---
product_id: 146542278
title: "LEGO Hidden Side Graveyard Mystery 70420 Building Kit, App Toy for 7+ Year Old Boys and Girls, Interactive Augmented Reality Playset (335 Pieces)"
brand: "lego"
price: "440 zł"
currency: PLN
in_stock: true
reviews_count: 13
category: "Lego"
url: https://www.desertcart.pl/products/146542278-lego-hidden-side-graveyard-mystery-70420-building-kit-app-toy
store_origin: PL
region: Poland
---

# 4 unique minifigures + ghost dog AR app integration 335-piece immersive build LEGO Hidden Side Graveyard Mystery 70420 Building Kit, App Toy for 7+ Year Old Boys and Girls, Interactive Augmented Reality Playset (335 Pieces)

**Brand:** lego
**Price:** 440 zł
**Availability:** ✅ In Stock

## Summary

> 👻 Unlock spooky fun with LEGO Hidden Side — where bricks meet the digital beyond!

## Quick Answers

- **What is this?** LEGO Hidden Side Graveyard Mystery 70420 Building Kit, App Toy for 7+ Year Old Boys and Girls, Interactive Augmented Reality Playset (335 Pieces) by lego
- **How much does it cost?** 440 zł with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/146542278-lego-hidden-side-graveyard-mystery-70420-building-kit-app-toy)

## Best For

- lego enthusiasts

## Why This Product

- Trusted lego brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compatible & Collectible:** Mix and match with all LEGO bricks and sets to expand your supernatural world and keep the adventure growing.
- • **Inclusive Ghost-Hunting Crew:** Includes 4 minifigures and a ghost dog to team up for thrilling AR ghost battles and mysteries.
- • **Build Your Own Haunted Adventure:** 335 detailed LEGO pieces create a spooky graveyard scene that sparks creativity and storytelling.
- • **Augmented Reality Meets Imagination:** Seamlessly blend physical play with digital thrills via the Hidden Side app for an interactive ghost-hunting experience.
- • **Dynamic Playset with Moving Features:** Twistable statue, opening grave, and posable haunted tree arms bring the set to life for endless fun.

## Overview

The LEGO Hidden Side Graveyard Mystery 70420 is a 335-piece building set designed for kids 7 and up that combines traditional LEGO construction with an augmented reality app. Featuring 4 minifigures, a ghost dog, and interactive elements like a twistable statue and opening grave, this playset offers a unique hybrid experience of physical and digital ghost-hunting adventures. Compatible with iOS and Android devices, it encourages creative play and storytelling while integrating seamlessly with other LEGO sets.

## Description

Kids can experience fun ghost-catching adventures combining an augmented reality play experience with this LEGO Hidden Side 70420 Graveyard Mystery playset. This awesome app toy combines a buildable LEGO model with augmented reality for kids to deliver a fully interactive play experience. Download the Hidden Side app and scan the model with a phone to make it come alive. With continuous updates, a unique boss ghost to battle in each set, new mysteries to solve, cool items to find, games to play and ghosts to collect, this LEGO Hidden Side set gives kids a whole new way to play and interact with building bricks! Packed with cool graveyard details, this toy construction set features a dog figure, gardener figure, girl and boy minifigures, a twistable statue, grave that opens and a haunted tree with posable arms for lots of fun ghost-hunting adventures.

Review: Cool - Cool set it came fast was exactly as described all parts accounted for. It's a major brand so the quality is great directions were clear. And can be used with all other of the major brand.
Review: Great set and good app - Great set! There is a lot of detail and my 6 year old loved putting it together. There are a lot of negative comments about the interactive portion. I think this is very family dependent. My 6 year old plays almost no video games so getting to do this was a real treat and she loved it. Both my husband and I enjoyed playing it with her. I’m not sure how many times she’ll want to play but for a a very reasonable price (especially for Legos) and an afternoon of fun we give this 5 stars.

## Features

- Introduce youngsters to the exciting world of LEGO Hidden Side : A unique play experience that combines the open creative play of LEGO building toys for kids with an augmented reality app
- A great kids’ birthday gift or Christmas gift, the Graveyard Mystery playset lets kids build their very own haunted graveyard toy with a twisting statue, grave that opens and haunted toy tree for hours of creative play
- This augmented reality toy for kids includes 4 minifigures: heroes Jack Davids and Parker L. Jackson with smartphones, a skeleton figure and Mr. Branson, plus the ghost dog, Spencer, for the best ghost-hunting adventures
- A ghost playset for boys and girls aged 7+, this Graveyard Mystery 70420 building set can be built together with all other original LEGO toys and LEGO bricks for creative play
- This graveyard ghost-catching adventure toy measures over 5” (14cm) high and 12” (32cm) wide and is full of cool details that interact with the augmented reality app for a fully interactive play experience
- A tablet or mobile phone is required to experience the fill augmented reality play experience, but not included. Compatible with selected iOS and Android devices. Compatible with select mobile devices

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07NRT5BHZ |
| Best Sellers Rank | #125,493 in Toys & Games ( See Top 100 in Toys & Games ) #4,304 in Toy Building Sets |
| Customer Reviews | 4.8 4.8 out of 5 stars (4,665) |
| Department | Toys & Games |
| Item Weight | 3.52 ounces |
| Item model number | 6250495 |
| Manufacturer | LEGO |
| Manufacturer recommended age | 7 years and up |
| Product Dimensions | 13.94 x 7.52 x 2.32 inches |
| Release date | August 1, 2019 |

## Images

![LEGO Hidden Side Graveyard Mystery 70420 Building Kit, App Toy for 7+ Year Old Boys and Girls, Interactive Augmented Reality Playset (335 Pieces) - Image 1](https://m.media-amazon.com/images/I/61wtCos9BxL.jpg)
![LEGO Hidden Side Graveyard Mystery 70420 Building Kit, App Toy for 7+ Year Old Boys and Girls, Interactive Augmented Reality Playset (335 Pieces) - Image 2](https://m.media-amazon.com/images/I/71-62klPi6L.jpg)
![LEGO Hidden Side Graveyard Mystery 70420 Building Kit, App Toy for 7+ Year Old Boys and Girls, Interactive Augmented Reality Playset (335 Pieces) - Image 3](https://m.media-amazon.com/images/I/71HrrpIFDgL.jpg)
![LEGO Hidden Side Graveyard Mystery 70420 Building Kit, App Toy for 7+ Year Old Boys and Girls, Interactive Augmented Reality Playset (335 Pieces) - Image 4](https://m.media-amazon.com/images/I/71IpIc1FFgL.jpg)
![LEGO Hidden Side Graveyard Mystery 70420 Building Kit, App Toy for 7+ Year Old Boys and Girls, Interactive Augmented Reality Playset (335 Pieces) - Image 5](https://m.media-amazon.com/images/I/71kE6smjf-L.jpg)

## Questions & Answers

**Q: Is this only compatible with iPhone?**
A: Hi there! The Hidden Side app is compatible with select iOS and Android devices that have the right Augmented Reality technology. For a list of compatible devices, visit LEGO.build/DeviceCheck. - Emily, LEGO® Customer Service

**Q: does the app work without wifi or internet?**
A: Hi there! It should work A-Okay without an active connection, but you'll want to be able to connect periodically to install updates. - Emily, LEGO® Customer Service

**Q: Will the app work with an android lg fiesta lte, model lgl63bl ?**
A: HI there! No, the LG Fiesta is not compatible with the Hidden Side app. It doesn't have the right Augmented Reality features (called ARCore) to run the app. For a list of compatible devices, visit LEGO.build/DeviceCheck-Amazon. - Emily, LEGO® Customer Service

**Q: Can you use it with an iPad?**
A: The Hidden Side app is available on the iTunes store, check here which iPads are compatible with the app. www.LEGO.build/DeviceCheck

- Samuel, LEGO® Customer Service

## Customer Reviews

### ⭐⭐⭐⭐⭐ Cool
*by A***R on November 9, 2025*

Cool set it came fast was exactly as described all parts accounted for. It's a major brand so the quality is great directions were clear. And can be used with all other of the major brand.

### ⭐⭐⭐⭐⭐ Great set and good app
*by R***K on October 15, 2019*

Great set! There is a lot of detail and my 6 year old loved putting it together. There are a lot of negative comments about the interactive portion. I think this is very family dependent. My 6 year old plays almost no video games so getting to do this was a real treat and she loved it. Both my husband and I enjoyed playing it with her. I’m not sure how many times she’ll want to play but for a a very reasonable price (especially for Legos) and an afternoon of fun we give this 5 stars.

### ⭐⭐⭐⭐⭐ Cool gift
*by C***. on May 22, 2025*

Grandchild's Christmas gift. Loved it and the surprises it held.

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*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-01-24*