It says it uses ActivityPub, so yes, interoperable. Though Mastodon has its own quirks and doesn’t line up neatly with the protocol.

Thanks for the recommendation. I haven’t played Pokemon in over a decade, and from what I’ve read here that probably will not change. However, Monster Sanctuary may be worth checking out.

Why would you join when you can just follow the accounts that interest you on it from Lemmy or Mastodon/Pleroma/Akkoma/etc ???