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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
To play this game you also need
DOOM 3
In library In cart Soon GOOD OLD GAME Wishlisted
In library In cart Soon GOOD OLD GAME Wishlisted
0 Free
Play for free Coming soon
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:
Shooter - FPP - Horror
Tags:
Story Rich, Atmospheric, Sci-fi, Classic, First-Person, show 11 more... Great Soundtrack, Horror, FPS, Space, Shooter, Narrative, Combat, Walking Simulator, Zombies, Coming of age, Mod
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

Game length provided by HowLongToBeat

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:
Recommended system requirements:
Recommended system requirements:
To play this game you also need
DOOM 3
In library In cart Soon GOOD OLD GAME Wishlisted
In library In cart Soon GOOD OLD GAME Wishlisted
0 Free
Play for free Coming soon
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 length provided by HowLongToBeat

Game details
Genre:
Shooter - FPP - Horror
Tags:
Story Rich, Atmospheric, Sci-fi, Classic, First-Person, show 11 more... Great Soundtrack, Horror, FPS, Space, Shooter, Narrative, Combat, Walking Simulator, Zombies, Coming of age, Mod
Works on:
Windows (10, 11)
Release date:
{{'2018-12-03T00:00:00+02:00' | date: 'longDate' : ' +0200 ' }}
Company:
Team Future / Team Future
Size:
5.1 GB
Links:
Forum discussion
Game features
Single-player
Languages
English
audio
text
GOG Mods
Learn more
  • 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: July 22, 2025

vaultdwellerbg

Verified owner

Games: 503 Reviews: 3

Good mod

I've been eyeing this mod for some years and finally decided to give it a go thanks to GOG Mods, as installing mods can be a hassle sometimes. Overall I had very good time with the gameplay changes and the new/altered enemies. At times I felt lost and I didn't like some of the fights in cramped corridors. What I found most jarring was the way the story is handled. I appreciate that they tried something different, but the story driven sections are breaking the pacing in a bad way for me and the game does not feel like Doom at all in these moments. Nevertheless, it's a good mod and I would recommend trying it if you have any interest at all.

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Posted on: July 26, 2025

Patrol1985

Verified owner

Games: 477 Reviews: 5

A masterpiece

I finished the three episodes currently available (with the fourth and final one coming in the future) and was left wanting MORE! It's tough to describe how immersive the whole experience was. Gameplay-wise it's essentially Doom 3 (though in my opinion the level design trumps the one from the original game), but it's the intermission sections (the ones which show the past of the protagonist and his friend) that make this game! I highly recommend it and I thank you GOG for adding the one-click mod installation option, which allowed me to quickly install and enjoy Doom 3: Phobos.

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Posted on: June 22, 2025

worland2013_270

Games: 4 Reviews: 1

DOOM 3 Phobos

Very Good Game! Pays homage to the spirit of DOOM 3.

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Posted on: July 13, 2025

bookworm81151

Verified owner

Games: 40 Reviews: 8

Doomed to repeat

This is one serious game. I mean it is tough ! I am just at the first stage and already struggling to get up a flight of stairs.

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Posted on: July 13, 2025

christopher.singh4

Verified owner

Games: 28 Reviews: 3

fun game to play

fun game to play and enjoy. would play again

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