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A website for playing the ancient Mesopotamian board game, The Royal Game of Ur!

This repository holds the client code for The server code for can be found in the RoyalUrServer repository. was created based upon the ancient Sumerian board game, The Royal Game of Ur, in the British Museum. The original board game can be dated to 2600 BC, and was discovered in a royal tomb in the city-state of Ur in ancient Mesopotamia. Learn more about the game on Wikipedia, or watch a fun match between Tom Scott and Irving Finkel on YouTube!

How much of the game is luck?

The answer is, less than you might think!

If you'd like to learn more about strategy and the role of luck in The Royal Game of Ur, check out our efforts over in the RoyalUrAnalysis repository. In that repository we're currently undergoing efforts to use our computers to help us better understand the strategy and luck involved The Royal Game of Ur.

Join the community!

If you're interested in The Royal Game of Ur, we have a Discord and a Reddit that you might want to check out! These are both good places to talk about the game, its strategies, and see cool board recreations that people have made! The Discord is also a great place to find strong opponents to challenge! We also post updates about the game on our Twitter.

🖥️ Compilation

This project uses Babel to transpile all Javascript to a single ES5 compatible file, as well as a Python script to generate the resource files needed for the site.

The following commands will compile the site to ./dist:
./ release -- Full clean compilation, with minified JS.
./ dev -- No minification, no cleaning of ./dist folder.

If you run into ./res file related issues during compilation, try updating your ./res folder.

To update the contents of your ./res folder as the resources used by RoyalUrClient change, simply delete it and let the compilation script download it again for you.

🛠️ Project Architecture

A summary of the architecture of the client-side of can be found in

💾 Resource Files

The image, audio, and annotation assets required by the project are not actually stored in git, due to git's poor handling of binary files. Instead, the script to compile the site will automatically download the resources for you from

📝 License

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

You should have received a copy of the GNU General Public License along with this program. If not, see


A massive thanks to all contributors to the RoyalUrClient project!