Recomp / Games / Multi

Horizon

A Rust rewrite of the Minecraft: Java Edition 26.3 client and server, with hundreds of differential test harnesses comparing its behaviour against the Java game. Its launcher builds the game's resources from the player's own Java Edition copy (a Microsoft account that owns the game is required); data and native Rust mods load, Java mod jars do not.

Rewrite AI-assisted released

v0.2.97 released 7 days ago. Get new releases by RSS

More like this: Absorb · Age of Empires Free Software Remake · Arcanum Unity Reimplementation

Image: the project's own GitHub preview · source
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Latest releasev0.2.97Oct 28, 2026
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Facts

Original
Minecraft: Java Edition (2011)
Platform
Multi
Method
Rewrite
Provenance
AI-assisted · AGENTS.md, CLAUDE.md and a .claude/skills folder in the repo; commits carry Claude Opus and Codex co-author trailers (github.com/horizon-rust/horizon). what this means
Status
released
Licence
MIT
Team
horizon-rust, ludovic111
Started
2026-10
First release
2026-10
Runs on
Windows, Linux, macOS
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 Minecraft: Java Edition you own. Recomp never links to ROMs, discs or game data.

This project was rebuilt by horizon-rust, ludovic111. Facts last checked 2026-11-04. Suggest a correction

Sources

Something wrong or out of date? Send a correction.

Multi · 2011 · ★ 10

Absorb

Minecraft server

Minecraft server reimplementation designed around multithreading and async work, stating it contains no original Minecraft code.

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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.

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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
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Windows · 2001 · ★ 14

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.

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benilla

World of Warcraft 1.12.1 client

From-scratch World of Warcraft 1.12.1 client in Rust and Bevy that reads data from your own 1.12.1 install; file formats, the network protocol and the interface engine are all reimplemented, with no original client code.

Rewrite AI-assisted