Venture to the Hidden Side!
Build the Ghostly Portal

Uncover spooky secrets with 189 pieces and 4 minifigures! Join Jack and explore the haunted town of Newbury in this AR-enhanced adventure.

🏛 Hidden Side
Set #70427

Welcome to the Hidden Side

Welcome to the Hidden Side is a fantastic entry point into the innovative Hidden Side theme.

🏆 Best For: Younger LEGO enthusiasts interested in exploring augmented reality and ghost hunting. ⏱ 1.0 hr build 🧩 189 pcs 🎂 Ages 7+
★★★☆☆ 3.7 from 3 reviews

Fans appreciate the set's accessibility and introduction to the Hidden Side theme, especially its AR features. Some find the build too simple and the piece count low for the price, but overall it's considered a good starting point for the theme.

📝 Our Take

Welcome to the Hidden Side is a fantastic entry point into the innovative Hidden Side theme. This small set packs a punch with its interactive AR features and spooky charm, making it a great introduction to the blend of physical and digital play that defines the Hidden Side universe.

This set is perfect for kids aged 7+ and LEGO fans interested in exploring augmented reality. The build is quick and easy, making it accessible for younger builders, while the AR integration adds a unique and engaging play experience.

Skip this if you're looking for a complex building experience or a large display piece. For a more challenging build within the same theme, consider the Hidden Side Haunted High School 70425. If you're not interested in the AR features, other LEGO themes might offer better value for the piece count.

✨ New
BlockTalk

Ask BlockTalk about this set

AI assistant with full set data

Powered by AI
BlockTalk
BlockTalk
Hi! I'm BlockTalk, your LEGO expert. Ask me anything about the Welcome to the Hidden Side - building tips, investment potential, comparisons, or anything else!
Try asking:
How does the AR integration enhance the play experience with this set? What are the key features that make this set appealing to younger builders? How does this set compare to other sets in the Hidden Side theme in terms of value and playability? What are some creative ways to display this set with other LEGO Halloween or spooky-themed sets?

🧱 Building Experience

🧩
189
Pieces
1.0h
Build Time
📊
Beginner
Difficulty
📏
17cm × 22cm × 13cm
Dimensions
Build Highlights:
  • Simple and straightforward build suitable for beginners
  • Introduction to the Hidden Side theme and its AR integration
  • Incorporates play features and hidden elements for added interactivity
  • Compact size makes it easy to display and play with

📈 Investment Analysis

→ Price stable
B-
Investment Grade
⏳ Active
As a retired set from the Hidden Side theme, Welcome to the Hidden Side (70427-1) has moderate investment potential. The theme's unique blend of physical and digital play attracted a dedicated following, and the set's small size and relatively low price point make it an accessible entry point for collectors. However, its piece count is low, which limits its appeal to serious investors. Its value will likely appreciate slowly, driven by demand from collectors seeking to complete their Hidden Side collection.

Not Financial Advice: Content is for educational purposes only. Past performance doesn't guarantee future results. Full disclaimer

📖 About This Set

Fans of virtual reality and video games will love the amazing LEGO® Hidden Side universe, where physical and digital worlds merge in an incredible, single or multiplayer augmented reality (AR) experience. This Welcome to The Hidden Side (70427) ghost-hunting toy combines the open creative play of LEGO building toys with an app – so interaction with the model triggers events in the digital world.Digitally interactive building toy for kidsThis Welcome to the Hidden Side model reveals a ghostly world when viewed through a smart device equipped with the free LEGO AR app. Kids then get to hunt ghosts, battle the boss ghost Lady E and explore and solve mysteries, either alone or online with friends. And with 4 minifigures, there’s also room for imaginative role-play fun!Welcome to the Hidden SideThe LEGO Hidden Side universe is set in the fictional town of Newbury, where ghosts haunt people and buildings. The augmented reality play experience is constantly enhanced through new content, ghosts and special events.
  • This LEGO® Hidden Side building toy combines the open creative play of LEGO building playsets with an app for an amazing single or multiplayer augmented reality (AR) play experience. Ideal for kids aged 7 and up.
  • What’s in the box? A digitally interactive LEGO® Hidden Side haunted-tree model with fun features and functions, plus ghost-hunter Jack and possessed Axel Chops, Scrimper and Waylon minifigures.
  • This haunted-tree model reveals an amazing digital world when viewed through a smart device equipped with the LEGO® Hidden Side AR app. Kids then get to hunt ghosts, solve mysteries and battle the boss ghost Lady E.
  • Looking for a birthday or any-other-day gift for kids aged 7 and up? This LEGO® Hidden Side playset is a great gift idea for LEGO building fans and for kids who love virtual reality and digital games.
  • When built, this LEGO® Welcome to The Hidden Side (70427) model measures over 6" (17cm) high, 8" (22cm) wide and 5" (13cm) deep.
  • Battery-free building toy. The Hidden Side AR app is compatible with selected iOS and Android devices. Please check compatibility at www.LEGO.com/devicecheck. Children should ask parents' permission before going online.
  • It's easy to get started with this LEGO® Hidden Side augmented reality, app-driven building kit. It comes with easy-to-follow instructions in the box and online – so simply open the brick bags and let the fun begin!
  • The LEGO® Hidden Side universe is set in the fictional town of Newbury, where ghosts haunt people and buildings. The augmented reality play experience is constantly enhanced through new content, ghosts and events.
  • LEGO® Hidden Side toy construction sets meet the highest industry standards and quality criteria to ensure that all LEGO bricks and pieces are consistent, compatible and connect and pull apart easily every time.
  • At the LEGO group, we drop, heat, crush, twist and analyze our building bricks and pieces to make sure every playset meets the highest global safety and quality standards.

Compare Similar Sets

Compared to other Hidden Side sets, Welcome to the Hidden Side is a smaller and more affordable entry point. While sets like the Haunted High School (70425-1) offer a more complex build and larger display piece, this set provides a quick and accessible way to experience the theme's AR features. It's a good choice for those new to the Hidden Side or looking for a smaller, more manageable set.

4 Minifigures Included

The set includes four minifigures: Jack Davids, Waylon, Scrimper, and Axel Chops. These figures add play value. The ghost hunter Jack is fun, and the ghost figures are unique.

📦 Full Parts Inventory - 80 unique parts • 175 total pieces

Lamp Post 2 x 2 x 7 with 4 Base Flutes Lamp Post 2 x 2 x...
Part #: 11062 Black
Bar Holder with Clip Bar Holder with Clip
Part #: 11090 Black
Brick Arch 1 x 5 x 4 [Continuous Bow, Raised Underside Cross Supports] Brick Arch 1 x 5 ...
Part #: 14395 Black
Panel 1 x 4 x 2 with Side Supports - Hollow Studs Panel 1 x 4 x 2 w...
Part #: 14718 Light Bluish Gray
Tile Round 2 x 2 with Bottom Stud Holder Tile Round 2 x 2 ...
Part #: 14769 Black
Tile Round 2 x 2 with Bottom Stud Holder Tile Round 2 x 2 ...
Part #: 14769 Dark Bluish Gray
Slope Curved 2 x 2 x 2/3 Slope Curved 2 x ...
Part #: 15068 Light Bluish Gray
Panel 1 x 4 x 1 with Rounded Corners [Thin Wall] Panel 1 x 4 x 1 w...
Part #: 15207 Dark Bluish Gray
Plate Special 1 x 2 with Three Teeth [Tri-Tooth] Plate Special 1 x...
Part #: 15208 Yellowish Green
Tile Special 1 x 2 with Two Vertical Teeth / Tooth Tile Special 1 x ...
Part #: 15209 Yellowish Green
Brick Arch 1 x 6 x 2 - Thin Top without Reinforced Underside [New Version] Brick Arch 1 x 6 ...
Part #: 15254 Dark Bluish Gray
Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) Plate Special 1 x...
Part #: 15573 Dark Bluish Gray
Wedge Plate 4 Stud 45° Angle Plate Wedge Plate 4 Stu...
Part #: 15706 Medium Azure
Tile Special 1 x 1 with Clip with Rounded Edges Tile Special 1 x ...
Part #: 15712 Black
Creature Body Part, Barb Large (Claw, Talon) with Clip Creature Body Par...
Part #: 16770 Black
Brick Arch 1 x 3 x 2 Inverted [Inside Bow] Brick Arch 1 x 3 ...
Part #: 18653 Black
Tile Round 1 x 1 with Hollow Bar Tile Round 1 x 1 ...
Part #: 20482 Black
Tile Special 2 x 3 Pentagonal Tile Special 2 x ...
Part #: 22385 Black
Plant, Leaves 6 x 5 Plant, Leaves 6 x 5
Part #: 2417 Medium Azure
Tile 1 x 4 with Groove Tile 1 x 4 with G...
Part #: 2431 Dark Bluish Gray
Tile 1 x 4 with Groove Tile 1 x 4 with G...
Part #: 2431 Medium Azure
Tile Round 1 x 1 Quarter Tile Round 1 x 1 ...
Part #: 25269 Black
Plate Special 2 x 3 with Rocks Plate Special 2 x...
Part #: 27261 Black
Turntable 2 x 2 Female Turntable 2 x 2 F...
Part #: 27448 White
Tile 2 x 2 Curved, Macaroni Tile 2 x 2 Curved...
Part #: 27925 Coral
Tile 2 x 2 Curved, Macaroni Tile 2 x 2 Curved...
Part #: 27925 Yellow
Tile 2 x 2 Curved, Macaroni Tile 2 x 2 Curved...
Part #: 27925 Medium Azure
Tile 2 x 2 Curved, Macaroni Tile 2 x 2 Curved...
Part #: 27925 Light Bluish Gray
Minifig Head [Plain] [Vented Stud - 2 Holes] Minifig Head [Pla...
Part #: 28621 Trans-Neon Green
Insect, Spider with Elongated Tail Section Insect, Spider wi...
Part #: 29111 Black
Brick 2 x 4 Brick 2 x 4
Part #: 3001 Black
Brick 1 x 1 Brick 1 x 1
Part #: 3005 Black
Brick 1 x 6 Brick 1 x 6
Part #: 3009 Dark Bluish Gray
Plant, Sea Grass Plant, Sea Grass
Part #: 30093 Black
Brick 1 x 4 Brick 1 x 4
Part #: 3010 Light Bluish Gray
Animal, Bat Animal, Bat
Part #: 30103 Black
Brick Special 1 x 2 Palisade [aka Log] Brick Special 1 x...
Part #: 30136 Dark Bluish Gray
Plate Special 2 x 4 with Pins Plate Special 2 x...
Part #: 30157 Dark Bluish Gray
Plate 2 x 4 Plate 2 x 4
Part #: 3020 Black
Plate 2 x 2 Plate 2 x 2
Part #: 3022 Medium Azure
Plate 2 x 2 Plate 2 x 2
Part #: 3022 Black
Plate 1 x 2 Plate 1 x 2
Part #: 3023 Dark Azure
Plate 1 x 2 Plate 1 x 2
Part #: 3023 Medium Azure
Plate 1 x 2 Plate 1 x 2
Part #: 3023 Dark Blue
Plate 4 x 6 Plate 4 x 6
Part #: 3032 Black
Plate 4 x 6 Plate 4 x 6
Part #: 3032 Medium Azure
Plate 4 x 8 Plate 4 x 8
Part #: 3035 Medium Azure
Slope 45° 2 x 2 Slope 45° 2 x 2
Part #: 3039 Black
Slope 45° 2 x 1 with Bottom Pin Slope 45° 2 x 1 w...
Part #: 3040b Black
Tile 2 x 2 with Groove Tile 2 x 2 with G...
Part #: 3068b Yellow
Tile 1 x 2 with Smart Phone and Medium Azure Ghost Print Tile 1 x 2 with S...
Part #: 3069bpr0266 Black
Wedge Plate 4 x 6 Cut Corners Wedge Plate 4 x 6...
Part #: 32059 Black
Brick 1 x 2 x 2 with Inside Stud Holder Brick 1 x 2 x 2 w...
Part #: 3245c Black
Plate Special 2 x 2 with Only 2 studs Plate Special 2 x...
Part #: 33909 Light Bluish Gray
Equipment Paint Roller Brush Handle Smooth Handle Equipment Paint R...
Part #: 34076 Black
Brick 1 x 3 Brick 1 x 3
Part #: 3622 Black
Plate 1 x 3 Plate 1 x 3
Part #: 3623 Black
Plate 1 x 3 Plate 1 x 3
Part #: 3623 Light Bluish Gray
Slope Inverted 45° 2 x 1 Slope Inverted 45...
Part #: 3665 Black
Plate 1 x 6 Plate 1 x 6
Part #: 3666 Dark Blue
Plate 1 x 6 Plate 1 x 6
Part #: 3666 Light Aqua
Technic Brick 1 x 2 [1 Pin Hole] Technic Brick 1 x...
Part #: 3700 Black
Plate 1 x 4 Plate 1 x 4
Part #: 3710 Dark Blue
Plate 2 x 6 Plate 2 x 6
Part #: 3795 Dark Bluish Gray
Plate 2 x 6 Plate 2 x 6
Part #: 3795 Medium Azure
Plate 2 x 10 Plate 2 x 10
Part #: 3832 Black
Weapon Axe Weapon Axe
Part #: 3835 Black
Brick Round 2 x 2 with Axle Hole Brick Round 2 x 2...
Part #: 3941 Light Bluish Gray
Plate 8 x 8 with Rounded End Plate 8 x 8 with ...
Part #: 41948 Medium Azure
Dish 2 x 2 Inverted [Radar] Dish 2 x 2 Invert...
Part #: 4740 Black
Rock Panel 2 x 4 x 6 Rock Panel 2 x 4 x 6
Part #: 47847 Black
Plate Special 1 x 2 [Side Handle Closed Ends] Plate Special 1 x...
Part #: 48336 Black
Plate Special 1 x 1 with Tooth Plate Special 1 x...
Part #: 49668 Yellowish Green
Slope Curved 3 x 1 No Studs Slope Curved 3 x ...
Part #: 50950 Black
Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Small Animal Body Part,...
Part #: 53451 Black
Slope 30° 1 x 1 x 2/3 (Cheese Slope) Slope 30° 1 x 1 x...
Part #: 54200 Black
Technic Axle Connector Hub with 3 Axles at 120° Technic Axle Conn...
Part #: 57585 Light Bluish Gray
Cone 1 x 1 [Top Groove] Cone 1 x 1 [Top G...
Part #: 59900 Trans-Purple
Brick Arch 1 x 3 x 2 Curved Top Brick Arch 1 x 3 ...
Part #: 6005 Black
Torso - Skeleton Thick Shoulder Pins Torso - Skeleton ...
Part #: 60115 Black
Plate Round 4 x 4 with Pin Hole Plate Round 4 x 4...
Part #: 60474 Light Bluish Gray
Plate Round 1 x 1 with Solid Stud Plate Round 1 x 1...
Part #: 6141 Medium Azure
Sticker Sheet for Set 70427-1 Sticker Sheet for...
Part #: 67022 [No Color/Any Color]
Slope 30° 1 x 2 x 2/3 Slope 30° 1 x 2 x...
Part #: 85984 Black
Tile 2 x 4 with Groove Tile 2 x 4 with G...
Part #: 87079 Black
Plate Special 1 x 2 [Top Clip] Plate Special 1 x...
Part #: 92280 Light Bluish Gray
Plate Special 1 x 2 with Angled Handles on Side Plate Special 1 x...
Part #: 92692 Black
Bracket 1 x 2 - 2 x 4 Bracket 1 x 2 - 2...
Part #: 93274 Dark Bluish Gray
Tile Round 1 x 1 with Monster Eye Print Tile Round 1 x 1 ...
Part #: 98138pr9996 Yellowish Green
Brick Special 1 x 2 with Masonry Brick Profile Brick Special 1 x...
Part #: 98283 Light Bluish Gray
Slope 75° 2 x 2 x 3 [Solid Studs] Slope 75° 2 x 2 x...
Part #: 98560 Black
Bracket 1 x 2 - 1 x 2 Bracket 1 x 2 - 1...
Part #: 99781 Dark Bluish Gray
The set offers a variety of basic bricks, plates, and tiles in black, light bluish gray, and dark bluish gray. The Medium Azure plant pieces are a nice addition for MOC builders looking to add foliage.

💎 Notable Parts

Black Brick 1 x 3 (6x) $0.30
Light Bluish Gray Brick Special 1 x 2 with Masonry Brick Profile (4x) $0.40
Medium Azure Plant, Leaves 6 x 5 (3x) $0.75
Est. BrickLink Part Value
$1.45

💡 MOC Potential

Small haunted chapel or graveyard scene
🏙 Adds spooky details to a LEGO City layout
🌳 Create a spooky haunted forest environment

📰 Set News

Community Insights

Real opinions from Reddit and YouTube

What Reddit Says

No Reddit discussions found for this set.

What YouTubers Say

Searching for YouTube reviews...

This may take a moment

📖 Building Instructions 2

Welcome to the Hidden Side Instructions
BI 3106, 64+4/65+115G, 70427 V29
Download PDF
Welcome to the Hidden Side Instructions
BI 3106, 64+4/65+115G, 70427 V39
Download PDF

Charts Inventory Statistics

80
Unique Parts
169
Total Pieces
4
Minifigures
Inventory Version: 2