How many pieces are in the Mermaid Gabby's Aquarium Adventure?

Mermaid Gabby's Aquarium Adventure contains 103 pieces.

What age is the Mermaid Gabby's Aquarium Adventure recommended for?

This set is recommended for ages 4+.

When was the Mermaid Gabby's Aquarium Adventure released?

Mermaid Gabby's Aquarium Adventure was released in 2025.

LEGO Mermaid Gabby's Aquarium Adventure set 11204

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🏛 Gabby's Dollhouse

Set #11204

Mermaid Gabby's Aquarium Adventure

Mermaid Gabby's Aquarium Adventure is an enchanting underwater playset.

Before you buy

Who it's for: Ages 4+ · Beginner build Young children and Gabby's Dollhouse fans
Build: 103 pieces · about 1 hours Build time is an estimate.
Price: $22.99 list price · 22.3¢ per piece
Availability: Retired at LEGO

★★★★☆ 4.2 AI-generated review score, not a customer rating

Fans appreciate the set's vibrant colors, cute minifigures, and playability. Some find the build too simple and wish for more unique elements, but overall it's considered a fun and engaging set for younger builders.

$22.99

Check price on eBay

📝 Our Take

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

Mermaid Gabby's Aquarium Adventure is an enchanting underwater playset. This set perfectly captures the whimsical charm of Gabby's Dollhouse, bringing the magic of the show to life with vibrant colors and adorable characters.

This set is perfect for young children and fans of Gabby's Dollhouse. With easy-to-follow instructions and a manageable piece count, it offers a delightful building experience and endless imaginative play opportunities.

Skip this if you're looking for a challenging build or intricate details. Consider the larger Gabby's Dollhouse sets for a more complex building experience and expanded play features.

✨ New

Ask BlockTalk about this set

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Try asking:

How does this set compare to other Gabby's Dollhouse LEGO sets? What are some creative ways to expand the aquarium build? Is this set a good value for the price? Where is the best place to display this set?

🧱 Building Experience

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

🧩

103

Pieces

⏱

1.0h

Estimated Build Time

📊

Beginner

Difficulty

📏

15cm × 23cm × 7cm

Dimensions

Build Highlights:

Simple and easy-to-follow instructions
Colorful and engaging design
Features interactive elements for imaginative play
Includes adorable characters from the show

📈 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

C+

Investment Grade

⏳ Retired

Mermaid Gabby's Aquarium Adventure presents a moderate investment opportunity. As a licensed set from a popular children's show, it benefits from built-in demand and brand recognition. The relatively low piece count and price point make it accessible to a wide audience. However, its mass-market appeal may limit significant appreciation. While it's unlikely to become a highly sought-after collector's item, it should hold its value reasonably well, especially if kept in pristine condition. The inclusion of unique minifigures could also contribute to its long-term value.

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

⚖ Compare Similar Sets

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Mermaid Gabby's Aquarium Adventure is a great entry point into the Gabby's Dollhouse LEGO theme. Compared to larger sets like Gabby's Dollhouse (10788-1), this set is more affordable and easier to build. If you're looking for a more complex and detailed build, Gabby's Dollhouse might be a better choice, but for younger builders or those new to LEGO, Mermaid Gabby's Aquarium Adventure is an excellent option.

3 Minifigures Included

Features three adorable characters: MerCat, Gabby with a mermaid tail, and Kitty Jellyfish. Gabby's mermaid tail is a unique element, potentially increasing the figure's collectibility.

📦 Parts Inventory

Official piece count: 103
Parts cataloged in this inventory: 55 unique parts, 105 pieces
Minifigures: 3

LEGO counts 103 pieces. This inventory comes from a separate parts catalog and lists 114, including the 9 parts inside the minifigures; the two do not always count the same elements, so their totals differ. Spare parts are counted in neither figure.

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

Part #: 13965 4× Medium Azure

Brick Sloped 45° ...

Part #: 15571 2× Blue

Plate Special 1 x...

Part #: 15573 1× Dark Pink

Rock - Heart Jewe...

Part #: 15745 1× Trans-Dark Pink

Brick Arch 1 x 8 ...

Part #: 16577 2× Tan

Brick Curved 1 x ...

Part #: 18653 2× Medium Azure

Plate Special Rou...

Part #: 18674 2× Dark Pink

Windscreen 4 x 4 ...

Part #: 18990 1× Trans-Light Blue

Bar Holder with H...

Part #: 23443 1× Blue

Tile Special 1 x ...

Part #: 2412b 1× Dark Azure

Tile 1 x 4 with G...

Part #: 2431 2× Medium Azure

Plate Special 8 x...

Part #: 2628 1× Blue

Slide Curved Left...

Part #: 28387 1× Medium Azure

Brick 2 x 3

Part #: 3002 1× Tan

Brick 1 x 1

Part #: 3005 4× Medium Azure

Brick 1 x 4

Part #: 3010 2× Tan

Plate 2 x 4

Part #: 3020 2× Light Aqua

Plate 2 x 3

Part #: 3021 2× Medium Azure

Plate 1 x 2

Part #: 3023 2× Light Aqua

Part #: 30367c 2× Opal Trans-Dark Pink

Brick Round 2 x 2...

Part #: 30367c 3× Trans-Light Blue

Tile 1 x 2 with G...

Part #: 3069b 1× Blue

Tile 1 x 2 with G...

Part #: 3069b 4× Dark Azure

Brick 1 x 2 x 2 w...

Part #: 3245c 2× Tan

Plant, Plate 1 x ...

Part #: 32607 3× Lime

Brick Sloped 65° ...

Part #: 3678b 2× Tan

Plate 1 x 4

Part #: 3710 1× Light Aqua

Brick Curved 1 x ...

Part #: 37352 2× Medium Azure

Brick Curved 1 x ...

Part #: 37352 1× Light Aqua

Plate 2 x 6

Part #: 3795 1× Medium Azure

Crown / Flower / ...

Part #: 39262 2× Medium Lavender

Plate 8 x 8 with ...

Part #: 41948 2× Blue

Plate Special 1 x...

Part #: 44861 3× Blue

Plant, Flower 2 x...

Part #: 4727 2× Bright Green

Treasure Chest Bo...

Part #: 4738c 1× Medium Lavender

Tile Special 2 x ...

Part #: 49153 1× Black

Animal / Plant, C...

Part #: 49577 2× Coral

Animal, Sea Life ...

Part #: 49595a 1× Vibrant Yellow

Animal, Sea Life ...

Part #: 49595b 1× Vibrant Yellow

Animal, Sea Life ...

Part #: 49595c 2× Vibrant Yellow

Animal, Sea Life ...

Part #: 49595d 2× Vibrant Yellow

Animal, Sea Life ...

Part #: 49595e 2× Vibrant Yellow

Animal, Sea Life ...

Part #: 49595f 2× Vibrant Yellow

Animal, Sea Life ...

Part #: 49595g 2× Vibrant Yellow

Tube, Slide Straight

Part #: 49736 1× Trans-Bright Green

Plant, Flower, Pe...

Part #: 5904 2× Trans-Yellow

Panel 1 x 6 x 5 w...

Part #: 59349pr0034 1× Trans-Light Blue

Cone 1 x 1 [Top G...

Part #: 59900 2× Trans-Light Blue

Part #: 79491 2× White

Animal Body Part ...

Part #: 80497 2× Dark Pink

Treasure Chest Li...

Part #: 80835 1× White

Brick Round 4 x 4...

Part #: 87081 1× Tan

Plate Special 2 x...

Part #: 87580 1× Medium Azure

The set offers a nice selection of Medium Azure and Tan elements, useful for builders creating ocean-themed MOCs. The inclusion of Trans-Light Blue dome pieces adds visual interest.

🛒 Where to Buy

eBay

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💎 Notable Parts

Dark Azure Tile 1 x 2 with Groove (4x) $0.40

Medium Azure Brick Arch 1 x 3 x 3 [Gothic] (4x) $0.60

Trans-Light Blue Brick Round 2 x 2 Dome Top, Hollow Stud (3x) $0.75

Tan Brick Arch 1 x 8 x 2 Raised (2x) $0.50

Lime Plant, Plate 1 x 1 Round with 3 Leaves (3x) $0.45

Est. BrickLink Part Value

$2.70

💡 MOC Potential

🌳 Coral reef expansion with more sea creatures

🏙 Underwater city section for LEGO City layouts

🚢 Miniature submarine or research vessel

📰 Set News

Community Insights

Real opinions from Reddit and YouTube

What Reddit Says

No Reddit discussions found for this set.

What YouTubers Say

Based on 5 videos

3.0 /5

Mixed

0% positive

BlockTalk AI

YouTube reviewers express initial excitement for LEGO Mermaid Gabby's Aquarium Adventure (11204), particularly its potential as a buildable and customizable dollhouse. Reviewers are intrigued by the unique design elements, like the cat-ear-shaped room and the mermaid minidoll with kitty ears, but overall sentiment is neutral.

Mermaid Gabby's Aquarium Adventure 🧜‍♀️😻 LEGO build & review

ellieV • 68.1K views Review

Community Sentiment

Based on 5 YouTube reviews

Not enough Reddit data

YouTube

3.0 /5

Mixed

0% positive

Positive

Mixed

Critical

BlockTalk AI Analysis

What the Community Says

1 YouTube reviews

BlockTalk AI Summary

ellieV highlights the set's innovative approach to a buildable dollhouse, emphasizing the customizability of the rooms. Gabby's Dollhouse channel showcases an unboxing and build of the LEGO set, inviting viewers to explore the features and design of the product.