Wow, there are a lot of pieces and while the instructions using BILT are well designed it’s still very tedious assembly so you really have to stay focused to do it right. My 4 year old loves it so far but he has only had 1 day to play with it. He just have thanked us 100 times and has been grinning from ear-to-ear all day. It will be great for him. The wood does seem flimsy and soft but once completed it did feel strong and sturdy.