Prism Ark ~Prism Heart 2~ (プリズム・アーク 〜プリズム・ハート エピソード2〜, Purizumu Āku ~Purizumu Hāto Episōdo2~) is a Japanese erotic video game and the sequel of Prism Heart developed by Pajamas Soft. Its first release was on August 25, 2006. This work contains adult-only content of a sexual nature. An anime entitled Prism Ark began airing on Chiba TV, on October 8, 2007.