Independent game reimplementation
Horizon
Category: Games & game engines · Type: Reconstruction
Target: Minecraft: Java Edition 26.3 · Rust native rewrite
Native client/server rewrite of Minecraft: Java Edition 26.3 in Rust that reads vanilla worlds, follows the same rules and terrain generation, and is checked against vanilla by hundreds of differential harnesses, installed via its launcher from the player's own Minecraft files.
Relationship
Independent reimplementation
Evidence scope
Upstream README states Minecraft Java 26.3 rewritten in Rust with 281 differential harnesses, and that Horizon contains no Minecraft code, assets or data. No REA involvement is claimed. Distinct from listed Forza Horizon 1: ReImagined (#96).
Know before you try
Singleplayer and limited multiplayer (LAN/offline-mode; no Microsoft account sign-in yet); Java mod jars unsupported (own WASM mod system). Needs Vulkan (Linux/Windows) or Apple Silicon Mac. We have not independently tested it.
Status
Actively maintained; launcher releases
License
MIT
No Minecraft code, assets or data shipped; requires own Minecraft: Java Edition 26.3 plus a one-time Java 25 JDK prep via the Horizon launcher. Unofficial fan rewrite.
Source checked