My 8 year old daughter loves these puzzles. She says that they are a little difficult to put together but not too hard to make her give up. Some pieces are hard to get in place and take a little extra time and patience. Building them is fun though and they come with instructions in the form of a diagram (picture). It took her about 30 mins to build one. She’s a tinker and really loves legos and building things so this was right up her alley.