Highly Performant & Scalable Ultima Online Server Emulator
https://www.modernuo.com
c-sharpcsharpcsharp-coredotnetdotnet-coreemulatorgplgplv3mmommo-enginemmorpgmmorpg-serveronlinerpgrunuoserverservuoultimaultima-onlineuo
## Special moves Special moves were added [27 Apr, 2000.](https://uo.com/wiki/ultima-online-wiki/technical/previous-publishes/2000-2/2000-publish-05-27th-april/). This is well past the discussed cutoff date for T2A, which is **[Nov 23, 1999 - Publish 1](https://uo.com/wiki/ultima-online-wiki/technical/previous-publishes/1999-2/1999-publish-01-23rd-november/)** as per the UOSecondAge shard which is the golden standard for T2A accuracy and represents a logical cutoff for this era. Regarding the specific date: **Nov 23, 1999 (Publish 1)** - the game significantly changed as a "pre-patch" to UOR on this date, and UOSecondAge picks and chooses from this date based on QoL features, while keeping the gameplay accurate to what is widely known as the "T2A era". However this date is ~4 months before the actual UOR release date. ## Defensive wrestling Defensively wrestling as (eval+anat)/2 was added in [publish 16](https://uo.com/wiki/ultima-online-wiki/technical/previous-publishes/2002-2/publish-16-changes-and-bug-fixes-24th-july/) and should be gated behind !Core.LBR * "Unarmed “to-be-hit” changes (chance to get hit while unarmed is now the better of either Wrestling skill, or an average of Anatomy & Evaluate Intelligence)." ## Lumberjacking damage bonus Lumberjacking damage bonus was added in [UOR](https://uo.com/wiki/ultima-online-wiki/technical/previous-publishes/2000-2/2000-publish-05-27th-april/) ## Anatomy and LJ +10% GM bonus Anatomy/LJ +10% GM bonus was added in [pub 13](https://uo.com/wiki/ultima-online-wiki/technical/previous-publishes/2001-2/2001-publish-13-19th-august/), which was during UOTD. |
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| .config | ||
| .github | ||
| dev-docs | ||
| Distribution/Data | ||
| docs | ||
| Projects | ||
| .cursorrules | ||
| .editorconfig | ||
| .gitattributes | ||
| .gitignore | ||
| AGENTS.md | ||
| azure-pipelines.yml | ||
| CLAUDE.md | ||
| CODE_OF_CONDUCT.md | ||
| CONTRIBUTING.md | ||
| Directory.Build.props | ||
| FAQ.md | ||
| GEMINI.md | ||
| global.json | ||
| LICENSE | ||
| mkdocs.yml | ||
| ModernUO.sln | ||
| publish.cmd | ||
| publish.sh | ||
| README.md | ||
| rider-settings.zip | ||
| Rules.ruleset | ||
| SPONSORS.md | ||
| stylecop.json | ||
| THIRD-PARTY-NOTICES | ||
| version.json | ||
ModernUO

Ultima Online Server Emulator for the modern era!
Requirements
Supported Operating Systems
Required Frameworks
All Operating Systems
Windows
Development
Supported IDEs
Getting Started
- Install prerequisite requirements
- Clone this repository (or download the latest):
git clone https://github.com/modernuo/ModernUO.git
- Open
ModernUO.slnto start developing
Building/Publishing
- Run
./publish.cmd [release|debug (default: release)] [os] [arch (default: x64)]os- Supported operating systemsarchx64- Intel/AMD 64-bitarm64- ARM 64-bit (Windows not supported)
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
dnf install -y findutils libicu libdeflate-devel zstd libargon2-devel liburing-devel
Ubuntu, Debian, etc
apt-get update -y
apt-get install -y libicu-dev libdeflate-dev zstd libargon2-dev liburing-dev
OSX Requirements
brew install icu4c libdeflate zstd argon2
Running the Server
- Follow the publish instructions
- Run
ModernUO.exeordotnet ModernUO.dllfrom theDistributiondirectory
Troubleshooting / FAQ
- See FAQ
Want to sponsor?
Thank you for supporting us! You can find out how by visiting the sponsors page.
Collaborators
Thanks
- RunUO Team & Community
- Voxpire, the ServUO Team & Community
- Karasho, Jaedan and the ClassicUO Community