Basically c/chat + c/gaming. Anything that increases socializing is good especially considering loneliness is on the rise in modern times.
The Lemmyverse chess event just ended https://lemmy.ca/post/292674 which is the most collaborative fedi gaming thing I’ve heard of.
Lemmygrad might have a video gaming together thing too.
List what multiplayer games you’re willing to play with other Fedizens.
Best i found is https://social.tchncs.de/@illunaminetest, (https://illuna-minetest.tk/)
which isn’t lemmy, but they at least have a fediverse promo acct. If we get a few lemmyverse players on their server, eventually someone could reach out and get them to make a lemmy sub.
or just make an unofficial sub, since creating community is the goal
!minecraft@lemmy.ca