The Tenhou UI Translator is a Firefox extension designed to enhance the gaming experience for users of Tenhou and Ron2 by providing a multilingual interface. This tool allows players to enjoy the games in their preferred languages, including English, French, Vietnamese, Polish, and Spanish. It features a user-friendly interface that updates the original Tenhou plugin, making it accessible for a broader audience.

In addition to language support, the extension offers custom tilesets that are visually enhanced, featuring Western numbers and letters or brighter colors for better readability. After installation, users can easily access the updated interface by navigating to the respective game websites. This extension is subscription-based and aims to improve the educational and reference aspects of the gaming experience.