Sounds like multiple chat rooms on a CloudDB or a FirebaseDB How do you create separate chat rooms? - #2 by SteveJG
I guess this depends on your card game and if you keep track of how many users are in the room. I guess you can do it.
Friends use a variation of this tutorial to play board games. How to: Roll Six 🎲 and Share the Roll using a CloudDB
Something similar can be done with your card game. With appropriate coding, more than five participants can be directed to additional 'playing rooms'. You just have to code the app to do it. ![]()