This game simulates the clash between Takeda Shingen and Uesugi Kenshin that took place near the Kawanakajima plains on September 10th, 1561 (1561 being Eiroku 4 in the calendar system of the time). This was the 4th, and greatest (yet still inconclusive) of the battles of Kawanakajima. Many previous wargames use luck of the dice to determine the results of combat, but this game instead has players choose one of their combat cards, numbered 1-6, to resolve battles. Because of this, victory is determined not by the 'random factor' of one's luck with dice, but with 'reading and bluffing'.