FIRST LEGO League Challenge 2026

Notable parts

• 1 part comes in a colour no other set has for that mould: Animal, Bird, Small [PLAIN] (Bright Light Yellow).
• 39 parts appear in only a few other sets: Technic Panel Curved 11 x 3 with 10 Pin Holes through Panel Surface (Reddish Brown) ×8 — also in 45834 FIRST LEGO League Future Edition Key Stage 2-3 (KS2-3): Ages 7-14 (Years 3-9) (all FIRST LEGO League); Technic Beam 1 x 7 Thick (Dark Orange) ×5 — also in 42221 NASA Artemis Space Launch System Rocket; Crown / Flower / Egg Shell Half (Sand Green) ×2 — also in 11509 Flowering Cactus; Plate 1 x 5 (Bright Green) ×2 — also in 42241 Bugatti Chiron Pur Sport; Technic Beam 1 x 3 Thick (Nougat) ×2 — also in 75420 Luke's Landspeeder; Technic Beam 1 x 9 Thick (Bright Green) ×2 — also in 42224 Porsche 911 GT3 R REXY AO Racing; Animal, Frog (Bright Light Yellow) — also in 31220 Claude Monet - Bridge over a Pond of Water Lilies; Brick Wedged, Curved Triple 4 x 4 x 2/3 with 2 Studs with BIOGLOW Logo print (White) — also in 45834 FIRST LEGO League Future Edition Key Stage 2-3 (KS2-3): Ages 7-14 (Years 3-9) (all FIRST LEGO League); Cone 2 x 2 x 2 Inverted (Reddish Brown) — also in 43301 Toy Story Slinky Dog Bookends; Crown / Flower / Egg Shell Half (Dark Green) — also in 10342 Pretty Pink Flower Bouquet; Insect, Butterfly (Light Aqua) — also in 31220 Claude Monet - Bridge over a Pond of Water Lilies; Plant, Leaf 2 x 6 x 1 with 2 Studs (Yellow) — also in 11502 Sunflower Bouquet; and 27 more.
• 1 mould first came out in 2026, including in this set: Plant, Round 1 x 3 - 1 Leaf ×2.
• 18 existing moulds first came out in their colour in 2026, including in this set: Technic Beam 1 x 9 Bent (7 - 3) Thick (Reddish Brown) ×13; Technic Panel Curved 11 x 3 with 10 Pin Holes through Panel Surface (Reddish Brown) ×8; Brick Curved 3 x 1 x 2/3 (White) ×6; Technic Beam 1 x 3 Thick (Bright Green) ×5; Technic Beam 1 x 7 Thick (Dark Orange) ×5; and 13 more.

Calculated from Rebrickable’s public set inventories, excluding sticker sheets and spare parts.