BOOMTOWN BUILD Discovery Set (45812-1) is a FIRST LEGO League LEGO set released in 2019 with 78 pieces. Browse the parts list, minifigures, and verify loose bricks with our free scanner. Collectors browsing FIRST LEGO League sets use this inventory to verify loose parts, compare color variants, and read official build manuals without downloading PDFs. This set includes 22 unique part types.
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Buying checklist
Quick context before you buy this set used or verify a marketplace listing.
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Release year
2019 (7 years ago — may be retired)
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Catalog scale
78 parts listed · 22 inventory lines tracked
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Minifigures
No minifigs in inventory (brick-only or Technic set)
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Build manual
No digital manual in our catalog — check the box tab or LEGO.com
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Shipping weight (est.)
~264 g for parts inventory (excludes box/minifig packaging)
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Before you buy used
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Market value
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Parts in this set
22 parts · updating…
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Duplo Brick 1 x 2 x 2 Brick Effect25550 · ×8 · Medium Azure -
Duplo Brick 2 x 23437 · ×4 · Dark Bluish Gray -
Duplo Brick 2 x 2 Slope 45°6474 · ×4 · Light Bluish Gray -
Duplo Brick 2 x 2 Slope 45°6474 · ×6 · Medium Azure -
Duplo Brick 2 x 43011 · ×5 · Blue -
Duplo Brick 2 x 43011 · ×5 · Yellow -
Duplo Brick 2 x 43011 · ×5 · Green -
Duplo Brick 2 x 43011 · ×5 · Orange -
Duplo Brick 2 x 43011 · ×5 · Red -
Duplo Brick 2 x 43011 · ×5 · Medium Blue -
Duplo Brick 2 x 4 Curved Top98223 · ×4 · Reddish Brown -
Duplo Fence Railing 1 x 6, with 6 Posts12602 · ×2 · Yellow -
Duplo Figure Child with Cap Lime, with Light Bluish Gray Sweater and Tie over White Shirt - Dark Brown Face - Blue Legs47511wpr0006 · ×1 · Light Bluish Gray -
Duplo Figure Child with Ponytails and Bangs Black, Red Top with Rocket Ship Print - Nougat Face and Hands - Dark Azure Legs18825pr0032 · ×1 · Red -
Duplo Figure Child with Ponytails and Bangs Yellow, with Dark Azure Legs, White and Pink Top with Bee Print18825pr0024 · ×1 · Bright Pink -
Duplo Figure Child, Hair Combed Forward with Curl Black, Red Top with Rocket Ship Print - Nougat Face and Hands - Dark Azure Legs18823pr0010 · ×1 · Red -
Duplo Flag Wavy 3 x 4 with Post31925 · ×2 · Bright Light Orange -
Duplo Plate 2 x 5 with 8 Studs and Hinge16686 · ×4 · Bright Green -
Duplo Plate 2 x 698233 · ×2 · White -
Duplo Plate 4 x 84672 · ×2 · Blue -
Duplo Plate Special 4 x 6 with Studs on Edge31465 · ×2 · Yellow -
Duplo Train Crossing Gate Base / Crane Base with Bottom Hole13358 · ×4 · Black