Curupayti 1866 recounts the war of the Triple Alliance that ravaged South America for 5 years, where Paraguay had to face alone the combined forces of Brazil, Argentina and Uruguay.
The Paraguayan army and fleet tried to seize and hold on to disputed territories in the early years of the war, with some success, before having to resist the assaults of its powerful neighbours during the last stages of the conflict.

Curupayti 1866 is played in 30 turns of two months each between April 1865 and March 1870. It opposes two sides :

The Republic of Paraguay, under the leadership of President Francisco Solano Lopez, who sought to seize the neighboring territories he claimed, and then to hold on to them until the end of the game..

• The Alliance of its powerful neighbors, Brazil and Argentina trying to get Lopez out of power.
  
• Uruguay is split between two factions, the white (Blancos, supporting Paraguay) and the Colored (Colorados, supporting the Allies).

The event cards will allow the game to be renewed by a set of varied diplomatic, military, political or economic fluctuations.

Average playing time: 4h00
Favored side: none
Most difficult side to play: Paraguay