At Geosense.net you can try your knowledge of geographical position of cities in the world. This is the game I used to play with friends while I was a kid. We played only the capital cities, though. At Geosense, you can try your knowledge on the world map, US, Europe. There is advanced map, where the names of the cities are not displayed immediately but the letters in the name occur as the time goes on. The game is a great way to increase and practise your knowledge of geography! You can play alone or against other players.