non-commercially by Team Future.
 

 
Explore a new set of maps, enemies and story for the beloved old Doom 3 game.
The game is divided into 4 episodes of varying length.
 
Episode 1: Overdue
Released December 3 2018
 
Episode 2: Disruption
Released September 27 2020
 
Episode 3: Collapse
Released June 2 2024
 
Episode 4
To be released
 

Features:

  • Original story set in the Doom 3 universe
  • Original voice acting
  • 19 Original maps
  • 3 episodes
  • New and improved shotgun
  • 4 new enemies
  • Updated weapons and enemies
  • Improved and fast paced combat
  • Environmental puzzles
 
System requirements
Minimum system requirements:
Why buy on GOG.COM?
DRM FREE. No activation or online connection required to play.
Safety and satisfaction. Stellar support 24/7 and full refunds up to 30 days.
Time to beat
12 hMain
-- Main + Sides
-- Completionist
12 h All Styles
Game details
Genre:
Works on:
Windows (10, 11)
Release date:
{{'2018-12-03T00:00:00+02:00' | date: 'longDate' : ' +0200 ' }}
Size:
5.1 GB

Game features

Languages
English
audio
text
GOG Mods
  • Curated selection of best mods
  • New free content for your games
  • Just install and play

From bug fixes, restored cut scenes, quests and characters to completely freshly-made new content, Mods are an essential part of the video game preservation. We teamed-up with these community-driven projects creators to offer you this list of handpicked Mods. Combining our strengths, these are now accessible right away, already installed within the base game for the smoothest experience.

The Mod you’re about to enjoy is the work of passionate fans who wanted to share their love in an even more meaningful manner. While every effort has been made to ensure a high-quality, stable experience, the original developers or publishers aren’t responsible for any issues that may occur from using this content.

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User reviews

Posted on: June 11, 2025

naryanrobinson

Verified owner

Games: 398 Reviews: 2

great mod held back by 20yo tech

Let's just assume Phobos starts with a 9/10, because on paper it's basically everything you could want from a Doom 3 overhaul — and a few things you probably don't. • better story than you're probably asking for (although arguably too much of it) • great level design • great art direction and attention to detail • above average sound work. • weapons feel punchy and distinct making the main point of the game feel good So what's the problem? The problem is, for some reason, the game only works on what is essentially the first ever iteration of idTech 4, from 2004. And that comes with a number of issues, but cheifly among them... you'll be stuck at 60fps. This mod doesn't run on BFG Edition or even dhewm3 for some reason. In case you're wondering, RBDoom3BFG is objectively the best way to play Doom 3, and vanilla idTech 4 is objectively the worst. My monitor is 240Hz, meaning this mod runs at a 75% reduction in smoothness compared to everything else, compared to what I'm used to. Unfortunately for me, I just can't play Doom 3 at 60fps in 2025, and so, a 9/10 mod translates to 3/5 stars. It's almost tragic.


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Posted on: August 30, 2025

itsJustin

Verified owner

Games: Reviews: 1

Initial impressions not good

3080M getting about 10 fps. will reboot and try again.


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Posted on: June 15, 2025

silentanustootz66

Games: 18 Reviews: 1

Realy tried to see all the "HYPE"

It's a very Meh mod. in short just play doom3 and roe. tried it, beat it, got hemroids from it.. wish i wasn't forced to give a star, the mod aint woth one star..


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Posted on: July 31, 2025

MemoriesovSorrow

Verified owner

Games: 37 Reviews: 10

the beta doom guy

very cucky storu of a kid who simps in mars pros new enemies weapons maps cons dialouge story


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Posted on: June 10, 2025

softbaker

Verified owner

Games: 219 Reviews: 27

Boring waste of time

Got this for free but feel like someone owes me money for my lost time. Worst game intro of all time, voice acting is so lame I muted most of it. Did anybody tell the dev this is supposed to be entertaining for Doom fans? What the hell were they thinking? I would rather eat a box of chalk while sipping on battery acid than play this thing.


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