Project Zero
A sequel to the game, titled ', was released in 2003 in North America and Japan, and 2004 in Europe. A sequel to both games, ', was released in 2005 in Japan and North America, and 2006 in Europe. "Crimson Butterfly" takes place parallel to "Fatal Frame / Project Zero", while "The Tormented" takes place two years later. Since the original game's release, the gameplay has remained generally unchanged, becoming a defining part of the series' identity.