The great war was an ancient war against the Xarothi, and the Light Ones, an archaic, almost godly race. The Xarothi won by only a small amount, and the Light Ones were completely destroyed.

Notably, FUNCTI0NSQUARE was mortally damaged during the war, the only time it has ever done so. However, it simply turned into electricity, was repaired by the Xarothi, and went back into the war.