"I was super excited to buy the hidden side sets. My son and I built the set and went to download the app which only works on my iPad (check phone compatibility before you buy the set). The first issue we had was that the scanning of the set only works in portrait mode and not in landscape which was tricky to hold the iPad and try to scan and tap to shoot the ghosts. The set is great, but the app lets the experience down, I hope there will be some app updates in the future to improve the experience."