The only thing that my grandkids and I didn't like was that these were already assembled. They wanted to assemble them. Otherwise, they really love these! I've noticed that these are very well assembled, they are strong, and have lots of extra parts to play with. Others have said that these fall apart too easily, but I don't think that's the case. I asked my 9-year-old to see if they break easily, and she had to bend it almost in half before it came apart! Thankfully, it snapped back together easily! Highly recommend these.