Gens LauncherRedefining your Minecraft experience.

High-performance, secure open-source launcher powered by Gens-Horizon Delta Sync technology

Horizon Delta Sync

Headless cloud synchronization engine that uploads and downloads only modified bytes, drastically saving bandwidth and storage.

Seamlessly configure and launch Vanilla, Fabric, Forge, Quilt, and NeoForge instances with automated Java runtime detection.

Strict Electron context isolation, sandboxed preload traversal shield, dual-layer CSP, and hardware-bound AES-256-GCM encryption.

Search and install mods, resource packs, and shaders directly from Modrinth and CurseForge in one single click.

Secure Microsoft Device Code authentication and a smart offline fallback system when disconnected from the Internet.

Automatically updated on Debian and Ubuntu via our official signed GPG APT repository, alongside AppImage, Windows .exe, and macOS .dmg.

Gens Launcher — Survival 1.21 Fabric (Horizon Delta Sync)

Survival 1.21 Fabric

Minecraft 1.21.4 • Fabric 0.16.9 • 38 Mods • Horizon Smart Sync

Preparing

Microsoft Authentication0%

Validating OAuth2 Device Code session...

Choose your operating system to download and install Gens Launcher:

Download the official Windows installer bundle with desktop and start menu shortcuts.

Windows SmartScreen Notice: Independent open-source project. If Windows shows a blue warning, click "More info" and then "Run anyway".

An interface designed for clarity, speed, and deep customization.

Clean & Modern Home Interface

Advanced Instance Management

Integrated Content Catalog

Everything you need to know about Gens Launcher and its features.