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Show HN: I built a new version of my fun spatial 3D online meeting app

Hacker News Thursday 17 September 2026, 12:57 UTC By pawelwentpawel 1 min read
Key Points

Hi HN!flat.social is a fun spatial online meeting app for remote teams and communities. It's largely built like a web multiplayer game, and the 3D virtual spaces are highly customisable with elements and activities (I recently added surfing!).Live demo to try it out: https://app.flat.social/f/demo-flatHere's a quick demo video: https://www.youtube.com/watch?v=GeinBNqL23sIt's a solo, bootstrapped project built with Three.js, LiveKit and Rapier for physics.

Hi HN!

flat.social is a fun spatial online meeting app for remote teams and communities. It's largely built like a web multiplayer game, and the 3D virtual spaces are highly customisable with elements and activities (I recently added surfing!).

Live demo to try it out: https://app.flat.social/f/demo-flat

Here's a quick demo video: https://www.youtube.com/watch?v=GeinBNqL23s

It's a solo, bootstrapped project built with Three.js, LiveKit and Rapier for physics. I built the first version during the pandemic and posted it here back then: https://news.ycombinator.com/item?id=31833415

I had a couple of months off this year, so I locked myself in an (almost) jungle house in Brazil and rebuilt it into what I've always wanted it to be.

Would love to hear what you think!

Comments URL: https://news.ycombinator.com/item?id=49740047

Points: 4

# Comments: 0

Three.js (ORG) LiveKit (PERSON) Rapier (ORG) Brazil (LOCATION) https://news.ycombinator.com/item?id=49740047 Points (PERSON)
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