Bi-weekly Small Cluster Exploration event today, going around worlds, checking whatever event is active at the time and messing around with ingame world building tools. Cluster Game Jam starts next week so some new worlds are out.

>What's Cluster?
Japanese social VR platform, mix of VRC, Altspace and RecRoom. Supports VRM avatars, FBT and building of simple worlds directly in game. Has very good web frontend. Expect Engrish in menus.

>How to join?
Just register account at https://cluster.mu (Gmail or Twitter is easiest way to register for gaijin), verify your mail to enable uploads and upload any standard VRM avatar. You can easily convert your VRC base with UniVRM tools or grab one of many free VRM avatars on Booth, instructions here https://clusterhelp.zendesk.com/hc/en-us/categories/4411636965529-Create-an-avatar and then just wait for event link to be posted. Game has to be closed for direct join links to work.

>Will it run on my Google Cardboard with Wii Motes and 4 Kinects?
No but it runs on anything supporting SteamVR, standalone Quest, desktop and even phones but good luck joining most worlds on phone or Quest (still usable for just chatting). Game respects SteamVR settings of trackers so make sure you have them assigned to correct position (waist, right foot, left foot).

>When?
Saturday, 6-7PM GMT.

>More info?
Non-JP population is small but game itself has plenty of players and they're more than happy to show everyone around, there's persistent world chatbox so machine translation fueled discussion isn't uncommon. World creation SDK is fully open source, relatively powerful (think halfway between SDK2 and UDON) and offers great documentation with tons of guides (all in moonspeak).
You can directly stream images, PDFs, videos, music or even webcast your screen to players in worlds so bring some memes. And yes, there's mahjong.

>How to get my screenshots?
They're saved to your gallery on webpage.