I have two daughters. Now they are adults, but when they were young I used to play with them all kinds of games. They loved puzzles and they always asked for more puzzles and for more difficult ones. As the difference of ages was a little more than one year, they could play together or alone. One of the "puzzles" they loved was "geography". I had a terrestrial globe very colorful and they loved to discover where each country was. As they grew and learned to read, this game developed to know the capitals or a few geographic marks. It was very fun and both loved it. I miss that time...