>>289992473
I tried it about a year ago, and it's much more geared towards vtuber style streaming instead of a metaverse. You're on a small flat plane with incredibly slow movement. You can spawn some props and markers and cameras. The environments are purely backdrops, no collisions, and there are only a few of them available. You can use custom avatars with FBT, but you have to upload them to niconico. Rooms have a player cap of 10, voice chat isn't spatialized, people speak in your head.

Wasn't that compelling to me but if you can speak jp might be interesting.