Recomp / Games / Windows

OpenIGI

Clean-room C#/.NET 10 engine for Innerloop's two I.G.I. games that runs the original missions and QVM scripts from a retail install. Adds a renderer with Direct3D 12, Vulkan and WebGPU backends, ray tracing, co-op, modding and a launcher, plus a browser build.

Clean-room Not stated released

v0.6.2 released today. Get new releases by RSS

More like this: 1oom · 3D Pinball Space Cadet Disassembly · Abyss Engine

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Commits, 30 days—
Latest releasev0.6.2Nov 4, 2026
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Facts

Original
Project I.G.I.: I'm Going In and I.G.I. 2: Covert Strike (2000)
Platform
Windows
Method
Clean-room
Provenance
Not stated what this means
Status
released
Licence
GPL-3.0
Team
ShahriyarB, heaven-hm
Started
2026-10
First release
2026-10
Runs on
Windows, Linux, macOS, Web
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 Project I.G.I.: I'm Going In and I.G.I. 2: Covert Strike you own. Recomp never links to ROMs, discs or game data.

This project was rebuilt clean-room by ShahriyarB, heaven-hm. Facts last checked 2026-11-04. Suggest a correction

Sources

Something wrong or out of date? Send a correction.

+2 ★ this week

MS-DOS · 1993 · ★ 114

1oom

Master of Orion (1993)

Engine recreation of the original DOS Master of Orion that needs the original files; this fork is no longer in development, with the vanilla branch carrying the latest engine.

Rewrite Human-led

Windows · 1995 · ★ 77

3D Pinball Space Cadet Disassembly

3D Pinball for Windows: Space Cadet

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

Decompilation Human-led
+3 ★ this week

Windows · 2000 · ★ 327

Abyss Engine

Diablo II

Clean-room reimplementation of the Diablo II engine written in C, aiming to recreate the original game. Last updated April 2024.

Clean-room Not stated
+1 ★ this week

Windows · 1997 · ★ 133

Age of Empires Free Software Remake

Age of Empires and The Rise of Rome

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

Rewrite Human-led
+1 ★ this week

Amiga · 1993 · ★ 546

Ambermoon.net

Ambermoon

Full C# rewrite of the Amiga RPG Ambermoon for modern systems, with downloads for Windows, Linux and macOS.

Rewrite Human-led

Windows · 2001 · ★ 143

Arcanum Unity Reimplementation

Arcanum: Of Steamworks and Magick Obscura

Fan-made reimplementation of the Arcanum engine, built from scratch in Unity 6 with C# and a 2D URP pipeline.

Rewrite Not stated