Minecraft: Java Edition (Horizon)
Game: Minecraft: Java Edition (Windows, 2011)
A rewrite of Minecraft: Java Edition 26.3 in Rust, called Horizon: a native game that reads the same worlds, follows the same rules, and generates the same terrain as the Java game, checked against it by more than 300 differential harnesses. It is installed through a launcher of its own, which prepares the files from your copy of Minecraft (the install you already have, or one downloaded from Mojang for your account) and updates itself; the game ships on a single channel, the Nightly. The repository states that it contains no Minecraft code, assets, or data. Its own audit gives 100% parity with Java, but it clarifies that this means what the harnesses compare, not that nothing else differs. It runs on Linux, Apple Silicon macOS, and Windows. Launcher 0.2.26 was published on October 29. 28 of its last 100 commits list Claude as a co-author.
You needA Microsoft account that owns Minecraft: Java Edition (the launcher signs in with it) and the game’s 26.3 version; if you don’t have it installed, the launcher downloads 26.3 and the Java it needs from Mojang for your account. A GPU with Vulkan or OpenGL 3.3 on Linux, Vulkan or DirectX 12 on Windows, or any Apple Silicon Mac.
- How it gets to PC
- Fan reimplementation
- Console
- Microsoft Windows
- Original studio
- Mojang Studios
- Year
- 2011
- Author
- horizon-rust
- Stars
- 8.7k
- Last activity
- 2026-11-11 · today
- Latest version
- v0.2.97 · 2026-10-28
- License
- MIT
- Language
- Rust
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