Red Launcher
A custom Minecraft launcher built for Red Legion. Microsoft auth, one-click modpack installs, instance management, and a whole lot more — all wrapped in a clean dark UI.
Windows · macOS · Java 21 auto-downloaded on first launch
What's Inside Right Now
These features are fully implemented in the current release.
Microsoft Accounts
OAuth2 login via Microsoft with duplicate prevention and fast account switching.
Pack Management
Tensura and Vault Hunters out of the box. Drag-to-reorder, per-pack settings, and .zip imports.
Java Auto-Downloader
Detects your installed Java or automatically downloads Adoptium JRE 21 on first launch. No manual setup needed.
Live Download Progress
CTA button transforms into a live progress indicator showing file type and percentage while assets download.
Instance Management
Per-instance tabs for Mods, Shaders, Worlds, Servers, and Settings. RAM slider, custom JVM args, auto-join.
Accent Theme System
8 solid accent colours to personalise your launcher experience.
Modpack Auto-Update
Detects new modpack versions from GitHub Releases and updates your instance automatically on launch.
Launcher Self-Update
Polls GitHub Releases for new launcher versions, shows a badge, and handles download and restart seamlessly.
Download Red Launcher
Grab the latest release from GitHub and jump straight into Red Legion.
Download NowSource available at github.com/Crimson-Legion/Red-Launcher