Recomp / Games / Windows

openOMSI

Ground-up Rust reimplementation of the OMSI 2 bus simulator that loads existing OMSI 2 maps, buses and mods from an installed copy of the original.

Rewrite AI-assisted wip

v0.3.44 released today. Get new releases by RSS

More like this: 3D Pinball Space Cadet Disassembly · Abyss Engine · Age of Empires Free Software Remake

Stars—
Commits, 30 days—
Latest releasev0.3.44Oct 26, 2026
Last push—

Facts

Original
OMSI 2 (2013)
Platform
Windows
Method
Rewrite
Provenance
AI-assisted · Commits carry Claude Opus Co-authored-by trailers what this means
Status
wip
Licence
AGPL-3.0
Team
openOMSI-org
Started
2026-09
First release
2026-09
Runs on
Windows, Linux, macOS, Android
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 OMSI 2 you own. Recomp never links to ROMs, discs or game data.

This project was rebuilt by openOMSI-org. Facts last checked 2026-10-26. Suggest a correction

Sources

Something wrong or out of date? Send a correction.

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
+4 ★ this week

Windows · 2000 · ★ 320

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
+4 ★ this week

Windows · 1997 · ★ 132

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
+6 ★ this week

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

Windows · 1999 · ★ 11

AutoZone High Stakes

Need for Speed: High Stakes (PC 4.50)

Open implementation of the PC version 4.50 of Need for Speed: High Stakes, reverse engineered from the Watcom-built binaries, aiming at a fully playable game and later 64-bit and new renderers.

Rewrite Not stated
+1 ★ this week

Windows · 2001 · ★ 13

AutoZone Motor City Online

Motor City Online

Open-source reimplementation of Electronic Arts' 2001 Motor City Online and its offline launcher, aiming for an end-to-end playable game.

Rewrite Not stated