This school bus toy features a pull-out command center, flip-out ‘de-haunting’ cannons, rooftop scanners and space for 4 minifigures inside The portable toilet can change into a brown-tile spitting haunted ghost monster becoming interactive if viewed through the Hidden Side app Download the Hidden Side app, scan the model with a phone to bring the AR world to life, while playing the ghost-haunting adventures This construction set can be played with right out of the box, but for a full experience, a tablet/mobile phone is required (not included) The app is compatible with selected iOS/Android/mobile devices for better ghost hunting. Check compatibility at lego.com/devicecheck