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.
I would love to play Doom II. I don’t play a fun and classic deathmatch for quite some time.