I first bought this as a gift for my 2-year old nephew, and he immediately began making towers as tall as himself. I've since given it as a gift to a few other people whose children have always loved it. Most recently I bought Mega Bloks for my 9 month-old little boy who waits patiently whilst I build simple structures and then knocks them down with squeals of delight! Easy for little hands to get to grips with, great for early understanding of structure, helps with colour recognition and numeracy, endlessly adaptable for use with all sorts of games, and easy to clean- what more could you want?!