# Diplomacy **Domain:** Strategic games **Doc Type:** Developed Artifact Node **Maturity:** Developed **Collection:** [[collections/Gamification|Gamification Collection]] ## Definition **Diplomacy** is Allan B. Calhamer's strategy game, first commercially released in 1959, in which players represent European powers before the First World War. Orders resolve simultaneously; negotiation, coalition formation, promises, and betrayal replace dice as the central uncertainty. ## Significance Diplomacy isolates proactive coalitionary skill. Because alliances are unenforceable and randomization is absent, outcomes depend heavily on credibility, inference, coordination, and the timing of defection. It is a compact model of how rules can bound action without eliminating deception. ## Sources - Allan B. Calhamer, [The Invention of Diplomacy](https://diplom.org/~diparch/resources/calhamer/invention.htm) ## Routes [[wiki/Costly Signaling|Costly Signaling]] · [[wiki/Thomas Schelling|Thomas Schelling]] · [[wiki/Coalitionary Aggression|Coalitionary Aggression]] · [[wiki/Megagame|Megagame]]