The 3 Otters 3D Wood Puzzles feature two puzzles: a helicopter and a monster truck. The pieces all punch out of the board easily and the kids were able to quickly sand the edges. Instructions were easy to follow for the older kids. The younger kids needed a little help from their siblings. There was minimal adult assistance needed. The finished product looks great and my son has them displayed on his shelves. I would say this is best for ages 5-7 with supervision and 8 on up with minimal to no supervision. This would be a great birthday or holiday present for a kid 5-12. Highly recommended!