 A PlayStation Portable (PSP) version of the game was released in Japan on May 29, 2008 by Prototype, which included the additions from the Windows full voice version.The limited edition release of the PSP and Xbox 360 versions came bundled with a "digest" edition of the drama CD series released by Prototype containing five separate stories each; the CD bundled with the PSP release is different from the CD bundled with the Xbox 360 version.Prototype also released a port of the game for the PlayStation Vita on August 14, 2014 to mark the 10-year anniversary of the game.