With LEGO Hidden Side 70418 J.B.’s Ghost Lab, you can immerse kids in a wonderful augmented reality play experience. In order to provide a completely interactive experience, Hidden Side combines a LEGO model with a game software. This results in an exciting new way to play with LEGO toys. To bring the model to life, download the Hidden Side app and scan it with a phone. Things happen in the app as a result of user interaction with the model. This LEGO Hidden Side kit expands the possibilities for LEGO play by constantly adding new puzzles to solve, objects to hunt down, ghosts to slay, and challenging boss ghosts to face off against! For hours of imaginative play, J.B.’s Ghost Lab has a tonne of amazing technological details and scientific tools that are inspired by the actual world.