I received two copies of this set. It has a good selection of special parts useful for building animals or articulated vehicles such as excavators. Some parts are useful for creating custom planes, spaceships, and planes. My 3 year old was able to assemble most of the models with the instructions, down to the smallest details. I believe the suggested age range is suitable for DIY. The dragon's head and legs are a bit more complicated, but the body and tail were easy enough for him to assemble himself after reading the instructions. The set contains many of the same parts as the 3-in-1 dinosaur, which is useful for replacing some colors. I had two copies of each so I could make a stegasaurus and an elephant. From one set you can make a tail of 3 sections. With two you can make one with 6 sections and build a cobra. Dinosaur 3 in 1 has additional online models for 5 different dinosaurs and an airplane. It would be nice if Lego made additional models for this set but overall it's great value for money. I hope Lego makes more of these and maybe a spaceship and castle 3 in one.
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