Excellent with the LEGO app.
Very good functionality for playing with the LEGO app. My son loved it.
Retailer prices for 70420 are sorted by the latest lowest price.
Retailer pricesPrice history 70420
We check Dutch retailers every day. This graph shows the full daily-low price series we have for this set.
Daily lowest price tracked across 2 Dutch retailers. The dotted line marks LEGO's recommended retail price.
Source: daily measurement at 2 Dutch retailers, 15 Dec 2025 – 9 Feb 2026. RRP via LEGO.com.
| Date | Price | Retailer | Stock |
|---|---|---|---|
| €44,95 | Bol.com | In stock | |
| €44,95 | Bol.com | In stock | |
| €44,95 | Bol.com | In stock | |
| €44,95 | Bol.com | In stock | |
| €44,95 | Bol.com | In stock | |
| €49,95 | Bol.com | In stock | |
| €49,95 | Bol.com | In stock | |
| €49,95 | Bol.com | In stock | |
| €49,95 | Bol.com | In stock | |
| €59,99 | Bol.com | In stock | |
| €49,95 | Bol.com | In stock | |
| €49,95 | Bol.com | In stock |
Calibrated forecast based on historical pricing, seasonal patterns and retailer behavior. Tuned conservatively: rather cautious than optimistic.
Signal is mixed. Small movements are more likely than a big drop.
How LEGO 70420 compares to RRP and history.
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. Download the LEGO® Hidden Side™ app and point your phone at the Graveyard Mystery playset to make this building set for kids come alive and reveal the Hidden Side. Move the phone around to discover an ever-changing environment hidden around the model. This augmented reality toy includes 4 minifigures: heroes Jack Davids and Parker L. Jackson, a skeleton figure and Mr. Branson, plus Davids' ghost dog figure, Spencer, to pretend play the ghost-catching play in this graveyard toy and in the AR app. This Graveyard Mystery unique toy features a tombstone statue that twists, grave that open and a haunted toy tree with posable arms. Set in the fictional town of Newbury, where ghosts haunt people and buildings, LEGO® Hidden Side™ playsets let kids play out exciting ghost-hunting adventures that combine physical LEGO models with fully-interactive augmented reality. Build and play with the physical set and then bring it to life as you interact with the set while viewing it through the app. Using the LEGO® Hidden Side™ app is like looking through a window to a cool and spooky Hidden Side filled with challenging mysteries to solve, ghosts to defeat and unique ghost bosses, like Mamali, to overcome in each set. To get the full augmented reality experience, a tablet or mobile phone is required, but not included. Compatible with selected iOS and Android devices. Check compatibility at www.LEGO.com/devicecheck. Children should ask permission before going online. Graveyard measures over 5” (14cm) high, 12” (32cm) wide and 3” (10cm) deep
All about this set
Background, build experience, collector context, and buying notes in one story.
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. Download the LEGO® Hidden Side™ app and point your phone at the Graveyard Mystery playset to make this building set for kids come alive and reveal the Hidden Side. Move the phone around to discover an ever-changing environment hidden around the model. This augmented reality toy includes 4 minifigures: heroes Jack Davids and Parker L. Jackson, a skeleton figure and Mr. Branson, plus Davids' ghost dog figure, Spencer, to pretend play the ghost-catching play in this graveyard toy and in the AR app. This Graveyard Mystery unique toy features a tombstone statue that twists, grave that open and a haunted toy tree with posable arms. Set in the fictional town of Newbury, where ghosts haunt people and buildings, LEGO® Hidden Side™ playsets let kids play out exciting ghost-hunting adventures that combine physical LEGO models with fully-interactive augmented reality. Build and play with the physical set and then bring it to life as you interact with the set while viewing it through the app. Using the LEGO® Hidden Side™ app is like looking through a window to a cool and spooky Hidden Side filled with challenging mysteries to solve, ghosts to defeat and unique ghost bosses, like Mamali, to overcome in each set. To get the full augmented reality experience, a tablet or mobile phone is required, but not included. Compatible with selected iOS and Android devices. Check compatibility at www.LEGO.com/devicecheck. Children should ask permission before going online. Graveyard measures over 5” (14cm) high, 12” (32cm) wide and 3” (10cm) deep
When current prices are available, buying context appears here.
Instructions & specifications
Dimensions, pieces, build steps, and the official PDF building instruction.
Parts inventory
Known set data around pieces and build context.
Plates
Plate 1 x 2
Part ID 3023 · Olive Green
Qty 9
Plate 2 x 2 Corner
Part ID 2420 · Dark Bluish Gray
Qty 6
Plate 1 x 1
Part ID 3024 · Dark Green
Qty 6
Plate 1 x 4
Part ID 3710 · Dark Green
Qty 5
Plate 4 x 6
Part ID 3032 · Dark Tan
Qty 4
Plate 1 x 3
Part ID 3623 · Sand Green
Qty 4
Plate 2 x 6
Part ID 3795 · Reddish Brown
Qty 4
Plate 6 x 8
Part ID 3036 · Dark Tan
Qty 3
Plate 1 x 8
Part ID 3460 · Reddish Brown
Qty 3
Plate 1 x 6
Part ID 3666 · Dark Orange
Qty 3
Plate 2 x 4
Part ID 3020 · Dark Bluish Gray
Qty 2
Plate 1 x 4
Part ID 3710 · Reddish Brown
Qty 2
Plate 4 x 4
Part ID 3031 · Reddish Brown
Qty 1
Bricks Curved
Slope Curved 2 x 1 No Studs [1/2 Bow]
Part ID 11477 · Reddish Brown
Qty 6
Brick Curved 1 x 4 x 1 1/3 No Studs
Part ID 10314 · Light Bluish Gray
Qty 2
Slope Curved 2 x 1 No Studs [1/2 Bow]
Part ID 11477 · Light Bluish Gray
Qty 2
Brick Arch 1 x 6 x 2 - Thin Top without Reinforced Underside [New Version]
Part ID 15254 · Light Bluish Gray
Qty 2
Brick Curved 1 x 2 x 1 1/3 with Curved Top
Part ID 6091 · Light Bluish Gray
Qty 2
Brick Arch 1 x 4 x 2
Part ID 6182 · Light Bluish Gray
Qty 2
Brick Arch 1 x 3 x 2 Inverted [Inside Bow]
Part ID 18653 · Reddish Brown
Qty 1
Brick Curved 2 x 2, Two Top Studs
Part ID 30165 · Light Bluish Gray
Qty 1
Slope Curved 4 x 1 Double with No Studs
Part ID 93273 · Dark Bluish Gray
Qty 1
Animal / Creature Body Parts
Animal Body Part, Horn (Cattle) / Tentacle / Vine / Branch / Tongue - Long
Part ID 13564 · Reddish Brown
Qty 6
Bricks Round and Cones
Brick Round 1 x 1 Open Stud
Part ID 3062b · Reddish Brown
Qty 6
Cone 1 x 1 [Top Groove]
Part ID 59900 · Tan
Qty 2
Brick Round 1 x 1 Open Stud
Part ID 3062b · Red
Qty 1
Brick Round 1 x 1 Open Stud
Part ID 3062b · Lime
Qty 1
Brick Round 2 x 2 with Axle Hole
Part ID 3941 · Reddish Brown
Qty 1
Minifig Accessories
Equipment Telescope / Torch / Spyglass, Support Round 1 x 1 x 1 2/3
Part ID 64644 · Black
Qty 6
Equipment Telescope / Torch / Spyglass, Support Round 1 x 1 x 1 2/3
Part ID 64644 · Light Bluish Gray
Qty 2
Equipment Brush / Push Broom
Part ID 3836 · Reddish Brown
Qty 1
Equipment Shovel [Rounded Handle End]
Part ID 3837 · Dark Bluish Gray
Qty 1
Tap 1 x 1 without Hole in Spout
Part ID 4599b · Light Bluish Gray
Qty 1
Tiles Special
Tile Special 1 x 2 with Sloped Walls AKA Money / Gold Bar [Ingot]
Part ID 99563 · Light Bluish Gray
Qty 6
Tile Special 2 x 2 Inverted
Part ID 11203 · Red
Qty 3
Tile Special 1 x 1 with Clip with Rounded Edges
Part ID 15712 · Dark Bluish Gray
Qty 3
Tile Round 2 x 2 with Hole
Part ID 15535 · Dark Bluish Gray
Qty 2
Tile Round 1 x 1 with Hollow Bar
Part ID 20482 · Yellowish Green
Qty 2
Tile Special 2 x 3 Pentagonal
Part ID 22385 · Light Bluish Gray
Qty 1
Plates Special
Plate Special 2 x 3 with Rocks
Part ID 27261 · Reddish Brown
Qty 5
Plate Special 2 x 2 with Only 2 studs
Part ID 33909 · Reddish Brown
Qty 4
Plate Special 2 x 2 with Only 2 studs
Part ID 33909 · Tan
Qty 4
Plate Special 1 x 1 with Clip Vertical [Thick Open O Clip]
Part ID 60897 · Light Bluish Gray
Qty 4
Plate Special 1 x 1 with Clip Horizontal [Thick Open O Clip]
Part ID 61252 · Bright Green
Qty 3
Bracket 1 x 2 - 1 x 2
Part ID 99781 · Dark Bluish Gray
Qty 3
Plate Special 2 x 2 with Groove and Center Stud (Jumper)
Part ID 87580 · Dark Bluish Gray
Qty 2
Plate Special 1 x 2 [Top Clip]
Part ID 92280 · Light Bluish Gray
Qty 2
Plate Special 2 x 2 x 2/3 with Two Studs On Side and Two Raised
Part ID 99206 · Black
Qty 2
Plate Special 2 x 2 x 2/3 with Two Studs On Side and Two Raised
Part ID 99206 · Light Bluish Gray
Qty 2
Bracket 1 x 2 - 1 x 2 Inverted
Part ID 99780 · Green
Qty 2
Plate Special 1 x 2 with Door Rail
Part ID 32028 · Tan
Qty 1
Technic Plate 2 x 4 [3 Holes]
Part ID 3709 · Light Bluish Gray
Qty 1
Bracket 2 x 2 with 1 x 2 Vertical Studs
Part ID 41682 · Black
Qty 1
Plate Special 1 x 2 [Side Handle Closed Ends]
Part ID 48336 · Dark Bluish Gray
Qty 1
Plate Special 1 x 2 with Handle on End [Closed Ends]
Part ID 60478 · Reddish Brown
Qty 1
Plants & Trees
Plant, Leaves 6 x 5
Part ID 2417 · Dark Green
Qty 4
Plant / Creature Body Part, Vine / Tail / Tentacle / Bionicle Spine, Spiky
Part ID 55236 · Green
Qty 3
Plant, Grass Stem with Bar Hole [3.2mm]
Part ID 15279 · Olive Green
Qty 2
Plant, Leaves 4 x 3
Part ID 2423 · Olive Green
Qty 2
Plant, Plate 1 x 1 Round with 3 Leaves
Part ID 32607 · Green
Qty 2
Plant, Leaves 6 x 5
Part ID 2417 · Green
Qty 1
Plant, Carrot Top
Part ID 33183 · Reddish Brown
Qty 1
Bricks Special
Brick Special 1 x 1 with Studs on 2 Adjacent Sides
Part ID 26604 · Tan
Qty 4
Brick Special 1 x 2 with 2 Studs on 1 Side
Part ID 11211 · Light Bluish Gray
Qty 3
Brick Special 1 x 2 x 1 2/3 with 4 Studs on 1 Side
Part ID 22885 · Tan
Qty 2
Brick Special 1 x 2 x 1 2/3 with 4 Studs on 1 Side
Part ID 22885 · Light Bluish Gray
Qty 2
Brick Special 1 x 1 with Clip Vertical [Open O Clip, Hollow Stud]
Part ID 60475b · Light Bluish Gray
Qty 2
Brick Special 1 x 4 with 4 Studs on One Side
Part ID 30414 · Dark Bluish Gray
Qty 1
Brick Special 1 x 1 with Headlight
Part ID 4070 · Light Bluish Gray
Qty 1
Brick Special 2 x 2 with Grooves and Axle Hole
Part ID 90258 · Dark Bluish Gray
Qty 1
Technic Bricks
Technic Brick 1 x 2 with Axle Hole Type 1 [+ Opening] and Bottom Pin
Part ID 32064a · Black
Qty 4
Technic Brick 1 x 2 [1 Pin Hole]
Part ID 3700 · Reddish Brown
Qty 2
Technic Brick 1 x 1 with Pin Hole
Part ID 6541 · Reddish Brown
Qty 2
Technic Axles
Technic Axle 4
Part ID 3705 · Red
Qty 4
Technic Axle 2 Notched
Part ID 32062 · Red
Qty 3
Technic Pins
Technic Pin 1/2
Part ID 4274 · Light Bluish Gray
Qty 4
Technic Connectors
Technic Axle 1.5 with Perpendicular Axle Connector (Technic Pole Reverser Handle)
Part ID 6553 · Black
Qty 4
Technic Axle and Pin Connector Angled #5 - 112.5°
Part ID 32015 · Black
Qty 3
Technic Axle and Pin Connector Triple [120° Offset]
Part ID 10288 · Dark Brown
Qty 2
Large Figure Weapon Lightsaber Hilt with Axle Hole and Two Bar Holders
Part ID 24122 · Black
Qty 2
Technic Axle and Pin Connector Angled #3 - 157.5°
Part ID 32016 · Reddish Brown
Qty 2
Hinges, Arms and Turntables
Hinge Plate 1 x 4 Swivel Top / Base - Solid Clip [Complete Assembly]
Part ID 73983 · Black
Qty 4
Turntable 4 x 4 Square Base, Locking
Part ID 61485 · Black
Qty 1
Plate Special 4 x 6 with Trap Door Hinge [Long Pins]
Part ID 92099 · Dark Bluish Gray
Qty 1
Bars, Ladders and Fences
Fence Spindled 1 x 4 x 2 [4 Top Studs]
Part ID 15332 · Black
Qty 3
Bar 1L with Clip [Cut Edges and One Side Hole] [Gap in Clip]
Part ID 48729b · Light Bluish Gray
Qty 1
Bricks
Brick 1 x 2
Part ID 3004 · Dark Bluish Gray
Qty 3
Brick 1 x 1
Part ID 3005 · Medium Nougat
Qty 3
Brick 1 x 2 x 2 with Inside Stud Holder
Part ID 3245c · Reddish Brown
Qty 2
Brick 1 x 3
Part ID 3622 · Dark Bluish Gray
Qty 2
Brick 2 x 2 Corner
Part ID 2357 · Reddish Brown
Qty 1
Brick 1 x 6
Part ID 3009 · Light Bluish Gray
Qty 1
Plates Round Curved and Dishes
Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening)
Part ID 4032a · Light Bluish Gray
Qty 3
Plate Round 4 x 4 with Pin Hole
Part ID 60474 · Dark Brown
Qty 1
Plate Round 1 x 1 with Solid Stud
Part ID 6141 · Bright Green
Qty 1
Plate Round 1 x 1 with Solid Stud
Part ID 6141 · Pearl Gold
Qty 1
Plate Round 1 x 1 with Solid Stud
Part ID 6141 · Black
Qty 1
Plate Round 1 x 1 with Solid Stud
Part ID 6141 · Medium Azure
Qty 1
Tiles
Tile 1 x 3
Part ID 63864 · Reddish Brown
Qty 3
Tile 2 x 4 with Groove
Part ID 87079 · Light Bluish Gray
Qty 3
Tile 1 x 6 with Groove
Part ID 6636 · Black
Qty 2
Tile 2 x 2 with Groove
Part ID 3068b · Medium Azure
Qty 1
Tile 2 x 2 with Groove
Part ID 3068b · Light Bluish Gray
Qty 1
Tile 2 x 2 with Groove
Part ID 3068b · Yellow
Qty 1
Tile 1 x 3
Part ID 63864 · Black
Qty 1
Plates Angled
Wedge Plate 4 Stud 45° Angle Plate
Part ID 15706 · Reddish Brown
Qty 2
Wedge Plate 6 x 6 Cut Corner
Part ID 6106 · Dark Tan
Qty 2
Wedge Plate 3 x 6 Cut Corners
Part ID 2419 · Dark Tan
Qty 1
Wedge Plate 4 x 4 Cut Corner
Part ID 30503 · Reddish Brown
Qty 1
Wedge Plate 3 x 2 Right
Part ID 43722 · Dark Bluish Gray
Qty 1
Wedge Plate 3 x 2 Left
Part ID 43723 · Dark Bluish Gray
Qty 1
Windows and Doors
Window 1 x 2 x 2 2/3 Pane Lattice Diamond with Rounded Top
Part ID 30046 · Pearl Gold
Qty 2
Gate 1 x 4 x 9 Arched with Bars and Three Studs
Part ID 42448 · Black
Qty 2
Window 1 x 2 x 2 2/3 with Rounded Top
Part ID 30044 · Reddish Brown
Qty 1
Door Frame 2 x 4 x 6
Part ID 60599 · Light Bluish Gray
Qty 1
Door 1 x 4 x 6 Round Top with Window and Keyhole, Reinforced Edge
Part ID 64390 · Dark Brown
Qty 1
Window 1 x 2 x 2 Castle
Part ID 90195 · Dark Bluish Gray
Qty 1
Bricks Sloped
Slope 18° 4 x 2
Part ID 30363 · Dark Bluish Gray
Qty 2
Slope 45° 2 x 2
Part ID 3039 · Dark Bluish Gray
Qty 2
Slope 18° 2 x 1 x 2/3 with 4 Slots / Grate
Part ID 61409 · Dark Bluish Gray
Qty 2
Slope 45° 2 x 1 Double with Inside Stud Holder
Part ID 3044c · Dark Bluish Gray
Qty 1
Slope 33° 3 x 2
Part ID 3298 · Green
Qty 1
Slope 33° 3 x 1
Part ID 4286 · Reddish Brown
Qty 1
Slope 30° 1 x 1 x 2/3 (Cheese Slope)
Part ID 54200 · Reddish Brown
Qty 1
Slope 65° 2 x 1 x 2
Part ID 60481 · Dark Bluish Gray
Qty 1
Panels
Panel 1 x 2 x 3 [Side Supports / Hollow Studs]
Part ID 87544 · Light Bluish Gray
Qty 2
Panel 1 x 4 x 3 [Side Supports / Hollow Studs]
Part ID 60581 · Light Bluish Gray
Qty 1
Bricks Wedged
Wedge 2 x 2 Facet
Part ID 87620 · Dark Bluish Gray
Qty 2
Wedge 3 x 3 Cut Corner
Part ID 30505 · Reddish Brown
Qty 1
Tiles Round and Curved
Tile Round 2 x 2 with Bottom Stud Holder
Part ID 14769 · Medium Azure
Qty 1
Minifig Neckwear
Minifig Neckwear Bracket with 2 Back Studs
Part ID 18986 · Trans-Clear
Qty 1
Supports, Girders and Cranes
Support Round 2 x 2 x 2 Stand with Reinforced Underside
Part ID 19798 · Black
Qty 1
Minifig Heads
Minifig Head [Plain] [Hollow Stud]
Part ID 3626c · Light Bluish Gray
Qty 1
Minifig Headwear
Minifig Shields, Weapons, & Tools
Tool Pickaxe
Part ID 3841 · Dark Bluish Gray
Qty 1
Animals / Creatures
Stickers
Containers
Trash Can with 4 Cover Holders
Part ID 92926 · Green
Qty 1
Minifig Upper Body
Retailer reviews
Summarized retailer review data when available.
Very good functionality for playing with the LEGO app. My son loved it.
It's a shame that the compatible devices are not listed in the box. After purchasing it, I haven't been able to install the app (and I have 4 mobile phones and a tablet at home). The worst thing is that when I email LEGO, they don't respond. It's regrettable that a company like LEGO doesn't have an effective customer service.
Really fun to use with the app. After a little training, my 5-year-old was able to use it on his own without any problems.
Great toy, as expected from LEGO.
for Christmas
Hidden Side is a new LEGO theme. Initially, it is interactive using augmented reality, for which you can download an app, but you don't need a device to build this set. Without the virtual ghost hunt, it's still fun! The graveyard goes well with older sets in a spooky style. Although the series is not seasonal, the graveyard is an ideal set for Halloween. The minifigures are original, including two skaters. The other three figures are the statue, skeleton, and a minifigure that can transform into a monster.
Very nice LEGO set to play with, but unfortunately the app doesn't work on our phones and tablet, which is a downside for my son, but he really loves the LEGO set.
We were able to test this set, and my 8-year-old son was very curious, especially about the app. He quickly put the set together, although the first time he did it in reverse. So, a little supervision is not a bad idea. Then, he tried to play the app, but it wasn't working yet, but that didn't dampen his enthusiasm. Eventually, the app became available, but it wasn't possible to download it on my Samsung at first, but luckily I had several brands. The app is a huge success. He loves building, fighting, and doing everything that a boy of that age enjoys. Without the app, he doesn't really play with it. He definitely wants several sets, so thumbs up for LEGO!
What a great set! We were able to try this one out. My son received it with great pleasure. The building process went smoothly. He was able to put everything together using the instructions. Beautiful colors, clear illustrations. The included figures are also very detailed! Super. However, the app was a bit difficult. It was just activated in the testing phase. We couldn't get it to activate on the tablet. So, we used the phone instead. We were missing a description, an explanation... but my son figured it out. Scanning the graveyard worked very well one time, and not at all the other time. Also, friends in the neighborhood were curious and came to see and try it out. I see many possibilities with the use of the app! It's a shame that it doesn't work so well yet. And the voices used are strange. You can't hear what they're saying, but you can read it...
Over the past few weeks, we have been able to test the LEGO Hidden Side; Graveyard Mystery set. My daughter really loves this set. She is currently very interested in "exciting ghost stories," and this set fits perfectly into that. The set is easy to build, and the instructions are clear (my nine-year-old daughter didn't need any help building it). And of course, she had a lot of fun playing with it. My daughter thinks the color scheme of this LEGO set is very nice, as well as the building style. However, her 9-year-old friend made the critical comment "I think these colors are too bright because it's an old building style." As a mother, I also find this LEGO set fun, and the moving graves and accompanying skeletons are also a nice detail. Unfortunately, we haven't been able to install the LEGO Hidden Side app, which allows you to catch ghosts, because my phone doesn't meet the required specifications. However, this doesn't detract from the fun at all.
All retailer prices
Current prices, stock and discounts per retailer.
Price context
Lowest, highest and average price for this set.
This context is based on 38 price points across 0 retailers. The chart on the page remains the full interactive source.
Price forecast
Conservative baseline for the next period.
The signal is mixed. Small movements are more likely than a large drop.
FAQ & set details
Pieces, year, RRP and retailer coverage.
Quick answers about price, stock and set data.