LEGO vs KNEX Review: What's The Differences?

If you're a fan of construction toys, today’s comparison is for you. We're putting two of the biggest names—LEGO and KNEX—head-to-head, with a special mention of how Lumibricks (formerly Funwhole) fits into the mix as an exciting new alternative.

Brand Background

LEGO

LEGO is the global leader in construction toys, first launching its iconic interlocking brick system in 1949. Headquartered in Denmark, LEGO is now the world’s largest toy company—having sold over 600 billion pieces worldwide.

KNEX

KNEX offers a rod-and-connector system that allows for more structural flexibility than LEGO. Founded in the USA in 1992, the brand is now owned by Basic Fun! and is sold in 25+ countries worldwide.

Products & Themes

Popular LEGO Sets

Death Star (75159)
MetalBeard’s Sea Cow (70810)
Lord of the Rings: Tower of Orthanc (10237)
Harry Potter: Diagon Alley (75978)
Pirates of Barracuda Bay (21322)
Palace Cinema (10232)

Popular KNEX Sets

15210 Beginner 40-Model Building Set
13419 Imagine 70-Model Building Set
Kid KNEX 30-Model Dino Dudes Set
Mario Kart Bike Building Set
Angry Birds Crater Crash

Target Age Groups

LEGO targets builders from toddlers to adults, with age ranges from 1+ (DUPLO) to 18+ collector sets. Their appeal spans generations.

KNEX recommends its sets for ages 5+, though their true sweet spot seems to be ages 5–15. The “Kid KNEX” range helps capture younger audiences.

Quality & Value

LEGO sets are premium-priced, but you’re paying for decades of quality assurance, resale value, and an established global brand.

KNEX is generally more affordable and less refined, but offers creative flexibility and quick builds at a lower cost.

Instructions & Creativity

LEGO offers step-by-step instructions but encourages creativity through MOCs (My Own Creations). KNEX provides minimal instructions to promote open-ended engineering play—ideal for STEM learning.

Pros & Cons

LEGO

Pros:

High build quality
Huge range of themes
Great for collectors and education
Backed by extensive brand licensing

Cons:

Premium price point
Smaller parts can be lost easily

KNEX

Pros:

Great for engineering & STEM
Flexible rods allow unique shapes
Fast and fun to build
Budget-friendly

Cons:

Some parts feel less durable
Instructions are minimal

Another LEGO Alternative: Lumibricks

Lumibricks is an emerging construction toy brand that combines classic brick building with integrated lighting kits. Our kits are designed to be built and displayed—with lights bringing each model to life.

Unlike KNEX or LEGO, every Lumibricks set includes a lighting kit as standard. That means you can build your scene and display it beautifully—day or night. It’s creative, calming, and visually rewarding.