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Latest commit

### Summary
- [X] Fixes missing RangedTiles flag
- [X] Fixes typo in one of the mountain tiles
- [X] Changes sand to be a range.

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February 27, 2023 09:01
February 24, 2023 19:16

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Ultima Online Server Emulator for the modern era!

GitHub license GitHub stars GitHub issues
GitHub build AzurePipelines build


Supported Operating Systems

Windows 10/11/2016/2019/2022 MacOS 10.15+ Debian 10+ Ubuntu 16+ LTS
Alpine 3.15+ Fedora 33+ RedHat 7/8 CentOS 7/8/9 openSUSE 15+ SUSE Enterprise 12 SP2+ Linux Mint 17+ Arch

Running the server



git .NET

Supported IDEs

Jetbrains Rider 2022.3.1+spaceVSCodespaceVisual Studio 2022 v17.4+

Getting Started

  • Install prerequisite requirements
  • Clone this repository (or download the latest):
    • git clone
  • Open ModernUO.sln to start developing


  • Run ./publish.cmd [release|debug (default: release)] [os] [arch (default: x64)]
    • os - Supported operating systems
      • win - Windows 10/11/2016/2019/2022
      • osx - MacOS 10.15/11/12/13 (Catalina, Big Sur, Monterey, Ventura)
      • linux - Linux
    • arch
      • x64 - Intel 64-bit
      • arm64 - ARM 64-bit

Linux Prerequisites

Fedora, CentOS, RHEL, etc

dnf upgrade --refresh -y
# CentOS does not come with EPEL enabled
dnf install -y epel-release epel-next-release
# Note: libargon2 is old.
# Download/symlink from here:
dnf install -y findutils libicu zlib-devel zstd libargon2-devel tzdata

Ubuntu, Debian, etc

apt-get update -y
apt-get install -y libicu-dev libz-dev zstd libargon2-dev tzdata

Running the Server

  • Follow the publish instructions
  • Run ModernUO.exe or dotnet ModernUO.dll from the Distribution directory on the server

Troubleshooting / FAQ

Want to sponsor?

Thank you for supporting us! You can find out how by visiting the sponsors page.


Kamron Batman Mark1145


  • RunUO Team & Community
  • Voxpire, the ServUO Team & Community
  • Karasho, Jaedan and the ClassicUO Community

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