Tenhou English UI is a Chrome add-on that allows users to change the UI text on the Tenhou HTML5 Web Client from Japanese to English. This add-on provides a convenient solution for players who are not fluent in Japanese but still want to enjoy playing Tenhou.

It's worth noting that the Tenhou English UI add-on is specifically designed for the HTML5 Web Client and will not work with the Flash client. Additionally, the add-on has received contributions from various individuals, including ApplySci and Dimitrieh, who have made significant contributions to its development. Special thanks are also given to TrollOfNova, Starfire, Kraków Chombo Club, and kvaps for their contributions to the add-on.

Overall, Tenhou English UI provides a valuable solution for non-Japanese-speaking players who want to enjoy playing Tenhou in their preferred language. With its easy installation and support for multiple languages, this add-on enhances the accessibility and user experience of the Tenhou HTML5 Web Client.