How many pieces does the LEGO King Boo and the Haunted Yard Expansion Set (71377-1) have?

The LEGO King Boo and the Haunted Yard Expansion Set set (71377-1) contains 431 pieces. It was released in 2020 as part of the LEGO Super Mario theme.

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Can I build the LEGO King Boo and the Haunted Yard Expansion Set with parts I already have?

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What theme is the LEGO King Boo and the Haunted Yard Expansion Set from?

The LEGO King Boo and the Haunted Yard Expansion Set (71377-1) belongs to the LEGO Super Mario theme. You can browse all Super Mario sets on BrickMissing to find more sets from this theme.

King Boo and the Haunted Yard Expansion Set

🏷️ 71377-1•🎨 Super Mario•📅 2020•🧱 431 parts•Intermediate

The LEGO Super Mario 71377-1 King Boo and the Haunted Yard Expansion Set presents Mario with a series of spectral challenges. This 431-piece set includes a King Boo figure, two Goombas, and four Swoops, depicting a haunted yard from the Super Mario universe. Players begin by stomping on Goombas and a spider web to progress through the area. A flip-tree element then activates, revealing more of the grounds and leading to spinning Swoops that must be engaged. The ultimate goal is to topple King Boo, uncovering a Super Star. This set requires the LEGO Super Mario Starter Course (71360) for full interactive functionality.

Parts Inventory

🧱 431 parts

Part	Color	Qty
Tile 6 x 6 with Bottom Tubes with King Boo Face Print 10202pr0008	White	1×
Brick Special 1 x 2 with 2 Studs on 1 Side 11211	Black	4×
Slope Curved 2 x 1 No Studs [1/2 Bow] 11477	Reddish Brown	8×
Brick Arch 1 x 3 x 3 [Gothic] 13965	Dark Brown	2×
Tile 2 x 2 Corner 14719	Reddish Brown	1×
Tile 2 x 2 Corner 14719	Black	2×
Slope Curved 2 x 2 x 2/3 15068	Dark Orange	4×
Brick Arch 1 x 6 x 2 - Thin Top without Reinforced Underside [New Version] 15254	Reddish Brown	2×
Tile Round 2 x 2 with Hole 15535	Tan	1×
Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) 15573	Reddish Brown	2×

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

Build DNA

Parts inventory insights for King Boo and the Haunted Yard Expansion Set

431 pieces puts this build +4% against the average Super Mario set and -4% against the average 2020 release.

LEGOSUPER MARIO

Vs average Super Mario set

+4%+18 parts

This set431

Average set413

Average Super Mario set: 413 pieces across 120 other sets.

Vs average 2020 set

-4%-17 parts

This set431

Average set448

Average 2020 set: 448 pieces across 450 other sets.

Color profile

16different colors

Dominant color

Black

Black114x

26%

Reddish Brown82x

19%

Dark Bluish Gray64x

15%

White36x

Unique parts

3.4 pieces per unique type

125

Repeat factor

Average pieces per unique type.

Most used part

Plate 1 x 2

27x

Results are based on official LEGO part inventories. Accuracy improves as you confirm set completeness.

This site is not affiliated with or endorsed by the LEGO Group.

Build Insights🧩125unique parts🎨16different colors📊26.9avg. parts per color🏆27×Plate 1 x 2

🎨 All Super Mario sets 📅 All sets from 2020

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