Spooky Fun!
Defeat King Boo in his Haunted Yard!

Add frightful challenges to your LEGO Super Mario world with this 431-piece Expansion Set, featuring Goombas and Swoops!

Breaking News
🏛 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.

🏆 Best For: Fans of LEGO Super Mario looking to expand their interactive world ⏱ 3 hr build 🧩 431 pcs 🎂 Ages 8+
★★★☆☆ 3.8

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.

📝 Our Take

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.

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How does this set enhance the interactive play experience with LEGO Mario or LEGO Luigi? What are some creative ways to incorporate this set into a larger LEGO Super Mario layout? How does the value of this set compare to other retired LEGO Super Mario expansion sets? What are the best ways to display this set to showcase its unique features?

🧱 Building Experience

🧩
431
Pieces
3h
Build Time
📊
Intermediate
Difficulty
📏
7cm × 2cm × 7cm
Dimensions
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

→ Price stable
B
Investment Grade
⏳ Active
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. It's a relatively safe investment with moderate growth potential, especially for collectors focused on completing the Super Mario series.

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

📖 About This Set

LEGO® Super Mario™ fans will love the frightful challenges in this King Boo and the Haunted Yard Expansion Set (71377). A fun gift for kids to add to the LEGO Super Mario Starter Course (71360), this collectible toy features King Boo, 2 Goombas and 4 Swoop figures for action-packed gameplay. To get to the hidden Super Star, players must stomp on Goombas and a spider web, flip a tree and then stomp the spinning Swoops to topple King Boo.

Exciting app
Make building this set even more fun with intuitive Instructions PLUS on the free LEGO Super Mario app. It features digital viewing tools and creative suggestions for alternative ways to build and play and is a safe platform for fans to share ideas.

Limitless gameplay
Perfect for fun competitions with friends or solo gameplay, LEGO Super Mario toy playsets bring a family-favorite character into the real world. The Starter Course, Expansion Sets and Power-Up Packs nurture kids’ problem-solving creativity.

  • Fans can create frightfully fun, stomping, spinning challenges to add to their LEGO® Super Mario™ Starter Course with this action-packed King Boo and the Haunted Yard Expansion Set (71377).
  • This LEGO® Super Mario™ toy playset features 2 Goombas, 4 Swoops and a King Boo for gameplay action as players guide LEGO® Mario™ (figure not included; find in the Starter Course) through the brick-built haunted yard.
  • After defeating the Goombas, stomping on a spider web and flipping a tree to collect digital coins, LEGO® Mario™ (figure not included) must jump on the spinning Swoops until King Boo is toppled to reveal the Super Star.
  • A super birthday or holiday gift for kids aged 8 and up, this 431-piece LEGO® toy playset inspires children to create their own unique levels to add to their Adventures with Mario Starter Course (71360).
  • This modular set measures over 6.5” (17.5cm) high, 16.5” (42.5cm) wide and 10.5” (27.5cm) deep in its basic formation. It can be rearranged and combined with the Starter Course and other Expansion Sets in many ways.
  • No batteries required for this creative building toy – power up the gameplay by adding it to the Starter Course.
  • The free LEGO® Super Mario™ app has cool viewing tools to make building more fun and gives kids a safe platform for sharing creative ideas. For a list of compatible Android and iOS devices, visit LEGO.com/devicecheck.
  • Collectible LEGO® Super Mario™ construction toys bring a family-favorite character into the real world, offering fans unlimited ways to expand, rebuild and create new challenges to master in group or solo gameplay.
  • Since 1958, LEGO® building bricks have met the highest industry standards. They connect perfectly and pull apart easily every time, so there’s no need for a Super Star’s power to build or rebuild!
  • LEGO® bricks and pieces are tested in almost every way imaginable so you can be sure that every LEGO toy building set meets the highest safety and quality standards.

Compare Similar Sets

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.

📦 Full Parts Inventory - 125 unique parts • 431 total pieces

Tile 6 x 6 with Bottom Tubes with King Boo Face Print Tile 6 x 6 with B...
Part #: 10202pr0008 White
Brick Special 1 x 2 with 2 Studs on 1 Side Brick Special 1 x...
Part #: 11211 Blue
Slope Curved 2 x 1 No Studs [1/2 Bow] Slope Curved 2 x ...
Part #: 11477 Reddish Brown
Brick Arch 1 x 3 x 3 [Gothic] Brick Arch 1 x 3 ...
Part #: 13965 Dark Brown
Tile 2 x 2 Corner Tile 2 x 2 Corner
Part #: 14719 Black
Tile 2 x 2 Corner Tile 2 x 2 Corner
Part #: 14719 Reddish Brown
Slope Curved 2 x 2 x 2/3 Slope Curved 2 x ...
Part #: 15068 Dark Orange
Brick Arch 1 x 6 x 2 - Thin Top without Reinforced Underside [New Version] Brick Arch 1 x 6 ...
Part #: 15254 Reddish Brown
Tile Round 2 x 2 with Hole Tile Round 2 x 2 ...
Part #: 15535 Tan
Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) Plate Special 1 x...
Part #: 15573 Black
Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) Plate Special 1 x...
Part #: 15573 Reddish Brown
Wedge Plate 4 Stud 45° Angle Plate Wedge Plate 4 Stu...
Part #: 15706 Reddish Brown
Technic Gear 20 Tooth Double Bevel with Axle Hole Type 1 [+ Opening] Technic Gear 20 T...
Part #: 18575 Tan
Plate Special 1 x 2 with Handles on Ends Plate Special 1 x...
Part #: 18649 Black
Brick Arch 1 x 3 x 2 Inverted [Inside Bow] Brick Arch 1 x 3 ...
Part #: 18653 Reddish Brown
Plate Special Round 2 x 2 with Center Stud (Jumper Plate) Plate Special Rou...
Part #: 18674 Reddish Brown
Plant, Flower Stem with Bar and 6 Stems Plant, Flower Ste...
Part #: 19119 Black
Bar 2L with Towball Bar 2L with Towball
Part #: 22484 Red
Slope Curved 2 x 1 Inverted Slope Curved 2 x ...
Part #: 24201 Blue
Plate 2 x 12 Plate 2 x 12
Part #: 2445 Dark Tan
Weapon Spear Tip with Fins Weapon Spear Tip ...
Part #: 24482 Black
Brick 1 x 2 x 5 with Hollow Studs Brick 1 x 2 x 5 w...
Part #: 2454b Dark Bluish Gray
Wedge Plate 2 x 2 Cut Corner Wedge Plate 2 x 2...
Part #: 26601 Reddish Brown
Wedge Plate 2 x 2 Cut Corner Wedge Plate 2 x 2...
Part #: 26601 Magenta
Technic Pin with Friction Ridges Lengthwise and Center Slots Technic Pin with ...
Part #: 2780 12× Black
Insect, Spider with Elongated Tail Section Insect, Spider wi...
Part #: 29111 Black
Brick 2 x 2 with Star with Eyes Print Brick 2 x 2 with ...
Part #: 3003pr0139 Blue
Brick 1 x 2 Brick 1 x 2
Part #: 3004 Dark Bluish Gray
Brick 1 x 2 Brick 1 x 2
Part #: 3004 Red
Brick 1 x 2 Brick 1 x 2
Part #: 3004 White
Brick 1 x 2 Brick 1 x 2
Part #: 3004 Black
Window 1 x 2 x 2 2/3 with Rounded Top Window 1 x 2 x 2 ...
Part #: 30044 Reddish Brown
Window 1 x 2 x 2 2/3 Pane Lattice Diamond with Rounded Top Window 1 x 2 x 2 ...
Part #: 30046 Pearl Gold
Brick 1 x 1 Brick 1 x 1
Part #: 3005 Dark Bluish Gray
Brick 1 x 6 Brick 1 x 6
Part #: 3009 White
Brick 1 x 4 Brick 1 x 4
Part #: 3010 White
Brick Special 1 x 2 Palisade [aka Log] Brick Special 1 x...
Part #: 30136 Reddish Brown
Brick Special 1 x 4 Palisade [aka Log] Brick Special 1 x...
Part #: 30137 Reddish Brown
Plate 2 x 4 Plate 2 x 4
Part #: 3020 Dark Tan
Plate 2 x 4 Plate 2 x 4
Part #: 3020 Dark Bluish Gray
Plate 2 x 3 Plate 2 x 3
Part #: 3021 Dark Tan
Plate 2 x 2 Plate 2 x 2
Part #: 3022 Reddish Brown
Plate 2 x 2 Plate 2 x 2
Part #: 3022 Light Bluish Gray
Plate 1 x 2 Plate 1 x 2
Part #: 3023 12× Dark Bluish Gray
Plate 1 x 2 Plate 1 x 2
Part #: 3023 Dark Azure
Plate 1 x 2 Plate 1 x 2
Part #: 3023 Dark Orange
Plate 1 x 2 Plate 1 x 2
Part #: 3023 Reddish Brown
Plate 1 x 2 Plate 1 x 2
Part #: 3023 Blue
Plate 1 x 2 Plate 1 x 2
Part #: 3023 Black
Brick Special 1 x 2 with Vertical Clip [Open O Clip] Brick Special 1 x...
Part #: 30237b Dark Bluish Gray
Brick Special 1 x 2 with Vertical Clip [Open O Clip] Brick Special 1 x...
Part #: 30237b Reddish Brown
Plate 2 x 8 Plate 2 x 8
Part #: 3034 White
Plate 2 x 8 Plate 2 x 8
Part #: 3034 Dark Tan
Plate 2 x 8 Plate 2 x 8
Part #: 3034 Light Bluish Gray
Slope 45° 2 x 1 with Bottom Pin Slope 45° 2 x 1 w...
Part #: 3040b Light Bluish Gray
Slope 45° 2 x 2 Double Convex Slope 45° 2 x 2 D...
Part #: 3045 Black
Brick Round 1 x 1 Open Stud Brick Round 1 x 1...
Part #: 3062b Reddish Brown
Tile 2 x 2 with Groove Tile 2 x 2 with G...
Part #: 3068b Dark Orange
Tile 2 x 2 with Star and Barcode Print (Sticker) Tile 2 x 2 with S...
Part #: 3068bpr0036 Blue
Tile 2 x 2 with King Boo and Barcode Print (Sticker) Tile 2 x 2 with K...
Part #: 3068bpr0052 Dark Azure
Tile 2 x 2 with Explosion and Barcode Print (Sticker) Tile 2 x 2 with E...
Part #: 3068bpr0053 Black
Tile 2 x 2 with Coin and Barcode Print (Sticker) Tile 2 x 2 with C...
Part #: 3068bpr0060 Light Bluish Gray
Tile 2 x 2 with Goomba Face with Low Furrowed Brow and Curved Mouth Print Tile 2 x 2 with G...
Part #: 3068bpr0439 Dark Orange
Tile 2 x 2 with Goomba and Barcode Print (Sticker) Tile 2 x 2 with G...
Part #: 3068bpr9978 Dark Orange
Tile 1 x 2 with Groove Tile 1 x 2 with G...
Part #: 3069b Reddish Brown
Tile 1 x 1 with Groove Tile 1 x 1 with G...
Part #: 3070b Black
Technic Brick 1 x 2 [2 Pin Holes] Technic Brick 1 x...
Part #: 32000 Black
Technic Pin 3/4 Technic Pin 3/4
Part #: 32002 Tan
Plate Special 1 x 2 with Door Rail Plate Special 1 x...
Part #: 32028 Light Bluish Gray
Technic Axle 2 Notched Technic Axle 2 No...
Part #: 32062 Red
Technic Beam 1 x 6 Thin Technic Beam 1 x ...
Part #: 32063 Black
Technic Axle 5 Technic Axle 5
Part #: 32073 Light Bluish Gray
Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced Technic Bush 1/2 ...
Part #: 32123b Yellow
Technic Gear 12 Tooth Double Bevel Technic Gear 12 T...
Part #: 32270 Black
Brick 1 x 2 x 2 with Inside Stud Holder Brick 1 x 2 x 2 w...
Part #: 3245c Reddish Brown
Technic Beam 1 x 3 Thick Technic Beam 1 x ...
Part #: 32523 White
Technic Worm Gear Type 2 Technic Worm Gear...
Part #: 32905 Light Bluish Gray
Brick Special 1 x 1 x 1 2/3 with Studs on 1 Side Brick Special 1 x...
Part #: 32952 Light Bluish Gray
Slope 33° 3 x 2 Slope 33° 3 x 2
Part #: 3298 Black
Technic Gear 20 Tooth Double Bevel with Clutch on Both Sides Technic Gear 20 T...
Part #: 35185 Blue
Brick Arch 1 x 4 Brick Arch 1 x 4
Part #: 3659 Reddish Brown
Slope Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Slope Inverted 45...
Part #: 3660 White
Plate 1 x 6 Plate 1 x 6
Part #: 3666 Light Bluish Gray
Technic Pin without Friction Ridges Lengthwise Technic Pin witho...
Part #: 3673 Light Bluish Gray
Slope 33° 3 x 3 Double Convex Slope 33° 3 x 3 D...
Part #: 3675 Black
Technic Brick 1 x 2 [1 Pin Hole] Technic Brick 1 x...
Part #: 3700 White
Technic Axle 4 Technic Axle 4
Part #: 3705 Red
Technic Plate 2 x 4 [3 Holes] Technic Plate 2 x...
Part #: 3709 Black
Plate 1 x 4 Plate 1 x 4
Part #: 3710 Black
Brick Curved 1 x 2 x 1 No Studs Brick Curved 1 x ...
Part #: 37352 White
Technic Plate 2 x 8 [7 Holes] Technic Plate 2 x...
Part #: 3738 Light Bluish Gray
Technic Gear Rack 1 x 4 Technic Gear Rack...
Part #: 3743 White
Window Pane Latticed 1 x 2 x 2 Window Pane Latti...
Part #: 38320 Pearl Gold
Technic Brick 1 x 6 [5 Pin Holes] Technic Brick 1 x...
Part #: 3894 Dark Bluish Gray
Crown / Flower / Egg Shell Half Crown / Flower / ...
Part #: 39262 Pearl Gold
Brick Round 2 x 2 with Axle Hole Brick Round 2 x 2...
Part #: 3941 Lime
Plate 6 x 6 Plate 6 x 6
Part #: 3958 White
Technic Pin Long without Friction Ridges, with Anti-Roll Notch Technic Pin Long ...
Part #: 39888 Tan
Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Plate Round 2 x 2...
Part #: 4032a Blue
Technic Beam 1 x 9 Thick Technic Beam 1 x ...
Part #: 40490 Black
Plate Special 1 x 4 with 2 Studs with Groove [New Underside] Plate Special 1 x...
Part #: 41740 Black
Brick Special 1 x 2 with Groove Brick Special 1 x...
Part #: 4216 Reddish Brown
Technic Driving Ring Connector Smooth [2 rounded and 2 flat side walls] Technic Driving R...
Part #: 42195 Light Bluish Gray
Gate 1 x 4 x 9 Arched with Bars and Three Studs Gate 1 x 4 x 9 Ar...
Part #: 42448 Black
Technic Pin 1/2 Technic Pin 1/2
Part #: 4274 Blue
Slope 33° 3 x 1 Slope 33° 3 x 1
Part #: 4286 Dark Tan
Hinge Plate 2 x 4 with Pin Hole with 2 Holes - Top Hinge Plate 2 x 4...
Part #: 43045 Light Bluish Gray
Hinge Plate 2 x 4 with Pin Hole with 2 Holes - Bottom Hinge Plate 2 x 4...
Part #: 43056 Light Bluish Gray
Bracket 1 x 2 - 2 x 2 Bracket 1 x 2 - 2...
Part #: 44728 White
Technic Axle 3 Technic Axle 3
Part #: 4519 Yellow
Slope 30° 1 x 1 x 2/3 (Cheese Slope) Slope 30° 1 x 1 x...
Part #: 54200 Dark Azure
Slope 30° 1 x 1 x 2/3 (Cheese Slope) Slope 30° 1 x 1 x...
Part #: 54200 Dark Brown
Technic Axle Connector Smooth [with x Hole + Orientation] Technic Axle Conn...
Part #: 59443 Black
Plate Special 1 x 2 with Clips Horizontal [Open O Clips] Plate Special 1 x...
Part #: 60470b Yellow
Brick Special 1 x 1 with Clip Vertical [Open O Clip, Hollow Stud] Brick Special 1 x...
Part #: 60475b Dark Bluish Gray
Slope 65° 2 x 1 x 2 Slope 65° 2 x 1 x 2
Part #: 60481 Dark Brown
Technic Beam 1 x 2 Thick with Pin Hole and Axle Hole Technic Beam 1 x ...
Part #: 60483 Dark Bluish Gray
Plate Special 1 x 1 with Clip Vertical [Thick Open O Clip] Plate Special 1 x...
Part #: 60897 Blue
Plate Round 1 x 1 with Solid Stud Plate Round 1 x 1...
Part #: 6141 Light Bluish Gray
Technic Pin Connector Round [Slotted] Technic Pin Conne...
Part #: 62462 Black
Tile 1 x 3 Tile 1 x 3
Part #: 63864 Dark Tan
Door 1 x 4 x 6 Round Top with Window and Keyhole, Reinforced Edge Door 1 x 4 x 6 Ro...
Part #: 64390 Dark Brown
Technic Brick 1 x 1 with Pin Hole Technic Brick 1 x...
Part #: 6541 Reddish Brown
Plate Round Corners 6 x 6 x 2/3 Circle with Reduced Knobs Plate Round Corne...
Part #: 66789 Dark Orange
Plate Round Corners 8 x 8 x 2/3 Circle with Reduced Knobs Plate Round Corne...
Part #: 66790 Dark Orange
Plate Round Corners 4 x 4 x 2/3 Circle with Reduced Knobs Plate Round Corne...
Part #: 66792 Dark Orange
Plate Round Corners 4 x 4 x 2/3 Circle with Reduced Knobs Plate Round Corne...
Part #: 66792 Reddish Brown
Plate Round Corners 4 x 4 x 2/3 Circle with Reduced Knobs Plate Round Corne...
Part #: 66792 Light Bluish Gray
Feet, 2 x 2 x 2/3 with 4 Studs on Top Feet, 2 x 2 x 2/3...
Part #: 66858 Reddish Brown
Brick Special 1 x 2 x 1 2/3 with 8 Studs on 3 Sides Brick Special 1 x...
Part #: 67329 Dark Bluish Gray
Brick Round Corner 2 x 2 Macaroni with Stud Notch and Reinforced Underside [New Style] Brick Round Corne...
Part #: 85080 Reddish Brown
Slope 30° 1 x 2 x 2/3 Slope 30° 1 x 2 x...
Part #: 85984 Black
Technic Axle 4 with Stop Technic Axle 4 wi...
Part #: 87083 Dark Bluish Gray
Plate Special 2 x 2 with Center Stud (Jumper) with Two Black Curved Lines Print Plate Special 2 x...
Part #: 87580pr0002 Dark Azure
Wedge 2 x 2 Facet Wedge 2 x 2 Facet
Part #: 87620 Dark Bluish Gray
Brick Arch 1 x 3 x 2 Brick Arch 1 x 3 x 2
Part #: 88292 Reddish Brown
Window 1 x 2 x 2 Castle Window 1 x 2 x 2 ...
Part #: 90195 Dark Bluish Gray
Insect Accessory, Spider Web, Hanging Insect Accessory,...
Part #: 90981 White
Brick Arch 1 x 6 Raised Arch Brick Arch 1 x 6 ...
Part #: 92950 Reddish Brown
Slope Curved 4 x 2 No Studs Slope Curved 4 x ...
Part #: 93606 Dark Bluish Gray
Tile Round 1 x 1 Tile Round 1 x 1
Part #: 98138 Red
Brick Special 1 x 2 with Masonry Brick Profile Brick Special 1 x...
Part #: 98283 Dark Bluish Gray
Slope 75° 2 x 2 x 3 [Solid Studs] Slope 75° 2 x 2 x...
Part #: 98560 Dark Bluish Gray
Bracket 1 x 2 - 2 x 2 Inverted Bracket 1 x 2 - 2...
Part #: 99207 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.

💎 Notable Parts

Dark Azure Slope 30° 1 x 1 x 2/3 (Cheese Slope) (8x) $1.20
Reddish Brown Brick Special 1 x 4 Palisade [aka Log] (7x) $1.75
Magenta Wedge Plate 2 x 2 Cut Corner (8x) $1.00
Est. BrickLink Part Value
$3.95

💡 MOC Potential

🏰 Adapt the haunted yard into a small castle courtyard.
🧙 Rebuild King Boo's platform into a wizard's tower.
🌳 Use the reddish-brown and dark bluish gray parts to create a gnarled, spooky tree.

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.

What the Community Says

1 YouTube reviews
BlockTalk AI Summary

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.

Community Content: These reviews are from Reddit and YouTube users sharing their personal experiences. Opinions may vary.

📖 Building Instructions 3

King Boo and the Haunted Yard Expansion Set Instructions
71377_A_ALT_BI_LOW
Download PDF
King Boo and the Haunted Yard Expansion Set Instructions
BI 3101, 8, 71377 V39
Download PDF
King Boo and the Haunted Yard Expansion Set Instructions
BI 3101, 8, 71377 V29
Download PDF

Charts Inventory Statistics

125
Unique Parts
431
Total Pieces
0
Minifigures
Inventory Version: 1