uSkyBlock is an open-source Skyblock plugin for Paper and Spigot.

Start on a small floating island, build it into something thriving, complete challenges, and team up with other players to push your island further.



Why uSkyBlock
uSkyBlock gives you a complete Skyblock foundation with island progression, deep customization, and a maintained open-source codebase you can build on long term.

Complete Skyblock gameplay. Build your server around islands, progression, challenges, and party play.

Deep customization. Shape the experience with focused configuration including challenge design, biome options, custom islands, and more.

Integrates with your server. Extend uSkyBlock through its public API and placeholder support so it fits cleanly into your server.

Open source with proven lineage. uSkyBlock is fully open source under GPLv3, free to run, and backed by more than a decade of project history.

Maintained for modern servers. Continues to evolve for current Paper and Spigot versions, with new features, docs, support, and maintenance.

International by default. Support international player communities with bundled translations into 53 languages.

Project links

• Homepage and documentation: https://uskyblock.github.io/
• Source code and releases: https://github.com/uskyblock/uSkyBlock
• Issue tracker: https://github.com/uskyblock/uSkyBlock/issues

Documentation
Detailed documentation is available on the official site, including guides for Players, Admins, Developers, and Contributors.

Support and bug reports
We welcome any feedback, suggestions, and bug reports on GitHub:

https://github.com/uskyblock/uSkyBlock/issues

When reporting a problem, please include your server version (/version), uSkyBlock version (/usb version), relevant logs, and clear reproduction steps.