Short answers, pulled from the story.
Silent Hill: Book of Memories was released in North America on the 16th of October 2012. The game subsequently launched in Europe on the 2nd of November 2012, in Australia on the 8th of November 2012, and in Japan on the 14th of February 2013.
WayForward developed Silent Hill: Book of Memories with development beginning in summer 2010. Tomm Hulett served as producer and Adam Tierney directed the project while Konami published the title.
Silent Hill: Book of Memories features five distinct endings based on character alignment plus a sixth joke ending. The endings include Pure Blood, Blood, neutral, Light, Pure Light, and a spring break scenario featuring characters from previous installments.
Daniel Licht composed the soundtrack for Silent Hill: Book of Memories after previously working on Silent Hill: Downpour. Rob King and Troy Baker also contributed to the soundtrack with the song Love Psalm featuring vocals by Mary Elizabeth McGlynn and Akira Yamaoka.
Silent Hill: Book of Memories ranked as the fourth-best-selling PlayStation Vita game for July 2013. It sold behind Mortal Kombat, Lego Batman 2: DC Super Heroes, and Hotline Miami during that period.