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.

How can I find missing parts for LEGO set 71377-1?

On BrickMissing you can check which parts from the LEGO King Boo and the Haunted Yard Expansion Set (71377-1) you already own. Add your LEGO collection and we'll show exactly which of the 431 pieces you're missing and which you already have.

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

Use BrickMissing's free parts checker to find out. Add LEGO sets you own to your collection and we'll cross-reference all 431 parts to show your buildability percentage and which specific pieces you still need.

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 - View 8

King Boo and the Haunted Yard Expansion Set

71377-1 Super Mario 2020 431 parts 6.9% repair risk 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	LEGO price each
Tile 6 x 6 with Bottom Tubes with King Boo Face Print 10202pr0008	White	1×	Check price → View
Brick Special 1 x 2 with 2 Studs on 1 Side 11211	Black	4×	€0,13 View at LEGO → View
Slope Curved 2 x 1 No Studs [1/2 Bow] 11477	Reddish Brown	8×	€0,06 View at LEGO → View
Brick Arch 1 x 3 x 3 [Gothic] 13965	Dark Brown	2×	€0,21 View at LEGO → View
Tile 2 x 2 Corner 14719	Reddish Brown	1×	€0,06 View at LEGO → View
Tile 2 x 2 Corner 14719	Black	2×	€0,06 View at LEGO → View
Slope Curved 2 x 2 x 2/3 15068	Dark Orange	4×	€0,13 View at LEGO → View
Brick Arch 1 x 6 x 2 - Thin Top without Reinforced Underside [New Version] 15254	Reddish Brown	2×	€0,27 View at LEGO → View
Tile Round 2 x 2 with Hole 15535	Tan	1×	€0,07 View at LEGO → View
Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) 15573	Reddish Brown	2×	€0,06 View at LEGO → View
Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) 15573	Black	2×	€0,06 View at LEGO → View
Wedge Plate 4 Stud 45° Angle Plate 15706	Reddish Brown	4×	€0,22 View at LEGO → View

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Repairability

Can you fix King Boo and the Haunted Yard Expansion Set if a piece goes missing?

6.9%Moderate repair risk

easy to fixguard this box

10 of the 144 part+color combinations in this set appear in 3 or fewer sets ever made. Lose one of those and a replacement is very hard to find.

Theme average

9.3%

All sets

6.7%

Hardest to replace

Tile 6 x 6 · White · only this setBar 2L · Red · only this setTile 2 x 2 · Dark Azure · only this set

How we calculate this →

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