How many pieces does the LEGO Mermaid Gabby's Aquarium Adventure (11204-1) have?

The LEGO Mermaid Gabby's Aquarium Adventure set (11204-1) contains 114 pieces. It was released in 2025 as part of the LEGO Gabby's Dollhouse theme.

How can I find missing parts for LEGO set 11204-1?

On BrickMissing you can check which parts from the LEGO Mermaid Gabby's Aquarium Adventure (11204-1) you already own. Add your LEGO collection and we'll show exactly which of the 114 pieces you're missing and which you already have.

Can I build the LEGO Mermaid Gabby's Aquarium Adventure 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 114 parts to show your buildability percentage and which specific pieces you still need.

What theme is the LEGO Mermaid Gabby's Aquarium Adventure from?

The LEGO Mermaid Gabby's Aquarium Adventure (11204-1) belongs to the LEGO Gabby's Dollhouse theme. You can browse all Gabby's Dollhouse sets on BrickMissing to find more sets from this theme.

Mermaid Gabby's Aquarium Adventure - View 9

Mermaid Gabby's Aquarium Adventure

🏷️ 11204-1•🎨 Gabby's Dollhouse•📅 2025•🧱 114 parts•Easy

Explore an aquatic realm with LEGO Gabby's Dollhouse 11204-1 Mermaid Gabby's Aquarium Adventure, a 114-piece set from 2025. This scene presents the Gabby minidoll in her mermaid outfit, joined by MerCat and a Jellyfish figure. The set constructs a vibrant underwater environment, detailing it with shells, various plants, and sea life, ready for discovery. Characters can utilize a slide for descent or MerCat can occupy a bubble sphere designed for her to 'float'. An interactive coral element pivots, revealing a hidden treasure chest. The model’s assembly benefits from a large Starter Brick, simplifying the initial construction of its structures. This set accurately portrays an adventure from DreamWorks Animation’s Gabby’s Dollhouse: The Movie.

Parts Inventory

🧱 114 parts

Part	Color	Qty
Slope Curved 2 x 1 No Studs [1/2 Bow] 11477	Tan	1×
Brick Arch 1 x 3 x 3 [Gothic] 13965	Medium Azure	4×
Brick Arch 1 x 3 x 3 [Gothic] 13965	Tan	4×
Slope 45° 2 x 1 Triple with Inside Stud Holder 15571	Black	2×
Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) 15573	Dark Pink	1×
Rock - Heart Jewel with Shaft 15745	Trans-Dark Pink	1×
Brick Arch 1 x 8 x 2 Raised 16577	Tan	2×
Brick Arch 1 x 3 x 2 Inverted [Inside Bow] 18653	Medium Azure	2×
Plate Special Round 2 x 2 with Center Stud (Jumper Plate) 18674	Dark Pink	2×
Windscreen 4 x 4 x 1 2/3 Canopy Half Sphere with Handle 18990	Trans-Light Blue	1×

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Rock - Heart Jewel with Shaft	15745	Trans-Dark Pink	1×
Brick Arch 1 x 8 x 2 Raised	16577	Tan	2×
Brick Arch 1 x 3 x 2 Inverted [Inside Bow]	18653	Medium Azure	2×
Plate Special Round 2 x 2 with Center Stud (Jumper Plate)	18674	Dark Pink	2×
Windscreen 4 x 4 x 1 2/3 Canopy Half Sphere with Handle	18990	Trans-Light Blue	1×
Bar Holder with Hole and Bar Handle	23443	Black	1×
Tile Special 1 x 2 Grille with Bottom Groove	2412b	Dark Azure	1×
Tile 1 x 4 with Groove	2431	Medium Azure	2×
Plate Special 8 x 8 x 2/3 with Four 1 x 4 Recessed Edges	2628	Black	1×
Slide Curved Left 90°	28387	Medium Azure	1×
Brick 2 x 3	3002	Tan	1×
Brick 1 x 1	3005	Medium Azure	4×
Brick 1 x 4	3010	Tan	2×
Plate 2 x 4	3020	Light Aqua	2×
Plate 2 x 3	3021	Medium Azure	2×
Plate 1 x 2	3023	Light Aqua	2×
Plate 4 x 4	3031	Tan	1×
Plate 2 x 8	3034	Tan	2×
Brick Round 2 x 2 Dome Top, Hollow Stud	30367c	Opal Trans-Dark Pink	2×
Brick Round 2 x 2 Dome Top, Hollow Stud	30367c	Trans-Light Blue	3×
Tile 1 x 2 with Groove	3069b	Black	1×
Tile 1 x 2 with Groove	3069b	Dark Azure	4×
Brick 1 x 2 x 2 with Inside Stud Holder	3245c	Tan	2×
Plant, Plate 1 x 1 Round with 3 Leaves	32607	Lime	3×
Slope 65° 2 x 2 x 2 with Bottom Tube	3678b	Tan	2×
Plate 1 x 4	3710	Light Aqua	1×
Brick Curved 1 x 2 x 1 No Studs	37352	Light Aqua	1×
Brick Curved 1 x 2 x 1 No Studs	37352	Medium Azure	2×
Plate 2 x 6	3795	Medium Azure	1×
Crown / Flower / Egg Shell Half	39262	Medium Lavender	2×
Plate 8 x 8 with Rounded End	41948	Black	2×
Plate Special 1 x 2 [Open O Top Clip]	44861	Black	3×
Plant, Flower 2 x 2 Leaves - Angular	4727	Bright Green	2×
Treasure Chest Bottom with Rear Slots, No Groove	4738c	Medium Lavender	1×
Tile Special 2 x 2 with Top Pin [Squared Holes]	49153	Black	1×
Animal / Plant, Coral / Sea Weed	49577	Coral	2×
Animal, Sea Life Set, Octopus	49595a	Vibrant Yellow	1×
Animal, Sea Life Set, Clam Shell Large	49595b	Vibrant Yellow	1×
Animal, Sea Life Set, Star Fish	49595c	Vibrant Yellow	2×
Animal, Sea Life Set, Clam Shell Small	49595d	Vibrant Yellow	2×
Animal, Sea Life Set, Fish with Bar	49595e	Vibrant Yellow	2×
Animal, Sea Life Set, Snail with Bar	49595f	Vibrant Yellow	2×
Animal, Sea Life Set, Seahorse with Bar	49595g	Vibrant Yellow	2×
Tube, Slide Straight	49736	Trans-Bright Green	1×
Plant, Flower, Peony Rose with 2 Layers	5904	Trans-Yellow	2×
Panel 1 x 6 x 5 with Under Sea, Coral Coral, Seahorse, Lime Squid, Rocks, Bubbles print	59349pr0034	Trans-Light Blue	1×
Cone 1 x 1 [Top Groove]	59900	Trans-Light Blue	2×
Brick Arch 1 x 4 x 2	6182	Tan	2×
Brick Curved 2 x 1 with Inverted Cutout	78666	Tan	1×
Plate Round Corner 2 x 2 with 1 x 1 Cutout	79491	White	2×
Animal Body Part / Plant, Tail / Trunk / Tentacle / Tongue / Vine / Tree Branch (Long Tip)	80497	Dark Pink	2×
Treasure Chest Lid, Flat with 2 Studs	80835	White	1×
Brick Round 4 x 4 Centre Hole	87081	Tan	1×
Plate Special 2 x 2 with Groove and Center Stud (Jumper)	87580	Medium Azure	1×

Build DNA

Parts inventory insights for Mermaid Gabby's Aquarium Adventure

114 pieces puts this build -40% against the average Gabby's Dollhouse set and -82% against the average 2025 release.

LEGOGABBY'S DOLLHOUSE

Vs average Gabby's Dollhouse set

-40%-76 parts

This set114

Average set190

Average Gabby's Dollhouse set: 190 pieces across 11 other sets.

Vs average 2025 set

-82%-524 parts

This set114

Average set638

Average 2025 set: 638 pieces across 561 other sets.

Color profile

18different colors

Dominant color

Tan

Tan21x

20%

Medium Azure19x

18%

Vibrant Yellow12x

11%

Black11x

10%

Unique parts

1.9 pieces per unique type

Repeat factor

Average pieces per unique type.

Most used part

Brick Arch 1 x 3 x 3 [Gothic]

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

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Build Insights🧩55unique parts🎨18different colors📊6.3avg. parts per color🏆8×Brick Arch 1 x 3 x 3 [Gothic]

🎨 All Gabby's Dollhouse sets 📅 All sets from 2025

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