Fans of virtual reality and video games love the amazing LEGO® Hidden Side universe, where physical and digital worlds meet to provide an incredible, single or multiplayer augmented reality (AR) play experience. This LEGO Hidden Side Mystery Castle (70437) playset combines a buildable LEGO model with an app, so interaction with the model triggers events in a digital world.Digitally interactive ghost-hunting toyThe mystery castle springs to life when viewed through a smart device with the LEGO Hidden Side AR app. Children then get to explore, solve mysteries, hunt ghosts and battle boss ghost The Maw in an exciting digital world. The possessed castle model also folds out, setting the scene for action-packed role play with the Jack, Parker, Vaughn, Nehmaar Reem and 2 Shadow-Walker minifigures.An ever-evolving digital play experienceThe LEGO Hidden Side universe is set in the fictional town of Newbury, where ghosts haunt people and buildings. The AR play experience is constantly enhanced through new content, characters and special events.This LEGO® Hidden Side building kit combines the open creative play of LEGO building toys with digital play for an immersive single or multiplayer augmented reality (AR) experience. Perfect for kids aged 9 and up.What’s in the box? A digitally interactive LEGO® Hidden Side castle model with lots of manual features including an accessible observatory tower, plus Jack, Parker, Vaughn, Nehmaar Reem and 2 Shadow-Walker minifigures.The mystery castle model comes to life when viewed througha smart device equipped with the free LEGO® Hidden Side AR app. Kids then get to solve mysteries, find items and hunt ghosts in a haunted digital world.Looking for an ideal birthday or any-other-day gift for kids aged 9 and up? This action-packed LEGO® Hidden Side playset is a great gift idea for LEGO builders and fans of virtual reality and video games.When built, this LEGO® Hidden Side Mystery Castle (70437) augmented reality playset measures over 13" (34cm) high, 12" (31cm) wide and 10" (27cm) deep.Battery-free building toy. The Hidden Side AR app is compatible with selected iOS and Android devices. Please check compatibility at www.LEGO.com/devicecheck. Children should ask parents' permission before going online.Getting started with this LEGO® Hidden Side augmented reality toy is child's play. You'll find easy-to-follow instructions in the box and online – so simply tear open the LEGO brick bags and let the fun begin!The LEGO® Hidden Side universe is set in thefictional town of Newbury, where ghosts haunt people and buildings. The augmented reality play experience is constantly enhanced through new content, ghosts and events.LEGO® Hidden Side toy construction sets meet the highest industry standards and quality criteria to ensure that the bricks and pieces are consistent, compatible and continue to connect and pull apart easily every time.At the LEGO Group, we drop, heat, crush, twist and analyze our building bricks and pieces to ensure that every LEGO® Hidden Side playset meets the highest global safety and quality standards.