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Oh you mean nested rooms? That’s just normal rooms with a different organization. I think there is one XMPP proposal for them but I don’t know of any server that implements it (they are unneeded since you can just create temporary chatrooms, same as in IRC) and then you need client support, of which apparently only Movim and Dino are working on it yeah.

channels within servers
Oh that is like the second most common thing on XMPP! It’s rooms/chats/conversations on servers/conferences/salons, etc. Like, come on, even IRC has that and that was made before I was born.
The one thing that’s complex, or at least bad in the UI I’ve seen for most XMPP clients, is that searchability of rooms is not very good. Like, discoverability is, but to my knowledge there’s no way to actually filter for rooms based on a keyword, you either get the whole roomlist for a server or nothing.

Pretty much anything so long as Palworld doesn’t have 1.- a backbone and 2.- a dictionary at hand. Because it is as simple as finding a picture of any of a long list of animals that can glide, state the words “previous art” and they should be free from this ridiculous demand.
Mechanics that already exist in nature should not be copyrightable. Can you imagine if the first videogame company ever patented “character walking”?

It would make sense to require a company to release the code for players to host their own servers, which has been done by many games in the past. Not to continue to run it themselves.
That counts as “working state”, assuming the published code is reasonable to operate (it must be FOSS, or at least permit open modification and distribution; and it must run in a server with specs that’s reasonable to have at the time of game publication)
Oh yeah that already exists in XMPP, it’s called “Server spaces” and grouping can be done by admin or by room owners, but it’s experimental so there’s no direct way to know what servers or clients are using it or not.