Doom 3 OpenCoop mod for Windows

Used Doom 3 OpenCoop mod for Windows?

Editors’ Review

Download.com staffFebruary 26, 2026

This mod introduces cooperative gameplay to Doom 3's single-player campaign, allowing players to team up for the classic shooter experience.

Top Recommended Alternative

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Free

Pros
- Enables cooperative play for Doom 3
- Enhances single-player experience with multiplayer
- Adds new dimensions to classic gameplay
Cons
- Currently in beta stages
- Expect future improvements and fixes

Doom 3 OpenCoop mod for Windows

Used Doom 3 OpenCoop mod for Windows?

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Full Specifications

GENERAL

Release: April 27, 2005

Latest update: February 26, 2026

Version: 2.0-beta

OPERATING SYSTEMS

Platform: Windows

Operating System

Windows 2000
Windows 98
Windows XP
Windows ME
Windows 10

Additional Requirements: Windows 98/Me/2000/XP, Doom 3 full version

POPULARITY

Total Downloads: 8,009

Downloads Last Week: 1

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Developer’s Description

By Richard Schmidt

Bring cooperative gameplay to Doom 3 with this mod.

This Doom 3 mod aims to bring cooerative play to the single-player experience. This mod is still in beta stages, so expect much more improvements in later releases.