DISCover-Earth offers a playful way to brush up your geography skills. You are the navigation officer of a space ship, and your job is to visit as many places on earth as possible. Be aware though: you only have limited fuel.
This very simple game is a fun addition to your mobile phone, and won't take up much memory. As you float around, you must try to increase you fuel by flying into the battery symbols, or your spaceship will crash!