From Nikita Demidov:
Cities - a game for a few (two or more) people, in which each party in turn calls the real city of any country whose name starts at the letter, which ends with the name of the previous party. In doing so, early named cities must not be used again. The first participant selects any city. During the game is forbidden to use reference materials. Formally, the game ends, when another party can not be called a new city, but because of the length and monotony of playing the game often ends with a draw.