I would rate it a three, but because the kids like it I'll give it a four. The problem is how to build it. It doesn't have instructions but it's pretty easy to just make your own race BUT it's pretty flimsy and I was frustrated helping my kids assemble it. Also, you have to be patient because it can be very difficult to figure out how to make all the bridges and curves work correctly so that the balls have different trajectories! This gives you more room to work, but it also helps balance the set because as we said, this thing can be very weak. Fell down several times while assembling.
Advanced Structures For Babies & Toddlers Ages 10 Months And Up - WEofferwhatYOUwant Super Ball Drop With Double Bridge & Spacers!
37 Review
129 PCS Marble Race Track Game - Gifts2U STEM Educational Marble Maze Building Blocks Toys For Kids 4+ Year Old
10 Review
168Pcs Gifts2U STEM Learning Educational Construction Marble Run Toy Set - Includes 136 Translucent Plastic Pieces And 32 Glass Marbles - Fun Parent-Child Game And Building Block Toy
19 Review
Educational Ball Drop Activity Playset - Advanced Spiral Swirl Ramp Bridge For Toddlers
26 Review
CPSYUB Montessori Matching Eggs: Educational Learning Toys For 1-3 Year Old Boys And Girls With Color & Shape Recognition Skills; BPA-Free Easter Eggs Gifts (Set Of 12 Toddler Toys)
33 Review
Baby Einstein Octopus Orchestra Musical Toy, Ages 6 Months +
41 Review
School Bus Busy Board Activity Set For Early Learning And Fine Motor Development - 12 Basic Skills To Learn To Dress And Play, Ideal Sensory Toy For Preschool Kids, Kindergarten And Travel
31 Review
PicassoTiles 3-In-1 Building Block Set: Rocket, Bus, Train Theme For STEM Learning And Early Education - Magnetic, Pretend Play Toy For Kids
32 Review