LEGO 21355 Building Instructions - The Evolution of STEM

Ideas • 2025

Where can I find LEGO 21355 The Evolution of STEM instructions?

LEGO 21355 The Evolution of STEM is a 879-piece LEGO Ideas set released on 1 March 2025. This page provides a step-by-step building instruction video. The page also links to LEGO's official building instructions for this set.

Official LEGO building instructions

Open the official LEGO instruction page to select and download the available PDF manual books.

VIEW OFFICIAL LEGO MANUALS

Instruction videos

LEGO 21355 set details

Set number	21355
Theme	Ideas
Year	2025
Pieces	879
Age rating	18+
Model dimensions	27 cm (10.5 in.) high, 23 cm (9 in.) wide and 19 cm (7.5 in.) deep
Release date	1 March 2025
Minifigures	3
UK MSRP	£69.99
US MSRP	$79.99
EU MSRP	€79.99

Set overview

LEGO 21355 The Evolution of STEM is a 879-piece LEGO Ideas set released in 2025 with 3 minifigures.

This page includes one step-by-step instruction video for building The Evolution of STEM.

Notable features

a display stand
a brick-built animal model
included minifigure content