I've sent you an invitation on GitHub. There are two repositories – mysteria-server (backend) and mysteria-game (frontend). You need to switch to the branch named "add-ai", which contains the latest version. The database is running on Supabase, where I can also invite you, or you can use your own database created from the scripts — but I'm not sure if all the necessary scripts are included in the repositories. If anything is unclear, feel free to reach out.
I’d also like to help out with development! I’ve had a go at pulling down the repos and trying it locally with my own Supabase project. Unfortunately it does look like the script is not in the repo, so couldn’t get it working.
I’ve made a Github issue on the mysteria-server repo detailing the problem.