How many pieces does the LEGO Welcome to the Hidden Side (70427-1) have?

The LEGO Welcome to the Hidden Side set (70427-1) contains 189 pieces. It was released in 2020 as part of the LEGO Hidden Side theme.

How can I find missing parts for LEGO set 70427-1?

On BrickMissing you can check which parts from the LEGO Welcome to the Hidden Side (70427-1) you already own. Add your LEGO collection and we'll show exactly which of the 189 pieces you're missing and which you already have.

Can I build the LEGO Welcome to the Hidden Side 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 189 parts to show your buildability percentage and which specific pieces you still need.

What theme is the LEGO Welcome to the Hidden Side from?

The LEGO Welcome to the Hidden Side (70427-1) belongs to the LEGO Hidden Side theme. You can browse all Hidden Side sets on BrickMissing to find more sets from this theme.

Welcome to the Hidden Side

70427-1 Hidden Side 2020 189 parts 13.5% catalog rarity Easy

The LEGO Hidden Side 70427-1 Welcome to the Hidden Side set introduces the augmented reality universe of Newbury, a fictional town where physical and digital ghost-hunting merge. This 189-piece model centers on a brick-built spectral portal structure, featuring interactive rotating elements that activate distinct events within the free LEGO AR app. Viewing the set through a smart device reveals a ghostly world, enabling players to hunt apparitions and confront the boss ghost, Lady E. The set includes four minifigures, ready for exploration and mystery-solving within this ever-expanding digital realm. The distinct portal frame, constructed from various plate and brick elements, forms the central hub for triggering these AR interactions and exploring the haunted Newbury landscape.

Parts Inventory

🧱 189 parts

Showing the first 12 rows of the parts list (189 pieces in total). The full list loads automatically.

Color	Qty	LEGO price each
Black	1×	€0,50 View at LEGO → View
Black	4×	€0,12 View at LEGO → View
Black	3×	€0,28 View at LEGO → View
Light Bluish Gray	2×	€0,29 View at LEGO → View
Dark Bluish Gray	1×	€0,07 View at LEGO → View
Black	2×	€0,07 View at LEGO → View
Light Bluish Gray	2×	€0,13 View at LEGO → View
Dark Bluish Gray	1×	€0,13 View at LEGO → View
Yellowish Green	1×	Check price → View
Yellowish Green	2×	Check price → View
Dark Bluish Gray	2×	€0,27 View at LEGO → View
Dark Bluish Gray	1×	€0,06 View at LEGO → View

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Catalog rarity

How common are the parts in Welcome to the Hidden Side?

13.5%High rarity

more commonless common

14 of 104 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

Lower Body, Ghost · Trans-Clear · only this set in our catalogLower Body, Ghost · Trans-Clear · only this set in our catalogMinifig Head Ghost Waylon, · Trans-Yellow · only this set in our catalog

How we calculate this →