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% repair risk 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

Part	Color	Qty	LEGO price each
Weapon Sword (Uruk-hai) 10050	Pearl Titanium	2×	€0,19 View at LEGO → View
Flag 2 x 2 Square, Flat Clip Edge [Thick Clips] 11055	Black	1×	Check price → View
Rock 1 x 1 Crystal 4 Point 11127	Trans-Light Blue	1×	€0,22 View at LEGO → View
Slope Curved 2 x 1 No Studs [1/2 Bow] 11477	Dark Brown	1×	€0,06 View at LEGO → View
Slope Curved 2 x 1 No Studs [1/2 Bow] 11477	Light Bluish Gray	2×	€0,06 View at LEGO → View
Animal Body Part, Horn (Cattle) / Tentacle / Vine / Branch / Tongue - Long 13564	Black	5×	€0,12 View at LEGO → View
Brick Arch 1 x 3 x 3 [Gothic] 13965	Light Bluish Gray	4×	€0,21 View at LEGO → View
Brick Arch 1 x 3 x 3 [Gothic] 13965	Black	2×	€0,21 View at LEGO → View
Brick Arch 1 x 5 x 4 [Continuous Bow, Raised Underside Cross Supports] 14395	Black	2×	€0,28 View at LEGO → View
Brick Arch 1 x 5 x 4 [Continuous Bow, Raised Underside Cross Supports] 14395	Light Bluish Gray	14×	€0,28 View at LEGO → View
Brick 1 x 1 x 3 14716	Black	1×	€0,13 View at LEGO → View
Brick 1 x 1 x 3 14716	Light Bluish Gray	4×	€0,13 View at LEGO → View

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Repairability

Can you fix Mystery Castle if a piece goes missing?

7.4%Moderate repair risk

easy to fixguard this box

25 of the 337 part+color combinations in this set appear in 3 or fewer sets ever made. Lose one of those and a replacement is very hard to find.

Theme average

7.4%

All sets

6.7%

Hardest to replace

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

How we calculate this →