Nathalie Half founded Israeli startup Museloop when her children stopped joining her on her museum visits. Now when they walk through the exhibits, the app plays “I Spy” or “Spot the difference” or makes a jigsaw puzzle of the artwork or starts a trivia game. Some museums give incentives to the winner.
http://www.timesofisrael.com/israeli-start-up-brings-tech-to-museums-for-fun-games/