Peace War Game is an iterated game-theory model used to study strategies of
cooperation and aggression between rational actors. Each player acts as a defense
contractor operating against a shared, dynamically evolving world state grounded
in published conflict and peace-index research.
Outcomes emerge from
collective player behavior: unilateral aggression accelerates the world toward doomsday, while cooperation requires unanimous, costly coordination.
Countries post weapons demand within the simulation. Players acquire inventory and allocate it across buyers, and each transaction updates a shared set of world-state variables tracking regional tension, instability, and civilian impact. A market at war pays double what a stable neighbor pays, and every transaction leaves a persistent mark on the modeled world.
Left unchecked, these dynamics compound: the shared instability index reaches its threshold and the session terminates for every player simultaneously, with final standings calculated from capital accumulated, volume of weapons sold, and the civilian cost attributable to each player's transactions. Alternatively, the players can pursue World Peace, an ending that requires unanimous cooperation. A single dissenting player is sufficient to prevent it, illustrating the coordination problem at the center of the simulation.
Selecting Realistic mode initializes the simulation from empirical inputs rather than arbitrary values. Each country's starting tension and arms-procurement capacity are derived from two published datasets, snapshotted from their most recent available editions, with additional real-time conflict-monitoring data planned for future updates.
Everything runs on timers, so decisions get made under pressure or not at all. Negotiate, buy, sell, then watch the world react, on a loop.
There are exactly two endings, both computed live from the shared world state. One happens to you. The other, everyone has to choose.
This is a real game theory exercise, played for decades under the name peace war game: reward war today, and let its true cost show up quietly, later, for everyone. Twenty rounds in, that delay is the whole point.
Peace War Game is a free standalone download. Host a game or fill it with AI, then decide how it ends. Or try the solo version right in your browser.