Yes, I could see game forum communications being an avenue. You can either go text or live chat. Ive used Overwolf before playing Battlefield Bad Company II. It would be relatively easy to have those recorded or logged from the spooky folk standpoint.
I wonder what sort of multiplayer games all these folks are into from the standpoint of it being a communication option?
Then there’s the Palpatine’s Revenge dark-web chats.