About

OTadle is a web game platform offering daily challenges, created by Ayoub Yaqine. It brings together word, letter, number and card games that run directly in the browser.

How the project began

The algorithmic design of OTadle is an idea by Ayoub Yaqine, inspired by his experience with games such as Wordle, Nerdle, Mastermind and other deduction games. He imagined more complex variants that combine several mechanics and require different forms of reasoning.

The first version of the code was developed by Ayoub Yaqine. The project is now maintained by Codex.

The secret libraries behind the words

Every letter challenge is backed by years of linguistic research. OTadle does not choose from improvised word lists: its dictionaries were prepared from established research resources.

• French — Lexique 4.00: the database by Boris New, Christophe Pallier, Gauvain Schalchli, Jessica Bourgin and Manuel Gimenes powers the French lists. Lexique 4.00 and the derived files are used under the Creative Commons Attribution-ShareAlike 4.0 license, CC BY-SA 4.0.
• American English — SUBTLEX-US: the frequency corpus by Marc Brysbaert and Boris New helps prioritize words encountered in everyday language. The resource and derived files are used under a Creative Commons Attribution-ShareAlike license, CC BY-SA.
• Modern Standard Arabic — CAMeL: Arabic words are validated with CALIMA MSA R13 from the CAMeL Tools project, distributed under GNU GPL v2. Rankings use CAMeL Arabic Frequency Lists – MSA under CC BY-SA 4.0. Complementary CAMELMORPH data is available under CC BY 4.0, while its code uses the MIT license.

Icons, assets and licenses

• Glass Letter Tiles by Screaming Brain Studios are used under the CC0 1.0 license.
• Pixel Cards by Jfred are used under the CC0 1.0 license.
• Three.js is used under the MIT license.
• Several backgrounds, icons, number tiles and control keys were generated with ChatGPT Image 2.0 by OpenAI, under the terms applicable to OpenAI-generated content.