Gabby's Dollhouse

Mermaid Gabby's Aquarium Adventure

A tiny aquarium that punches above its piece count for the preschool crowd.

Brick Rated Score

3.7/5

Set 11204 · 2025

Pieces114

Minifigsn/a

Year2025

Set number11204

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The verdict

I handed this to a five year old in my life who has never finished a LEGO set on her own, and she got through most of it without asking for help, which tells you exactly what this set is built to do.

At 114 pieces it is not going to challenge anyone who has graduated past chunky bricks, but that is not the point. This is the on ramp, the set that gets a small kid from watching the show to actually building something from it. For that job, it does its work well.

Best for: young Gabby's Dollhouse fans building mostly on their own for the first time

The full review

What it is

This is a small aquarium-themed build out of LEGO's Gabby's Dollhouse line, the licensed theme based on the Netflix and DreamWorks preschool show. The whole line is designed around the same idea, take a beloved cartoon room or scene and rebuild it with fatter, more forgiving LEGO geometry so a four or five year old can actually build it themselves instead of just watching a parent do it. Mermaid Gabby's Aquarium Adventure follows that formula, and honestly, watching a small kid complete a set start to finish without help is its own kind of win that a lot of bigger, showier sets never deliver.

The catch

I will not pretend this is a set for anyone who has aged out of the target range. At 114 pieces there is no clever engineering here, no rare part you will want to hoard, no build sequence that makes you sit back and go, huh, clever. The value proposition is entirely about accessibility and theme accuracy, not piece count or technique. If you are buying this for yourself as a display piece or for an older kid who already builds Technic sets, you will be disappointed by how quickly it is over and how simple every connection is.

Who it's for

Get this for the specific kid in your life who is currently obsessed with Gabby's Dollhouse and wants to hold the aquarium scene in their own hands. Skip it if you or your builder are looking for a real construction challenge, or if the character in question has moved on to the next show already, because outside of the license this has very little pull on its own.

The parts story

What the build is actually like, and the pieces worth knowing about.

Building this feels intentionally light. The steps are short, the connections are big and obvious, and there is very little hunting for the right piece, which is exactly right for a preschool audience. There is no tension in the build the way there is with a licensed set aimed at adults, it is paced for a small kid to feel steady progress every few pieces rather than working toward one big payoff moment.

The value here is in the theming rather than rare elements. You get the bright aquatic color blocking, the oversized dollhouse-style bricks the whole sub-theme is known for, and small scale accessory pieces that dress up the aquarium scene so it actually looks like the room from the show once it is finished. Do not go in expecting a new mold or a printed rarity, this set spends its budget on recognizable shapes and color, not on part novelty.

Fun facts

01This set belongs to LEGO's Gabby's Dollhouse theme, built around the Netflix and DreamWorks Animation preschool show of the same name.
02The Gabby's Dollhouse LEGO line is one of the brand's youngest-skewing licensed themes, using deliberately simplified, chunkier building techniques aimed at first time builders around age four and up.
03The aquarium and mermaid framing ties to MerCat, the mermaid cat character from the show, giving the set its underwater color scheme rather than the usual dollhouse room palette.