it is… runescape but for tech conferences? hahahaha??? webrtc / works in the browser / appears to also include video chat and text chat / you also get a little pixel art avatar that walks around in a little pixel art world I ACTUALLY KIND OF LOVE THIS???
found out about it just now through https://www.eventbrite.com/x/dweb-meetup-2020the-state-of-the-decentralized-web-tickets-109884774318