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.
General / Cinematic | Phobos - Episode 1 Gameplay Trailer
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Community-Made Mod

This community-made mod requires that you own Doom 3.

Click here to learn more about mods on Steam.

Install Doom 3: Phobos

 

About This Game

In order to launch the mod make sure that Steam version of original Doom 3 and Doom 3: Resurrection of Evil is installed

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.

Explore a new set of maps, enemies and story for the beloved old Doom 3 game.

You need Doom 3 and Doom 3: Resurrection of Evil installed

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

AI Generated Content Disclosure

The developers describe how their game uses AI Generated Content like this:

AI is used for one select character voice. Will be replaced in future update

Mature Content Description

The developers describe the content like this:

Sensitive topics regarding terminal sickness, kidnapping, murder

System Requirements

    Minimum:
    • OS *: Windows vista/ Windows 7
    • Processor: 2.0 GHz dual core
    • Memory: 3 GB RAM
    • Graphics: NVIDIA GeForce 9800 GT / ATI Radeon HD 5750, 512 MB video RAM
    • Storage: 5 GB available space
    • Sound Card: Windows compatible sound card
    Recommended:
    • OS *: Windows Vista-64/ Windows 7-64
    • Processor: 2.4 GHz dual core
    • Memory: 3 GB RAM
    • Graphics: NVIDIA GeForce GTX 260 / ATI Radeon HD 5850, 768 MB video RAM
    • Storage: 5 GB available space
    • Sound Card: Windows compatible sound card
* Starting January 1st, 2024, the Steam Client will only support Windows 10 and later versions.

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