IGA claimed in 2006 that Circle of the Moon was considered a side project to his timeline. Elements from the game were mentioned in the English Xtreme Desktop Timeline, but the game itself was not included on the timeline. The English language timeline, distributed with preordered versions of Castlevania: Portrait of Ruin in North America by Konami of America, includes the date for Circle of the Moon though the events are not described. Circle of the Moon continues to occupy an ambiguous place in the timelines published by Konami of Japan, Konami of America, and various gaming publications.
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