The nice thing about WebAudio is that it has spatial audio built into it. It’s really pretty trivial to implement basic spatialisation. That said you generally want a fiddly layer of manual management on top.

https://developer.mozilla.org/en-US/docs/Web/API/PannerNode

If we're posting playful town-style meeting spaces with cute animals, can't forget about this one: https://pony.town/ (2016)

BABSCon used it this year, and tbh I think it went extremely well: https://twitter.com/ponytownteam/status/1379378405557297157

Pony Town is a classic! It's crazy how popular it is for how sparse the featureset is, I guess it's a testament to the value proposition of sites like this.

Also Mibo: https://getmibo.com/

Also https://workadventu.re/