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Trinity: Zill O'll Zero (known as Trinity: Souls of Zill O'll outside of Japan), is an Action role-playing game, part of the Zill O'll series, which has previously appeared on PlayStation, PlayStation2 and PlayStation Portable, developed by KOEI, due for release in 2010 for PlayStation 3. According to KOEI, the game is currently 30% complete. The content is supposedly darker than previous entries in the series.