From 2,997 active users across all lemmy instances at the beginning of June, the number increased to 52,797 by June 30th. Source.
An active user on Lemmy is "someone who has posted or commented on our instance or community within the last given time frame.” Source. That means lurkers are not counted as active users.
We’re really building something here!
The thing that would come to my mind would be game specific communities, like one for stellaris, another for the last of us, etc.
If I wouldn’t mind the work of moderating, I’d probably create one :)