Fun but you must not play too hard!

The ball track brings our child a lot of humor and inspired him to build on increasingly difficult constructions. The ball rolls in good wood. To play you absolutely need a flat surface or solid flooring. Soft carpet is not suitable, since the blocks fall down quickly and the whole rail breaks. But for large tracks you need more space than a table here are.
However, it is not a game for times in between. The kids need just enough patience and dexterity with the blocks correctly to put one above the other, so that the ball always comes through hole to the next stone. The age 3, I would therefore advise the earliest.

But: The blocks wear out quickly, does not break the wood, but the splice, where the elements are joined together. We are already several fallen apart, I have now repaired with superglue.