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

flat.social is a web-based 3D online meeting app for remote teams and communities, built using Three.js, LiveKit, and Rapier for physics. The app features customizable virtual spaces with elements and activities, including surfing, and allows users to interact with each other in a game-like environment. The app has been rebuilt from a previous version, which was posted on Hacker News in 2020.