it is "broken windows" policy in action - you don't stop hide and seek in IKEA today, you end up with people shooting up heroin and engaging in various adult activities there tomorrow.
Anyway, how do you efficiently stop a good game? You spoil it (cue Dr.Evil laugh). In this case use NN to analyze video feeds to identify a hiding person and deploy a Roomba (i feel like our civilization is on the precipice of the epoch where "deploy a Roomba" will be the answer to almost any situation) to the vicinity of the hiding person where the Roomba will loudly announce presence of the hiding person.