Is Mountain Fortress a licensed LEGO® set?

It's an official LEGO® product released through the BrickLink Designer Program, which turns selected fan-submitted designs into real sets, rather than a set from a licensed franchise.

How does the piece count compare to other large sets?

At 3,997 pieces, Mountain Fortress sits among the larger BrickLink Designer Program releases, with 804 of those pieces being unique parts.

What colours should I expect in the box?

Expect mostly Light Bluish Gray and Dark Bluish Gray for the rockwork, with Reddish Brown and white used for timber and smaller accents.

BrickLink Designer Program

Mountain Fortress

Mountain Fortress is a 3,997-piece building set shaped like a medieval stronghold built into a rocky mountainside, complete with towers, hidden chambers and 9 minifigures. It comes from the BrickLink Designer Program, where fan-submitted designs are turned into official sets. This page lists every one of its 804 unique parts and colours.

Set number: 910029
Year: 2024
Pieces: 3,997
Minifigures: 9
Theme: BrickLink Designer Program
Different parts: 804

What can I build with it?

View the official building instructions at LEGO® ↗

Parts list 804

As BrickLink list (XML)

Import on BrickLink: Wanted → Upload, upload the file (or paste its content), pick a Wanted List and add the parts.

Minifigures 9

Mountain Fortress Lion Knights King fig-0152485 pieces × 1
Mountain Fortress Child fig-0152494 pieces × 1
Mountain Fortress Black Falcon Archer - Male fig-0152506 pieces × 1
Mountain Fortress Woman fig-0152514 pieces × 1
Mountain Fortress Black Falcon Archer - Female fig-0152525 pieces × 1
Mountain Fortress Black Falcon Soldier - Helmet with Pointed Visor, Armor fig-0152536 pieces × 1
Mountain Fortress Black Falcon Soldier - Helmet with Broad Brim, Shoulder Armor fig-0152545 pieces × 1
Mountain Fortress Black Falcon Soldier - Helmet with Neck Protector, Beard fig-0152555 pieces × 1
Mountain Fortress Black Falcon Woman fig-0152565 pieces × 1

Description

From fan design to official set

Mountain Fortress didn't start life on a LEGO® designer's desk – it began as a community submission to the BrickLink Designer Program, where fans design large-scale models and the public votes on which ones get made. This entry reimagines a medieval stronghold built straight into a mountain face, a setting you won't find in the mainline Castle or Icons ranges. At 3,997 pieces it's a substantial build aimed at experienced adult builders. The programme has produced several large fan-created sets since it launched, and Mountain Fortress is one of the bigger entries by piece count.

A fortress carved into rock

The build mixes sculpted rockwork with traditional fortress details: battlements, a drawbridge, watchtowers and hollowed-out chambers inside the mountain itself. Rather than a flat facade, the model reads well from several angles, which makes it a strong centrepiece for a shelf display. The greyscale rock is offset by Reddish Brown for timber beams and structural details, with white picking out smaller accents such as banners or snow.

Nine minifigures bring the fortress to life

Nine minifigures come with the set, enough to populate the battlements, courtyard and interior without turning the build into a figure-heavy playset. They suit small scene-building as much as static display, and the multiple floors and hidden spaces give you room to rearrange them as your collection grows. If you already own other castle-themed sets, these figures slot in easily alongside them.

Parts, colours and what else you can build

With 804 unique parts, Mountain Fortress is a useful source set for anyone building their own landscapes or fortresses, particularly for its rock and greyscale elements. The parts list on this page shows every element with its colour and quantity, so you can check exactly which bricks you'd need to recreate a section, match a colour scheme, or simply see how a 3,997-piece model breaks down piece by piece. That level of detail is useful whether you're topping up a specific grey or checking how rare a particular rock piece is.

FAQ

Is Mountain Fortress a licensed LEGO® set?: It's an official LEGO® product released through the BrickLink Designer Program, which turns selected fan-submitted designs into real sets, rather than a set from a licensed franchise.
How does the piece count compare to other large sets?: At 3,997 pieces, Mountain Fortress sits among the larger BrickLink Designer Program releases, with 804 of those pieces being unique parts.
What colours should I expect in the box?: Expect mostly Light Bluish Gray and Dark Bluish Gray for the rockwork, with Reddish Brown and white used for timber and smaller accents.