Doom 3: Phobos

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The Arachnotron will make an appearance.
The new FCE Shotgun

Doom 3: Phobos is a Doom 3 modification being developed by Team Future. It has been in development since 2004. Episode 1 was released on December 3, 2018, followed by Episode 2 on September 27, 2020, and Episode 3 appeared on May 30, 2024.

It was released as one of three inaugural GOG Mods on June 9, 2025.[1][2]

Story[edit]

In the first episode, you wake up inside a repurposed apartment in Mars City. You do not recall how you got there or any specifics about your person. You soon meet Samantha Miles, an agent of a sketchy world-wide conglomerate, who claims to know you. While 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.

Features[edit]

Doom 3: Phobos will contain:

  • Improved Doom 3 assets
  • New monsters:
    • Arachnotron
    • Baron of Hell
    • Pain elemental
    • Bereft soul
    • Spectres
    • Red cacodemons
  • New shotgun
  • The FCE (Federal Commonwealth of Earth), alongside UAC
  • Realistic story elements
  • Revised and enhanced gameplay
  • Non-linear level design

Compatibility[edit]

Officially, the mod is currently only functional with the original executable, but porting to Dhewm3 has been mooted pending the mod's completion.

An unofficial patch that makes the mod compatible with Dhewm3 is available on Mod DB.

External links[edit]

References[edit]

  1. McCarter, Reid (10 June 2025). "Doom 3 has a huge, unofficial story expansion, and it's just been relaunched." PCGamesN. Retrieved 18 June 2025.
  2. Wolens, Joshua (8 June 2025). "GOG takes on the Steam Workshop with the official launch of one-click modding, and Skyblivion is headed to the store later this year." PC Gamer. Retrieved 18 June 2025.