Recomp / Games / Windows

OpenIW4

Attempt to document and reimplement key IW4 multiplayer functions of the Modern Warfare 2 engine.

Rewrite Human-led stalled
Image: the project's own README · source
Stars37+0 ★ in 4 days
Commits, 30 days0
Latest release—
Last pushMay 12, 2024

GitHub figures as of 2026-10-18, refreshed daily.

Facts

Original
Call of Duty: Modern Warfare 2 (IW4 engine) (2009)
Platform
Windows
Method
Rewrite
Provenance
Human-led · Repo created 2022, predates AI coding tools (GitHub) what this means
Status
stalled
Licence
WTFPL
Team
OpenIW4
Started
2022-04
Runs on
Windows
Needs the original
Yes: you supply your own legally obtained copy

How to get it legally

This project ships code only. Build or download it from the official repository, then supply data from a copy of Call of Duty: Modern Warfare 2 (IW4 engine) you own. Recomp never links to ROMs, discs or game data.

This project was rebuilt by OpenIW4. Facts last checked 2026-10-14. Suggest a correction

Sources

Something wrong or out of date? Send a correction.

+28 ★ in 4 days

Xbox 360 · 2009 · ★ 100

Modern Warfare 2 Recompiled

Call of Duty: Modern Warfare 2 (2009)

Recompiles the Xbox 360 executables of Modern Warfare 2 to run natively on Windows and Linux.

Static recomp Not stated
+1 ★ in 4 days

MS-DOS · 1993 · ★ 111

1oom

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Rewrite Human-led

Windows · 1995 · ★ 77

3D Pinball Space Cadet Disassembly

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Archived disassembly of the Windows pinball game; the author points to the SpaceCadetPinball project for a working version.

Decompilation Human-led
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Abyss Engine

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Clean-room Not stated

Windows · 1997 · ★ 128

Age of Empires Free Software Remake

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C++ reimplementation of Age of Empires and its Rise of Rome expansion on the Genie engine design, written as a non-profit hobby project.

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+2 ★ in 4 days

Windows · 2001 · ★ 136

Arcanum Unity Reimplementation

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Rewrite Not stated