How many pieces are in the King Boo and the Haunted Yard Expansion Set?

King Boo and the Haunted Yard Expansion Set contains 431 pieces.

What age is the King Boo and the Haunted Yard Expansion Set recommended for?

This set is recommended for ages 6-16.

When was the King Boo and the Haunted Yard Expansion Set released?

King Boo and the Haunted Yard Expansion Set was released in 2020.

LEGO King Boo and the Haunted Yard Expansion Set set 71377

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🏛 Super Mario

Set #71377

King Boo and the Haunted Yard Expansion Set

The King Boo and the Haunted Yard Expansion Set is a spooky addition to the LEGO Super Mario universe.

Before you buy

Who it's for: Ages 8+ · Intermediate build Fans of LEGO Super Mario looking to expand their interactive world
Build: 431 pieces · about 3 hours Build time is an estimate.
Price: $7.99 list price · 1.9¢ per piece
Availability: Retired at LEGO

★★★☆☆ 3.8 community rating from 44 ratings

Fans appreciate the set's unique King Boo figure and the interactive gameplay it adds to the LEGO Super Mario experience. Some reviewers find the build somewhat repetitive and the price a bit high for the piece count, but overall, it's considered a worthwhile addition to the theme.

$7.99

📝 Our Take

AI-assisted editorial summary, grounded in our LEGO database and public community discussions. How we use AI

The King Boo and the Haunted Yard Expansion Set is a spooky addition to the LEGO Super Mario universe. This set brings the iconic King Boo character to life with interactive play features and a creatively designed haunted yard environment.

This set is perfect for Super Mario fans and LEGO enthusiasts of all ages. The build is engaging without being overly complex, and the interactive features add an extra layer of fun.

Skip this if you're not invested in the LEGO Super Mario system. This set requires the LEGO Mario or LEGO Luigi Starter Course to fully function; otherwise, consider other standalone LEGO sets with broader appeal.

✨ New

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🧱 Building Experience

AI-assisted build estimate, grounded in our LEGO database and public community discussions. How we use AI

🧩

431

Pieces

⏱

Estimated Build Time

📊

Intermediate

Difficulty

👤

6-16

Ages

Build Highlights:

Building King Boo with posable arms and a rotating platform
Creating the haunted yard environment with hidden surprises
Incorporating the interactive play features with the LEGO Mario or LEGO Luigi figures
Designing the set to integrate seamlessly with other LEGO Super Mario sets

📈 Investment Analysis

AI-assisted investment analysis, grounded in our LEGO database and public community discussions. How we use AI

Not enough price history for a trend

Investment Grade

⏳ Retired

The King Boo and the Haunted Yard Expansion Set, being a retired LEGO Super Mario set, holds potential for investment. Its appeal lies in the popularity of the Super Mario franchise and the unique interactive elements it brings to the LEGO world. While the set is not exceptionally rare, its retirement status and the continued demand for Super Mario LEGO sets suggest a reasonable appreciation over time. However, the investment potential is somewhat tied to the overall success and collectibility of the LEGO Super Mario theme.

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

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Compared to other LEGO Super Mario expansion sets, the King Boo set offers a unique boss battle experience and a distinct haunted theme. While sets like the Bowser's Castle Boss Battle Set (71369-1) provide a larger scale battle, the King Boo set offers a more focused and thematic build. Collectors might choose this set for its unique character and spooky atmosphere, making it a standout addition to their LEGO Super Mario collection.

📦 Parts Inventory

Official piece count: 431
Parts cataloged in this inventory: 125 unique parts, 431 pieces

Missing a piece? Check this set piece by piece, with look-alike colors flagged and element IDs for replacements.

Tile 6 x 6 with K...

Part #: 10202pr0008 1× White

Brick Special 1 x...

Part #: 11211 4× Blue

Brick Curved 2 x ...

Part #: 11477 8× Reddish Brown

Brick Arch 1 x 3 ...

Part #: 13965 2× Dark Brown

Tile 2 x 2 Corner

Part #: 14719 2× Black

Tile 2 x 2 Corner

Part #: 14719 1× Reddish Brown

Brick Curved 2 x ...

Part #: 15068 4× Dark Orange

Brick Arch 1 x 6 ...

Part #: 15254 2× Reddish Brown

Tile Special Roun...

Part #: 15535 1× Tan

Plate Special 1 x...

Part #: 15573 2× Black

Plate Special 1 x...

Part #: 15573 2× Reddish Brown

Wedge Plate 4 Stu...

Part #: 15706 4× Reddish Brown

Technic Gear 20 T...

Part #: 18575 1× Tan

Plate Special 1 x...

Part #: 18649 4× Black

Brick Curved 1 x ...

Part #: 18653 1× Reddish Brown

Plate Special Rou...

Part #: 18674 2× Reddish Brown

Plant, Flower Ste...

Part #: 19119 2× Black

Bar 2L with Towball

Part #: 22484 1× Red

Brick Curved Inve...

Part #: 24201 8× Blue

Plate 2 x 12

Part #: 2445 1× Dark Tan

Weapon Spear Tip ...

Part #: 24482 2× Black

Brick 1 x 2 x 5 w...

Part #: 2454b 8× Dark Bluish Gray

Wedge Plate 2 x 2...

Part #: 26601 4× Reddish Brown

Wedge Plate 2 x 2...

Part #: 26601 8× Magenta

Technic Pin with ...

Part #: 2780 12× Black

Insect, Spider wi...

Part #: 29111 2× Black

Brick 2 x 2 with ...

Part #: 3003pr0139 1× Blue

Brick 1 x 2

Part #: 3004 4× Dark Bluish Gray

Brick 1 x 2

Part #: 3004 7× White

Brick 1 x 2

Part #: 3004 1× Red

Brick 1 x 2

Part #: 3004 7× Black

Window 1 x 2 x 2 ...

Part #: 30044 2× Reddish Brown

Window 1 x 2 x 2 ...

Part #: 30046 3× Pearl Gold

Brick 1 x 1

Part #: 3005 2× Dark Bluish Gray

Brick 1 x 6

Part #: 3009 6× White

Brick 1 x 4

Part #: 3010 7× White

Brick Special 1 x...

Part #: 30136 5× Reddish Brown

Brick Special 1 x...

Part #: 30137 7× Reddish Brown

Plate 2 x 4

Part #: 3020 2× Dark Bluish Gray

Plate 2 x 4

Part #: 3020 1× Dark Tan

Plate 2 x 3

Part #: 3021 1× Dark Tan

Plate 2 x 2

Part #: 3022 2× Reddish Brown

Plate 2 x 2

Part #: 3022 2× Light Bluish Gray

Plate 1 x 2

Part #: 3023 4× Dark Azure

Plate 1 x 2

Part #: 3023 3× Black

Plate 1 x 2

Part #: 3023 12× Dark Bluish Gray

Plate 1 x 2

Part #: 3023 1× Reddish Brown

Plate 1 x 2

Part #: 3023 5× Dark Orange

Plate 1 x 2

Part #: 3023 2× Blue

Brick Special 1 x...

Part #: 30237b 8× Reddish Brown

Brick Special 1 x...

Part #: 30237b 4× Dark Bluish Gray

Plate 2 x 8

Part #: 3034 2× Light Bluish Gray

Plate 2 x 8

Part #: 3034 1× White

Plate 2 x 8

Part #: 3034 7× Dark Tan

Brick Sloped 45° ...

Part #: 3040b 1× Light Bluish Gray

Brick Sloped 45° ...

Part #: 3045 2× Black

Brick Round 1 x 1...

Part #: 3062b 2× Reddish Brown

Tile 2 x 2 with G...

Part #: 3068b 2× Dark Orange

Tile 2 x 2 with S...

Part #: 3068bpr0036 1× Blue

Tile 2 x 2 with K...

Part #: 3068bpr0052 1× Dark Azure

Tile 2 x 2 with E...

Part #: 3068bpr0053 4× Black

Tile 2 x 2 with C...

Part #: 3068bpr0060 2× Light Bluish Gray

Tile 2 x 2 with G...

Part #: 3068bpr0439 2× Dark Orange

Tile 2 x 2 with G...

Part #: 3068bpr9978 2× Dark Orange

Tile 1 x 2 with G...

Part #: 3069b 1× Reddish Brown

Tile 1 x 1 with G...

Part #: 3070b 2× Black

Technic Brick 1 x...

Part #: 32000 4× Black

Technic Pin 3/4

Part #: 32002 6× Tan

Plate Special 1 x...

Part #: 32028 2× Light Bluish Gray

Technic Axle 2 No...

Part #: 32062 1× Red

Technic Beam 1 x ...

Part #: 32063 2× Black

Technic Axle 5

Part #: 32073 1× Light Bluish Gray

Technic Bush 1/2 ...

Part #: 32123b 2× Yellow

Technic Gear 12 T...

Part #: 32270 3× Black

Brick 1 x 2 x 2 w...

Part #: 3245c 1× Reddish Brown

Technic Beam 1 x ...

Part #: 32523 1× White

Technic Worm Gear...

Part #: 32905 1× Light Bluish Gray

Brick Special 1 x...

Part #: 32952 2× Light Bluish Gray

Brick Sloped 33° ...

Part #: 3298 5× Black

Technic Gear 20 T...

Part #: 35185 2× Blue

Brick Arch 1 x 4

Part #: 3659 4× Reddish Brown

Brick Sloped Inve...

Part #: 3660 1× White

Plate 1 x 6

Part #: 3666 2× Light Bluish Gray

Technic Pin witho...

Part #: 3673 1× Light Bluish Gray

Brick Sloped 33° ...

Part #: 3675 8× Black

Technic Brick 1 x...

Part #: 3700 1× White

Technic Axle 4

Part #: 3705 3× Red

Technic Plate 2 x...

Part #: 3709 1× Black

Plate 1 x 4

Part #: 3710 2× Black

Brick Curved 1 x ...

Part #: 37352 2× White

Technic Plate 2 x...

Part #: 3738 1× Light Bluish Gray

Technic Gear Rack...

Part #: 3743 2× White

Window Pane Latti...

Part #: 38320 4× Pearl Gold

Technic Brick 1 x...

Part #: 3894 2× Dark Bluish Gray

Crown / Flower / ...

Part #: 39262 1× Pearl Gold

Brick Round 2 x 2...

Part #: 3941 1× Lime

Plate 6 x 6

Part #: 3958 1× White

Technic Pin Long ...

Part #: 39888 1× Tan

Plate Round 2 x 2...

Part #: 4032a 1× Blue

Technic Beam 1 x ...

Part #: 40490 2× Black

Plate Special 1 x...

Part #: 41740 1× Black

Brick Special 1 x...

Part #: 4216 2× Reddish Brown

Technic Driving R...

Part #: 42195 1× Light Bluish Gray

Gate 1 x 4 x 9 Ar...

Part #: 42448 2× Black

Technic Pin 1/2 w...

Part #: 4274 1× Blue

Brick Sloped 33° ...

Part #: 4286 2× Dark Tan

Hinge Plate 2 x 4...

Part #: 43045 1× Light Bluish Gray

Hinge Plate 2 x 4...

Part #: 43056 1× Light Bluish Gray

Bracket 1 x 2 - 2...

Part #: 44728 1× White

Technic Axle 3

Part #: 4519 3× Yellow

Brick Sloped 30° ...

Part #: 54200 8× Dark Azure

Brick Sloped 30° ...

Part #: 54200 3× Dark Brown

Technic Axle Conn...

Part #: 59443 5× Black

Plate Special 1 x...

Part #: 60470b 4× Yellow

Brick Special 1 x...

Part #: 60475b 2× Dark Bluish Gray

Brick Sloped 65° ...

Part #: 60481 1× Dark Brown

Technic Beam 1 x ...

Part #: 60483 2× Dark Bluish Gray

Plate Special 1 x...

Part #: 60897 8× Blue

Plate Round 1 x 1...

Part #: 6141 2× Light Bluish Gray

Technic Pin Conne...

Part #: 62462 2× Black

Tile 1 x 3

Part #: 63864 1× Dark Tan

Door 1 x 4 x 6 Ro...

Part #: 64390 1× Dark Brown

Technic Brick 1 x...

Part #: 6541 2× Reddish Brown

Plate Round Corne...

Part #: 66789 2× Dark Orange

Plate Round Corne...

Part #: 66790 4× Dark Orange

Plate Round Corne...

Part #: 66792 4× Dark Orange

Plate Round Corne...

Part #: 66792 7× Reddish Brown

Plate Round Corne...

Part #: 66792 6× Light Bluish Gray

Feet, 2 x 2 x 2/3...

Part #: 66858 2× Reddish Brown

Brick Special 1 x...

Part #: 67329 4× Dark Bluish Gray

Brick Round Corne...

Part #: 85080 8× Reddish Brown

Brick Sloped 30° ...

Part #: 85984 1× Black

Technic Axle 4 wi...

Part #: 87083 1× Dark Bluish Gray

Plate Special 2 x...

Part #: 87580pr0002 4× Dark Azure

Brick Wedged 2 x ...

Part #: 87620 9× Dark Bluish Gray

Brick Arch 1 x 3 x 2

Part #: 88292 2× Reddish Brown

Window 1 x 2 x 2 ...

Part #: 90195 4× Dark Bluish Gray

Insect Accessory,...

Part #: 90981 5× White

Brick Arch 1 x 6 ...

Part #: 92950 2× Reddish Brown

Brick Curved 4 x ...

Part #: 93606 2× Dark Bluish Gray

Tile Round 1 x 1

Part #: 98138 4× Red

Brick Special 1 x...

Part #: 98283 4× Dark Bluish Gray

Brick Sloped 75° ...

Part #: 98560 2× Dark Bluish Gray

Bracket 1 x 2 - 2...

Part #: 99207 4× Blue

The set features a good selection of reddish-brown and dark bluish gray elements, useful for creating haunted or medieval-themed MOCs. The inclusion of magenta wedge plates adds a pop of color and design flexibility.

Community Insights

Real opinions from Reddit and YouTube

What Reddit Says

No Reddit discussions found for this set.

What YouTubers Say

1 video found

BlockTalk AI

BlueBrick33's review of the King Boo set (71377) praises its unique Halloween aesthetic and the well-designed King Boo figure with its large printed face tile. The reviewer considers it a solid set overall and recommends purchasing it before it retires.