Build
16 high-performance LEGO (R) projects

Following on from Lego's incredibly successful Crazy Action
Contraptions (9781591747697), children can make more amazing
moving machines in Lego Chain Reactions!


We've included more than 100 LEGO (R)
elements with this construction kit. Not coincidentally,
they're exactly the bunch of bricks you need to make all 16 Crazy
Action Contraptions (but not all at the same time).


We selected these elements for their mechanicals
flexibility, utility, and general awesomeness and then
got the work building the best LEGO (R) vehicles, launchers,
noise-makers, gadgets, and games around.





Parents' choice award winner


Includes every brick, gear & Axle
you need to create 16 unique projects

Comes with 105 LEGO Bricks


Includes a 50 page instructional book
with Klutz Certified crystal-clear instructions

1.5+ million copies sold


Recommended for children ages 7+




What is Klutz?
Klutz is
a premium brand of book-based activity kits, designed to inspire
creativity in every child. Our unique combination of crystal-clear
instructions, custom tools and materials, and hearty helpings
of humor is 100% guaranteed to kick-start creativity.








Super-clear
instructions

Open-ended
Creativity

Rewarding
Reading

Skills
to Build On

Everything
You Need