Diplomacy

Diplomacy is a strategic board game created by Allan B. Calhamer in 1954 and released commercially in the United States in 1959.

Play-by-mail Diplomacy was very popular in fandom in the 70s and into the 80s.

Its main distinctions from most board war games are its negotiation phases and the absence of dice and other game elements that produce random effects.

Set in Europe, Diplomacy is played by two to seven players, each controlling the armed forces of a major European power. Each player aims to move his or her few starting units and defeat those of others to win possession of a majority of strategic cities and provinces marked as "supply centers" on the map.

Following each round of player negotiations, each player can issue attack orders and take control of a neighboring province.