Can this set be built without taking part in a competition?

Yes, every mission model can be assembled purely for fun or practice. You'll only need extra mat material and a programmable robot to run actual FLL missions.

Does the set include a robot or competition mat?

No, 45826 only contains the mission models and three minifigures. The mat, rulebook and robotics hardware are obtained separately through FIRST LEGO League.

What age group is this set aimed at?

FIRST LEGO League is designed for school-age and youth teams, usually guided by a coach. The many small, mechanically detailed models suit builders with some prior experience.

FIRST LEGO League

SUBMERGED Challenge Set

Set 45826 is the official 2024 mission-model kit for the FIRST LEGO League "SUBMERGED" season, an ocean-themed robotics competition for school and youth teams. With 1,916 pieces and 3 minifigures, it supplies the small builds that robots must locate, lift or move on the competition table. It's a working tool rather than a display piece, and coaches often check this parts list before a season starts.

Set number: 45826
Year: 2024
Pieces: 1,916
Minifigures: 3
Theme: FIRST LEGO League
Different parts: 377

What can I build with it?

View the official building instructions at LEGO® ↗

Parts list 377

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 3

Skeleton, Standard Face, Bent Arms, Vertical Hand Clips, 78132 Torso fig-0169467 pieces × 1
Diver, Black Suit fig-0169476 pieces × 1
Figurehead, Black Top, Sand Green Mermaid Tail fig-0169484 pieces × 1

Description

Built for robots, not shelves

Unlike most sets in our catalogue, 45826 isn't meant to sit finished on a shelf. It contains the mission models used in FIRST LEGO League matches: compact builds that a team's own programmed robot has to detect, push, lift or transport across a game table within a time limit. The 1,916 pieces are spread across many separate small models rather than one large build, and teams typically divide the work between members, building several missions in parallel rather than one long sequential build. Checking the parts list here against the box before the season begins confirms every colour and special element is present.

Engineering over decoration

With 377 unique elements, this set is technically denser than a typical display model of similar size, because several mission builds need hinges, gears or moving joints so a robot attachment can trigger them correctly. That focus on function sets it apart from purely decorative dioramas, where appearance matters more than mechanism. The colour mix of black, light bluish grey, blue and dark bluish grey reflects the ocean setting: dark tones for rock, wreckage and equipment, blue for water elements. The three minifigures usually represent divers or researchers, adding a human touch to an otherwise mechanical, engineering-focused build.

How FIRST LEGO League works

FIRST LEGO League is an international robotics programme in which young people design, build and program LEGO robots to complete missions on a shared table. Every season introduces a new real-world theme, and SUBMERGED focuses on oceans, underwater exploration and marine conservation, which shows in the shapes and functions of the mission models themselves. The Challenge Set supplies the official mission models, while a separate robot kit such as SPIKE Prime is required to actually drive and trigger them. Use the parts list on this page to check colours and piece types before assembling the season's models as a team.

FAQ

Can this set be built without taking part in a competition?: Yes, every mission model can be assembled purely for fun or practice. You'll only need extra mat material and a programmable robot to run actual FLL missions.
Does the set include a robot or competition mat?: No, 45826 only contains the mission models and three minifigures. The mat, rulebook and robotics hardware are obtained separately through FIRST LEGO League.
What age group is this set aimed at?: FIRST LEGO League is designed for school-age and youth teams, usually guided by a coach. The many small, mechanically detailed models suit builders with some prior experience.