I expected there to be some kind of Columns series server on Discord already, but it pretty hard insisted on me making my own, which I did here:

https://discord.gg/d728eAHaeG

I set it so that there would be no time limit for others joining. However, if someone else here already has a server, I would prefer to join that one instead rather than create another, duplicate one. Yet Discord seemed to present my own server as the only option for this, though given relatively few players on here, mine might very well be the only one... I'm just anxious to find out which it is (or even somewhere in between) and figure out what to do with that... I think Columns overall hasn't gotten nearly the attention it deserves versus Tetris.