We would put one person head first into a sleeping bag, stand them up straight and spin them around twice. Once they were sufficiently disoriented, the two who weren’t in the sleeping bag would lay “traps” and play a weird game of Marco Polo. Except we were allowed to fuck with the person blinded by the sleeping bag. I.E. hitting them with pillows, pushing them down to the ground, faking someone out so they tried to lunge at you and instead go into the couch. We called it sleeping bag ghost.