The Mushroom Island

LEGO^® Minecraft® 21129 The Mushroom Island

Name: LEGO® Minecraft® The Mushroom Island 21129
Brand: LEGO
SKU: 21129
Availability: InStock

Current best price

Market value (new, sealed) on November 9, 2026: $60.56 – 203% above RRP ($19.99).

LEGO 21129 is currently available from $100.00 incl. shipping at Walmart.com. Only one retailer in our comparison stocks it.

View the deal at Walmart.com

Updated November 9, 2026 at 12:01 AM EST

LEGO® Minecraft® The Mushroom Island 21129 (1/8)

Island

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LEGO 21129 price comparison: where is it cheapest?

Prices incl. shipping to the US · Prices updated November 9, 2026 at 12:01 AM EST

Walmart.comBest price

$100.00

free shipping

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iFurther information

The Lego set The Mushroom Island with the set number 21129 is part of the LEGO Minecraft® theme and is recommended for ages 8+. It was released in March 2017. It includes 2 minifigures. The model has 247 pieces, and we estimate it takes around < 1 hour to build. It was designed by Max Valembois.35 Brickfact users have this set in their collection.

The set weighs about 0.490 kg. The box measures 10.3 x 7.5 x 2.8 in (26.2 x 19.1 x 7.2 cm). The recommended retail price is $19.99.

Our Brickfact Lego price comparison compares the prices of 1 shop for this set. It is currently cheapest at Walmart.com for $100.00 including shipping. That is $0.40 per piece. Unfortunately, the set is currently not available below its recommended retail price.

The Part-Out-Value (POV) is the sum of the average prices paid on bricklink.com for all parts of this set. It is about $27.27.

Lego 21129 product data

Set Information

Set ID

21129

Theme

Minecraft®

Pieces

247

Designer

Max Valembois

Building Time

< 1 hour

Age Range

Minifigures

Availability

Release

03/2017

Retiring Status

Retired (12/2018)

Price Information

RRP

$19.99

Insiders Points (for purchase at Lego)

130

Part Out Value

$27.27

Packaging

Weight

0.490 kg

Packaging dimensions

10.3 x 7.5 x 2.8 in

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Popularity with Brickfact users

users have this set: 35

35 Brickfact users have The Mushroom Island in their collection.

Based on anonymized Brickfact user collections; shown only for sets with at least 10 users. As of November 9, 2026.

LEGO 21129 price trend

Average sale price on secondary marketplaces – not the new price at retailers.

Current market value: $60.56
Growth vs. RRP: +203 % $19.99
Range: $44.93 – $60.94
Average: $50.02

Loading price history…

LEGO 21129 price history: how has the price changed?

Brickfact has been recording retailer prices since 11/01/2026. Best price so far: $100.00 (8 days ago).

Current best price: $100.00 +400% vs. RRP
Best price since 11/01/2026: $100.00 +400% vs. RRP · 8 days ago

Lowest price per retailer (since 11/01/2026)

Retailer	Current	Lowest price	Date
Walmart.com	$100.00	$100.00	11/09/26

As of: 11/09/2026, 04:01 UTC

Lowest price per day that Brickfact recorded at the retailers in the price comparison, including shipping where known – as in the comparison above. Amazon offers are not included in the price history.

Minifigures from 21129 The Mushroom Island

The The Mushroom Island set includes 2 different minifigures, 0 of which are unique to this set. The combined value of the minifigures is $2.79, which is ~14% of the RRP of this set.

Creeper

Minecraft

2014

#min012

$1.56

22 sets

Alex

Minecraft

2015

#min017

$1.23

19 sets

Official Set Description for LEGO 21129 The Mushroom Island

Sail out on a new Minecraft™ adventure to discover The Mushroom Island, mine vital supplies, grow crops and nurture the mooshroom and her baby. Enjoy hands-on Minecraft adventures featuring your favorite characters and objects with this easy-to-reconfigure, modular LEGO® Minecraft set, complete with explosion function—designed for young fans of the highly successful sandbox video game. Includes an Alex minifigure and a Creeper™.

Includes an Alex minifigure, plus a mooshroom, baby mooshroom and a Creeper™.
Features a Minecraft™ Mushroom Island with a huge red mushroom, huge brown mushroom, buildable boat and crafting table, and an animal pen with exploding fence function.
Activate the exploding Creeper™ function to blast open the animal pen.
Accessory elements include Alex’s pickaxe and a compass.
Easy-to-reconfigure modular design with three alternative model configurations.
Set your imagination free—rebuild the set for more LEGO® Minecraft™ creations!
This set includes over 240 pieces and offers an age-appropriate build and play experience for ages 8+.
Measures over 4” (11cm) high, 7” (20cm) wide and 7” (19cm) deep.

Building Instruction for LEGO 21129 The Mushroom Island

Part Lists for LEGO 21129 The Mushroom Island

Part list on Bricklink.com

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Part list on Rebrickable.com

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Part list on Brickset.com

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LEGO 21129 Frequently Asked Questions

How much does LEGO 21129 The Mushroom Island cost?

On November 9, 2026, the lowest price in the Brickfact price comparison is $100.00 incl. shipping at Walmart.com. The RRP is $19.99.

Where can I buy LEGO 21129 cheapest?

Only one retailer in the Brickfact price comparison currently stocks LEGO 21129: Walmart.com ($100.00).

Is LEGO 21129 still available?

LEGO has retired 21129 The Mushroom Island. New copies are still available at 1 retailers in our price comparison while stocks last.

When was LEGO 21129 cheapest?

Since tracking began on 11/01/2026, the lowest shop price recorded by Brickfact for LEGO 21129 was $100.00 on 11/01/2026 at Walmart.com, including shipping. Amazon prices are not included.