As long as they credit me, sure.
I don't take credit for the card game itself - I only take credit for the units I've made and the addon itself. If someone wants to create their own card game similar to QCardWars in Tabletop Simulator, that's fine (because QCW is based on many other games, and is not an original idea that I take credit for). But if someone actually *copies* all the units from QCW I've created, then it's better if they credit me and toobeduge.