

⚙️ Build the future, one chain reaction at a time!
Lego Chain Reactions is a STEM-focused building set featuring 33 multicolor Lego pieces designed to create moving machines and unique chain reactions. Ideal for ages 8-12, it encourages hands-on learning without batteries or complex assembly, and it integrates smoothly with other Lego sets to expand creative potential.






| ASIN | 0545703301 |
| Assembly Required | No |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #301 in Toy Building Sets |
| Color | Multicolor |
| Customer Reviews | 4.4 4.4 out of 5 stars (22,920) |
| Date First Available | 30 May 2014 |
| Educational Objective(s) | STEM |
| Item model number | 9780545703307 |
| Language | English |
| Manufacturer recommended age | 8 - 12 years |
| Material Type(s) | Plastic |
| Number of Game Players | 1 |
| Number of Puzzle Pieces | 1 |
| Product Dimensions | 25.49 x 4.45 x 25.67 cm; 453.59 g |
| Release date | 1 January 2015 |
| Remote Control Included? | No |
| tech_spec_battery_description_toys | No batteries required |
V**N
It will keep your child busy for hours
My 5 year old loves creating chain reactions. This was a wonderful Christmas gift. Even though an adult supervision is required, you must allow the kids to read the book and create their own chain reactions. I was surprised to see my 5 year old go step by step and build the machines. Of course, you need extra Lego's This is just an addition.
D**S
Good
Very few pieces. But this works with most other Lego pieces and good work for the brain to try create, record different types of reactions.
A**A
Promotes creativity and learning
Easy to follow instructions and a variety of moving machines to work through. Would suit 9-11 years.
S**O
true product
kids love
M**7
Good
Good
M**N
White bricks were not included in the box.
Today I got lego chain reaction toy and it has Few pieces in the box. Unlike the pictures they are showing here it doesn’t have white bricks. My son ended up with making only small structures.
R**A
Imagination is the limit
Original product at good price.
B**I
Very bad!!!!
Box came broken as it is a second hand!!!!!
D**R
This was sent to my Grandson as a Xmas gift. He likes building and planning his project at a young age. He enjoyed the challenge of putting this together. It’s an interesting gift for boy or girl who like an engineering type of puzzle.
M**K
Nice to add to the growing Lego collection. The balls are useful to make other contraptions too
M**D
Not much bricks.
C**T
Purchased for my 10 year old Lego obsessed nephew - he loved it! Gave him a new challenge rather than always building kits.
C**O
al mio bimbo è piaciuto moltissimo!! Anche se è solo in inglese è molto intuitivo e riesce a costruire tutto da solo
Trustpilot
3 days ago
1 month ago