1. Sets
  2. Education
  3. FIRST LEGO League Challenge
45831 Education FIRST LEGO League Challenge 2025 - Unearthed Discover Set thumbnail image

45831 Education FIRST LEGO League Challenge 2025 - Unearthed Discover Set
Images 2Description 
45831 Education FIRST LEGO League Challenge 2025 - Unearthed Discover Set
  • FIRST LEGO League Challenge 2025 - Unearthed Discover Set thumbnail
  • FIRST LEGO League Challenge 2025 - Unearthed Discover Set thumbnail

LEGO 45831 FIRST LEGO League Challenge 2025 - Unearthed Discover Set is a Education set currently valued at $43 for new and sealed sets. Annual appreciation has averaged 25.08% since release. On the used market, values range from $33 to $60 based on condition.

Set Value (New/Sealed)

This chart represents the current new/sealed value of the set FIRST LEGO League Challenge 2025 - Unearthed Discover Set since August 2025. Medium accuracy
LEGO 45831-1 FIRST LEGO League Challenge 2025 - Unearthed Discover Set is an Education FIRST LEGO League Challenge set released in 2025, containing 32 pieces. It supports the FIRST LEGO League 2025–2026 UNEARTHED season and serves as an introductory construction kit for younger participants in the Discover division. The set is aligned with play-based STEM exploration through LEGO Education activities. The UNEARTHED theme frames tasks around digging, exploring, and uncovering as a metaphor for investigation and archaeology-themed learning. Based on current trends, this set could be valued near $46 within the next year.
FIRST LEGO League Challenge 2025 - Unearthed Discover Set is a relatively rare set. We have not seen set 45831-1 for sale in primary or secondary markets for over 6 months. Its market value is likely somewhat higher than our estimate. The last brand new FIRST LEGO League Challenge 2025 - Unearthed Discover Set was sold on eBay.

For Sale (New/Sealed)

 (US) New sealed 45831 FIRST LEGO League Challenge 2025 - Unearthed Discover Set
BrickEconomy Choice
$44.78
45831 FIRST LEGO League Challenge 2025 - Unearthed Discover Set ~$43.91

FIRST LEGO League Challenge 2025 Sets

45829 FIRST LEGO League Challenge 2025 - Unearthed

Theme / Subtheme Education / FIRST LEGO League Challenge
Year 2025
Pieces 1,743
Availability Retired
45829 Education FIRST LEGO League Challenge 2025 - Unearthed
Retail $95.00
Value $479.00
Growth  +404.2%
Annual growth 31.9%

45830 FIRST LEGO League Challenge 2025 - Unearthed Explore Set

Theme / Subtheme Education / FIRST LEGO League Challenge
Year 2025
Pieces 698
Availability Retired
45830 Education FIRST LEGO League Challenge 2025 - Unearthed Explore Set
Retail $150.00
Value $209.06
Growth  +39.4%
Annual growth 15.3%

Sets in Education / FIRST LEGO League Challenge

45823 MASTERPIECE Challenge Set

Theme / Subtheme Education / FIRST LEGO League Challenge
Year 2023
Pieces / Minifigs 1,756 / 5
Availability Retired
45823 Education FIRST LEGO League Challenge MASTERPIECE Challenge Set
Retail $250.00
Value $404.66
Growth  +61.9%
Annual growth 14.1%

My Collection

FIRST LEGO League Challenge 2025 - Unearthed Discover Set Reviews

18 ratings
4.7
Collectors
Investors

About Education FIRST LEGO League Challenge

The "MASTERPIECE Challenge Sets" are part of the LEGO Education FIRST LEGO League (FLL) Challenge. These sets are used in the FIRST LEGO League Challenge, where teams of students aged 9-16 build and program LEGO robots to complete missions on a themed playing field. The MASTERPIECE theme encourages participants to explore and solve problems related to creativity and the arts. The set includes a variety of LEGO elements to construct mission models that teams' robots must interact with, promoting STEM learning, critical thinking, and teamwork skills.

FIRST LEGO League Challenge currently consists of 4 sets that as of now has run from 2023 to 2025. As of today, 45829 FIRST LEGO League Challenge 2025 - Unearthed is the most valuable FIRST LEGO League Challenge set with an estimated new/factory sealed value of $479.
Summary
Education FIRST LEGO League Challenge FIRST LEGO League Challenge 2025 - Unearthed Discover Set set 45831 was released in August 2025, retailing for $35, but has since been retired. New, unopened FIRST LEGO League Challenge 2025 - Unearthed Discover Set sets are valued at $43, while used sets can be found for $36.
Read more
Grab your gear, pack your magnifying glass, rope, and pickaxe - the adventure begins! In this season of FIRST LEGO League UNEARTHED, you and your team will follow the traces of the past: uncover hidden treasures, mysterious artifacts, and forgotten stories. But your mission doesn't end with the discovery, that's just the beginning!

What lies behind the ancient symbol carved in stone? What tools help archaeologists in their exciting work? And how can your ideas shape the future?

The comic gives you a first glimpse into your journey: from hiking into the field and searching for clues to deciphering the past: your curiosity and team spirit are key!

Get ready: dig, explore, discover - and uncover the world of UNEARTHED together with your team!
Description provided by LEGO©