How many pieces does the LEGO Mystery Castle (70437-1) have?

The LEGO Mystery Castle set (70437-1) contains 1035 pieces. It was released in 2020 as part of the LEGO Hidden Side theme.

How can I find missing parts for LEGO set 70437-1?

On BrickMissing you can check which parts from the LEGO Mystery Castle (70437-1) you already own. Add your LEGO collection and we'll show exactly which of the 1035 pieces you're missing and which you already have.

Can I build the LEGO Mystery Castle with parts I already have?

Use BrickMissing's free parts checker to find out. Add LEGO sets you own to your collection and we'll cross-reference all 1035 parts to show your buildability percentage and which specific pieces you still need.

What theme is the LEGO Mystery Castle from?

The LEGO Mystery Castle (70437-1) belongs to the LEGO Hidden Side theme. You can browse all Hidden Side sets on BrickMissing to find more sets from this theme.

Mystery Castle

70437-1 Hidden Side 2020 1035 parts 7.4% catalog rarity Advanced

Investigate the phenomena in Newbury with the LEGO Hidden Side Mystery Castle (70437-1) set, comprising 1035 pieces. This digitally interactive ghost-hunting toy combines a physical castle model with an augmented reality (AR) app experience, bringing the structure to life. The castle model folds out, utilizing hinge plates for its transformation, setting the stage for role play with Jack, Parker, Vaughn, Nehmaar Reem, and two Shadow-Walker minifigures. When viewed through a smart device, the AR app allows explorers to delve into a digital world, solve mysteries, hunt ghosts, and confront boss ghost The Maw. The set continually evolves with new digital content and characters, enhancing the ongoing adventures within the castle walls.

Parts Inventory

🧱 1035 parts

Showing the first 12 rows of the parts list (1035 pieces in total). The full list loads automatically.

Color	Qty	LEGO price each
Pearl Titanium	2×	€0,19 View at LEGO → View
Black	1×	Check price → View
Trans-Light Blue	1×	€0,22 View at LEGO → View
Dark Brown	1×	€0,06 View at LEGO → View
Light Bluish Gray	2×	€0,06 View at LEGO → View
Black	5×	€0,12 View at LEGO → View
Light Bluish Gray	4×	€0,21 View at LEGO → View
Black	2×	€0,21 View at LEGO → View
Black	2×	€0,28 View at LEGO → View
Light Bluish Gray	14×	€0,28 View at LEGO → View
Black	1×	€0,13 View at LEGO → View
Light Bluish Gray	4×	€0,13 View at LEGO → View

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Catalog rarity

How common are the parts in Mystery Castle?

7.4%Moderate rarity

more commonless common

25 of 337 recorded part+color combinations appear in 3 or fewer sets in our catalog. This does not measure replacement availability or price.

Theme average

7.4%

All sets

6.7%

Least common in our catalog

Windscreen 6 x 10 x 4 Curved · Trans-Brown · only this set in our catalogTower Roof 2 x 4 x 4 Half Cone Shaped · Black · only this set in our catalogMinifig Head Nehmaar Reem, Large Silver… · Light Aqua · only this set in our catalog

How we calculate this →