I’ve got an exciting thing to announce today, Canvas — Lemmy’s r/Place!
We need to get our own traditions over here in the Threadiverse, why not start off with our own r/Place
This weekend, we will open up a canvas to all Lemmy users, each user will be able to place 1 pixel every minute. This event will last 72 hours, starting midnight EST on the 4th and ending at 11:59pm EST on the 6th
Seems like onboarding will be handled by a bot, so I imagine it shouldn't really matter what instance you're using. As for instances that are "Joining in", I think that just refers to Admins for those instances promoting the event.