I like #Wordle, but one of the things that bothers me about it is that it's centralized, so that the New York Times can try to track you and push you into accepting arbitrary terms and conditions. But one of the benefits of centralized Wordle is that it makes it easy to make it a more social game; each day, people get the same word to guess as each other, and they can compare scores and celebrate or commiserate with each other.
But while centralization makes it easier, it isn't necessary for the social aspect.
Yesterday, I discovered #Reactle, a #webXDC app, which you can play in #DeltaChat with an email account, or in #Cheogram or #Monocles, with an #XMPP account, either in a chat with yourself, or in a chat with someone else or a group (but I think everyone in the world gets the same word on the same day, even if they're playing in different chats). Everyone in the chat gets to play separately, and their results (number of turns) are automatically shared with the chat, and you can share the more detailed grid of coloured squares if you want.
As I understand it, webXDC apps are designed to be offline-first, so as soon as you've got the game in a chat, you should be able to play it even without an internet connection. And there's a neat curated list of other webXDC apps at https://webxdc.org/apps/, some of which let you collaborate, adding events to a shared calendar, for example.
CC: @delta @cheogram @monocles