You will find the SpielBoxx in the Kurpark at Platz Nass (near the boules court).
It invites you to use the Kurpark for fun and games, various play and sports equipment can be borrowed free of charge, for example boules balls for the boules court next door.
For other games (Viking chess, family tennis, frisbee, running stilts, skipping ropes), the meadow areas in the spa park can be used.
You only need the "chayns" app to borrow the equipment and then you're ready to go! You can find more information
here...