Waking up on Mars with no memory and a wound you canât 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, youâll 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