This game has a back-end and a front-end. Only The front-end part is on GitHub. The back-end is a REST API developped with Symfony4. The front-end is a javascript / jQuery web app. It is still in development, but the main features are to be tested.
It works! You can give it a try, and tell me about the gameplay and device compatibility. But if you want to make everything work (score registration, finish screen display), you'll need a back-end access. Actually, the Git repo is to me a version manager.