🧀 Crispy Launcher
A desktop launcher that installs, prepares and starts the Rust Minecraft client — the Horizon
launcher, rebranded to Crispy Launcher, with its look kept under our control so an upstream
update cannot put the old UI back.
Download it from the releases page (Windows
installer, Linux AppImage) or from the website.
You need a Microsoft account that owns Java Edition, and a GPU with Vulkan or OpenGL 3.3
(Linux), Vulkan or DirectX 12 (Windows), or a Mac on Apple Silicon. If you already have a
Minecraft install (official launcher, Prism, MultiMC…) it is reused; without one, Play downloads
the game from Mojang for your account.
What it does
- Versions — lists the builds it can install, downloads one, and removes it again.
- Play — prepares the game from your own copy of Minecraft and starts it, as you.
- Accounts — signs in with Microsoft, checks Java Edition ownership, and keeps the session in
the OS keychain (Keychain, Credential Manager, Secret Service).
- Mods, modpacks, servers — browse and install, import a Java modpack, host a world for friends.
Step by step: launcher/README.md.
Run it from source
The launcher is its own Cargo workspace, built with GPUI:
cd launcher && cargo run --release
Updating without losing the UI
git remote add upstream https://github.com/horizon-rust/horizon.git
./scripts/sync-upstream.sh
The script fetches upstream, merges it, restores our version of every path in
crispy-ui.txt, re-applies the rebrand to the strings upstream added, and records
the merge as one commit. The launcher's own self-updater is switched off in
launcher/src/backend.rs, because it used to replace this binary with upstream's — wiping the UI.
Details: docs/upstream-sync.md and CRISPY.md.
Credits
A fork of horizon-rust/horizon, MIT licensed. The
original copyright notices stay: LICENSE and THIRD_PARTY_NOTICES.md
must ship with every copy.
Not an official Minecraft product, nor approved by or associated with Mojang or Microsoft. This
repository contains no Minecraft code, assets or data.
