600 pc Open Play Mix

The 3-D builds are what sold me—my son made a little car and a tower within the first hour. That one simple piece really does snap together in any direction, and the open pack means we can just dump them out and go.

My kids have spent hours with this set, and I'm amazed at how one simple shape keeps them engaged. The 600 pieces give plenty to build with, and they've made everything from flat mosaics to 3-D towers. Even the 9-year-old keeps coming back to it.

I was skeptical that one simple shape could keep my kids entertained for long, but these 600 pieces have been a lifesaver on rainy afternoons. The mix of 2-D mosaics and 3-D structures means even my 4-year-old can join in, and the pieces snap together firmly enough to survive being knocked over.