This is so much fun we now have 48 of these and definitely need a lot more. I buy another 48 pieces for Christmas, but that's still not enough. Now at 48 we have enough to build a tower or a wall if there are gaps between the walls, but be careful because if the wall falls it could hurt someone. The wall was about 39 inches high. The blocks actually hold together well and if you shake them they don't fall apart. They are really easy to take apart so my little one can build by herself. I think you need at least 96 to build anything good
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