Before Waizz
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Before Waizz (or alternately, Before War), commonly abbreviated BW, is a designation used to number years in the Phantasy Star videogame series. It defines years before an epoch based on the year that Supreme King Waizz united the planet Palma. Years after the epoch are designated AW, which stands for both "After Waizz" and "After War." Both designations are placed before the year, such as in "BW 100" or "AW 100."