"Diplomacy" is a classic board game that combines strategy, negotiation, and deception. It's set in Europe just before World War I, with players representing one of seven Great Powers: Austria-Hungary, England, France, Germany, Italy, Russia, and Turkey. The game’s objective is to control the majority of strategic cities and provinces marked on the game's map.

Unlike typical war games, there are no dice rolls or elements of chance in "Diplomacy." Success hinges on a player's ability to forge alliances, negotiate deals, and occasionally betray other players. Players submit orders for their armies and fleets simultaneously, and all moves are revealed and executed at the same time. This simultaneous action sequence requires players to strategize based on prediction and trust, often leading to intricate plots and unexpected betrayals.

The game is well-known for its intense player interactions, often involving secret discussions and agreements. Diplomacy can be played by 2 to 7 players and typically requires several hours to complete, reflecting its depth and complexity.