Disclaimer: I haven't dug into it yet to see which ones are good or available to the public.

Looks like the one pictured above was a project called Hall of Games, but they were only up for a few months and then shut down in October.

I'm seeing lots of personal projects (no doubt people vibe-coding for fun). Here's one on reddit from 3 days ago:

There's a more polished-looking one on steam called Boxroom, but it seems to have mixed reviews.