Modern .NET Platform
Built on the latest .NET with native Linux support and cross-platform compatibility out of the box. OS-level networking and minimal memory overhead keep your shard lean and responsive.
Code-Generated Serialization
Automatic persistence powered by C# source generators. Annotate your fields and get version migrations, dirty tracking, and zero-boilerplate world saves—no manual serialization code required.
Active Development & Community
Actively maintained with regular updates and a growing contributor base. Get help on Discord, collaborate on GitHub, and be part of a community that’s pushing UO emulation forward.
Built for Performance at Scale
Engineered for large shards. Optimized data structures, a lock-free architecture, and parallel world saves ensure your server stays smooth under heavy player load.
Up and running in minutes
Clone, build, and launch your server with three commands.
- Windows
- macOS
- Linux
git clone https://github.com/modernuo/modernuo
cd modernuo
./publish.cmd release win x64
git clone https://github.com/modernuo/modernuo
cd modernuo
./publish.sh release osx x64
git clone https://github.com/modernuo/modernuo
cd modernuo
./publish.sh release linux x64