LEGO Hidden Side 70437 Mystery Castle

LEGO set 70437, Mystery Castle, depicts a haunted castle within the Hidden Side theme. Released in 2020, it includes 1035 pieces and belongs to the theme’s paranormal setting, where physical building is paired with ghost themed storytelling.

Mystery Castle is a prominent location based model in Hidden Side. Rather than focusing on a vehicle or a small urban scene, it presents a haunted fortress that suits the theme’s ghost hunting stories, supernatural opponents and eerie locations.

Jackson, Jack Davids, Shadow Walker with Helmet, Nehmaar Reem and Vaughn Geist. The build is centred on a castle silhouette, with areas for character placement and play scenes.

It is relevant to Hidden Side collectors looking for a central display setting, and to builders who prefer fantasy architecture with a darker tone. Within the theme, it stands out through its castle subject and through the mix of heroes, antagonists and spectral figures gathered in one location.

Inventory of set 70437

The inventory of set 70437 lists 1,035 pieces, spare parts excluded: 337 different lots (one shape in one color) for 244 part shapes. The box also contains 27 spare parts, for small elements that are easy to lose.

Colors of set 70437

Main color: light bluish gray, making up 33% of the parts, followed by black (28%) and dark bluish gray (15%).

Part types

Most common parts in set 70437

215 of the 244 part shapes in this set have their own page on Setopedia, with their colors, element numbers and the other sets that use them. See all LEGO parts

Exclusive parts in set 70437

5 part shapes in set 70437 appear in no other set in the catalog, most often printed elements, stickers or molds specific to the model. If one gets lost, you will need to look for it individually, for example on BrickLink, rather than in another set. Counting colors, 9 lots in the set are not found in any other set.

Rebuilding set 70437 from another set

Share of the parts of set 70437 found in each of these similarly sized sets, counting shape, colour and quantity:

No similarly sized set goes above 37%: the model relies on a little-shared assortment, most of which has to be gathered piece by piece.

Size of set 70437 within its line

With 1,035 pieces, set 70437 ranks #2 out of 23 Hidden Side sets in our database, which have an average of 424 parts. Among the 490 sets released in 2020, it ranks #46. That is 2.4 times the average Hidden Side set size.