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% repair risk 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

Part	Color	Qty	LEGO price each
Lamp Post 2 x 2 x 7 with 4 Base Flutes 11062	Black	1×	€0,50 View at LEGO → View
Bar Holder with Clip 11090	Black	4×	€0,12 View at LEGO → View
Brick Arch 1 x 5 x 4 [Continuous Bow, Raised Underside Cross Supports] 14395	Black	3×	€0,28 View at LEGO → View
Panel 1 x 4 x 2 with Side Supports - Hollow Studs 14718	Light Bluish Gray	2×	€0,29 View at LEGO → View
Tile Round 2 x 2 with Bottom Stud Holder 14769	Dark Bluish Gray	1×	€0,07 View at LEGO → View
Tile Round 2 x 2 with Bottom Stud Holder 14769	Black	2×	€0,07 View at LEGO → View
Slope Curved 2 x 2 x 2/3 15068	Light Bluish Gray	2×	€0,13 View at LEGO → View
Panel 1 x 4 x 1 with Rounded Corners [Thin Wall] 15207	Dark Bluish Gray	1×	€0,13 View at LEGO → View
Plate Special 1 x 2 with Three Teeth [Tri-Tooth] 15208	Yellowish Green	1×	Check price → View
Tile Special 1 x 2 with Two Vertical Teeth / Tooth 15209	Yellowish Green	2×	Check price → View
Brick Arch 1 x 6 x 2 - Thin Top without Reinforced Underside [New Version] 15254	Dark Bluish Gray	2×	€0,27 View at LEGO → View
Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) 15573	Dark Bluish Gray	1×	€0,06 View at LEGO → View

I already have an account

Repairability

Can you fix Welcome to the Hidden Side if a piece goes missing?

13.5%High repair risk

easy to fixguard this box

14 of the 104 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

Lower Body, Ghost · Trans-Clear · only this setLower Body, Ghost · Trans-Clear · only this setMinifig Head Ghost Waylon, · Trans-Yellow · only this set

How we calculate this →