We have the pen for a period, a lot of books, the farm, many animals and the construction Puzzle and now even the fire brigade! And it's great! My boys are on puzzles. And here also a game. The construction puzzle was super, this is at least as good. With two pins the guys can also play at the same time, what gives me a few relaxing minutes.
I would highly recommend the entire series, and the puzzle "in use" than ever!