Mystery Castle is a standout set in the Hidden Side theme.
Mystery Castle is a standout set in the Hidden Side theme. Its imposing structure, combined with the augmented reality features, offers a unique play experience that blends physical building with digital interaction.
This set is perfect for LEGO enthusiasts who enjoy a spooky theme with interactive play. The building experience is engaging, and the finished model makes a great display piece or interactive playset.
Skip this if you prefer straightforward builds without digital elements or are not a fan of the Hidden Side theme. Consider the Monster Fighters theme or more traditional castle sets for a different experience.
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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 toy
The 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 experience
The 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.
Weapon Sword (Uru...
Flag 2 x 2 Square...
Rock 1 x 1 Crysta...
Slope Curved 2 x ...
Slope Curved 2 x ...
Animal Body Part,...
Brick Arch 1 x 3 ...
Brick Arch 1 x 3 ...
Brick Arch 1 x 5 ...
Brick Arch 1 x 5 ...
Brick 1 x 1 x 3
Brick 1 x 1 x 3
Tile 2 x 2 Corner
Slope Curved 2 x ...
Slope Curved 2 x ...
Tile Special 1 x ...
Brick Arch 1 x 6 ...
Fence Spindled 1 ...
Tile Round 2 x 2 ...
Slope 45° 2 x 1 T...
Plate Special 1 x...
Plate Special 1 x...
Minifig Neckwear ...
Slope 45° 2 x 1 w...
Slope 45° 2 x 1 w...
Wedge Plate 4 Stu...
Wedge Plate 4 Stu...
Brick Arch 1 x 8 ...
Plate Special Rou...
Plate Special Rou...
Windscreen 6 x 10...
Fence Ornamented ...
Brick Special 1 x...
Tile Round 1 x 1 ...
Fence Spindled 4 ...
Tile Special 2 x ...
Slope 45° 1 x 1 x...
Brick 1 x 2 x 3 w...
Plate Round Half ...
Brick 2 x 2 Corner
Plant, Leaves 6 x 5
Plate 2 x 2 Corner
Plate 2 x 2 Corner
Tile 1 x 4 with G...
Tile 1 x 4 with P...
Weapon Spear Tip ...
Slope Inverted 75...
Wedge Plate 3 x 3...
Brick 1 x 1 x 5 w...
Brick 1 x 2 x 5 w...
Cylinder Half 2 x...
Tile Special 2 x ...
Wedge 3 x 3 Facet
Plate Special 2 x...
Tile Round 1 x 1 ...
Plate Special 1 x...
Weapon Crossbow a...
Plate Special 1 x...
Brick Special 1 x...
Plate Round 2 x 2...
Plate Round 2 x 2...
Plate Round 2 x 2...
Wedge Plate 2 x 2...
Tile Special 2 x ...
Tile Special 2 x ...
Slope 45° 2 x 1 w...
Slope 45° 2 x 1 w...
Door Frame 4 x 4 ...
Brick 2 x 4
Brick 2 x 4
Brick 2 x 3
Brick 2 x 3
Brick 2 x 2
Brick 1 x 2
Brick 1 x 2
Brick 1 x 2
Brick 1 x 2
Brick 1 x 2
Window 1 x 2 x 2 ...
Window 1 x 2 x 2 ...
Brick 1 x 1
Brick 1 x 1
Brick 1 x 6
Brick 1 x 4
Brick 1 x 4
Brick 1 x 4
Brick 1 x 4
Stairs 7 x 4 x 6 ...
Brick Special 1 x...
Brick Special 1 x...
Rock 1 x 1 Jewel ...
Plate 2 x 4
Plate 2 x 4
Plate 2 x 4
Plate 2 x 4
Plate 2 x 4
Plate 2 x 3
Plate 2 x 2
Plate 2 x 2
Plate 1 x 2
Plate 1 x 2
Plate 1 x 2
Brick Special 1 x...
Brick Special 1 x...
Brick Special 1 x...
Plate 1 x 1
Panel 3 x 4 x 6 w...
Plate 4 x 10
Plate 4 x 4
Plate 2 x 8
Tile Special 2 x ...
Tile Special 2 x ...
Plate 6 x 8
Slope 18° 4 x 2
Slope 45° 2 x 4
Bar 4L (Lightsabe...
Slope 45° 2 x 2
Slope 45° 2 x 2
Slope 45° 2 x 1 w...
Slope 45° 2 x 1 w...
Slope 45° 2 x 2 D...
Slope 45° 2 x 2 D...
Panel 4 x 4 x 6 Q...
Brick Arch 3 x 6 ...
Brick Round 1 x 1...
Brick Round 1 x 1...
Brick Round 1 x 1...
Brick Round 1 x 1...
Tile 2 x 2 with G...
Tile 2 x 2 with G...
Tile 2 x 2 with G...
Tile 1 x 2 with G...
Tile 1 x 2 with G...
Tile 1 x 2 with S...
Tile 1 x 2 with S...
Tile 1 x 1 with G...
Tile 1 x 1 with G...
Plate Special 1 x...
Technic Plate 2 x...
Technic Link 1 x ...
Plate Special 1 x...
Plate Special 1 x...
Plate Special 1 x...
Technic Gear 12 T...
Brick 1 x 2 x 2 w...
Brick 1 x 2 x 2 w...
Brick Special 1 x...
Slope 33° 3 x 2
Roof / Tower 6 x ...
Picket Fence 1 x ...
Plate Special 2 x...
Plate Special 2 x...
Plate 6 x 14
Plate 1 x 8
Plate Special 1 x...
Plate Special 1 x...
Tower Roof 2 x 4 ...
Tile Special 1 x ...
Brick 1 x 3
Brick 1 x 3
Brick 1 x 3
Plate 1 x 3
Plate 1 x 3
Plate 1 x 3
Fence Lattice 1 x...
Brick Arch 1 x 4
Brick Arch 1 x 4
Slope Inverted 45...
Slope Inverted 45...
Slope Inverted 45...
Slope Inverted 45...
Slope Inverted 45...
Plate 1 x 6
Plate 1 x 6
Plate 1 x 6
Slope Inverted 45...
Slope 65° 2 x 2 x...
Slope 65° 2 x 2 x...
Turntable 2 x 2 P...
Turntable 2 x 2 P...
Technic Brick 1 x...
Technic Plate 2 x...
Plate 1 x 4
Plate 1 x 4
Plate 1 x 4
Plate 1 x 4
Plate 1 x 4
Equipment Candles...
Wave / Flame Smal...
Plate 2 x 6
Plate 2 x 6
Hinge Brick 1 x 4...
Hinge Brick 1 x 4...
Hinge Brick 1 x 4...
Hinge Brick 1 x 4...
Equipment Brush /...
Equipment Cup / M...
Hinge Brick 1 x 2...
Hinge Brick 1 x 2...
Brick Round 2 x 2...
Cone 2 x 2 x 2, O...
Cone 2 x 2 x 2, O...
Cone 4 x 4 x 2, A...
Plate Round 2 x 2...
Plate Round 2 x 2...
Plate Round 2 x 2...
Animal Body Part ...
Animal Body Part ...
Gate 1 x 4 x 9 Ar...
Wedge Plate 3 x 2...
Wedge Plate 3 x 2...
Wedge Plate 3 x 2...
Wedge Plate 3 x 2...
Slope 75° 2 x 1 x...
Plate Special 1 x...
Brick Arch 1 x 3
Plate Special 1 x...
Plate Special 1 x...
Bracket 3 x 2 - 2...
Rock Panel 2 x 4 x 6
Wedge Plate 6 x 4...
Wedge Plate 6 x 4...
Plate Special 1 x...
Plate Special 1 x...
Bar 1L with Clip ...
Animal Body Part,...
Slope 30° 1 x 1 x...
Slope 30° 1 x 1 x...
Slope 30° 1 x 1 x...
Wedge Plate 6 x 3...
Wedge Plate 6 x 3...
Technic Axle 8 wi...
Glass for Window ...
Light Cover 1 x 1...
Cone 1 x 1 [Top G...
Cone 1 x 1 [Top G...
Cone 1 x 1 [Top G...
Plate Round Corne...
Window 1 x 2 x 2 ...
Bar 7 x 3 with Do...
Plate Round 4 x 4...
Brick Special 1 x...
Slope 65° 2 x 1 x 2
Slope 65° 2 x 1 x 2
Slope 65° 2 x 1 x 2
Brick Special 1 x...
Window 1 x 2 x 2 ...
Door Frame 1 x 4 ...
Glass for Window ...
Door 1 x 4 x 6 Ba...
Plate Special 10 ...
Plate Special 1 x...
Wedge Plate 6 x 6...
Hinge Brick 2 x 2...
Hinge Brick 2 x 2...
Hinge Brick 2 x 2...
Plate Round 1 x 1...
Plate Round 1 x 1...
Turntable 4 x 4 S...
Container Box 2 x...
Plate Special 4 x...
Technic Pin Conne...
Leg Skeleton
Door 1 x 4 x 6 Ro...
Weapon Lightsaber...
Equipment Telesco...
Equipment Telesco...
Technic Brick 1 x...
Technic Brick 1 x...
Plate Special 1 x...
Technic Pin with ...
Tile 1 x 6 with G...
Wedge Plate 4 x 8...
Sticker Sheet 2 f...
Sticker Sheet 1 f...
Hinge Plate 1 x 4...
Brick Round Corne...
Brick Round Corne...
Brick Round Corne...
Brick Round Corne...
Plate Round 1 x 1...
Plate Round 1 x 1...
Slope 30° 1 x 2 x...
Slope 30° 1 x 2 x...
Slope 30° 1 x 2 x...
Tile 2 x 4 with G...
Brick Special 1 x...
Panel 3 x 3 x 6 C...
Panel 3 x 3 x 6 C...
Wedge 2 x 2 Facet
Wedge 2 x 2 Facet
Animal Body Part,...
Bar 3L
Plate Special 1 x...
Creature Body Par...
Plate Special 10 ...
Window 1 x 2 x 2 ...
Plate 2 x 14
Plate Special 4 x...
Plate Special 6 x...
Chain 6L [5 Links]
Plate Special 1 x...
Brick Round 2 x 2...
Brick Arch 1 x 6 ...
Panel 1 x 2 x 1 w...
Slope Curved 4 x ...
Slope Curved 4 x ...
Equipment Bottle
Bucket 1 x 1 x 1
Bucket 1 x 1 x 1 ...
Brick and Axle Se...
Plate Round 2 x 2...
Slope 75° 2 x 2 x...
Bracket 1 x 2 - 2...
Bracket 1 x 2 - 1...