Joy isn't a break from faith. It's part of it. In Nehemiah 8, God's people heard His Word and started weeping.
Their leaders told them to stop crying, throw a feast, and share food with anyone who had none, because "the joy of the Lord is your strength." Hours before the cross, Jesus told His friends He wanted His joy to be in them, and their joy to be full (John 15:11). Not a joy they had to earn, but one that comes from being loved. That's the kind of joy this deck is built for.
It makes room at the table. It sits right next to the hard stuff without pretending the hard stuff isn't there. And it grows best the way it always has: together. So yes, it's a game. But a room full of people laughing together, with God in the middle of it? That's holy ground too.