Fate/Apocrypha is a series of Light Novels based on a new Holy Grail War (seperate to the five Fukuyu wars), written with the help of several other authors and artists and with various details and character designs collected in Fate/complete material IV Extra material. It was originally conceived as a joint-project MMORPG by Type-Moon (now cancelled).
The first act was published in the Type-Moon Ace magazine. Written by Yuichiro Higashide, Act 1: Unbirth for the magazine revolves around the magus Hyouma Sagara, attempting to summon Jack the Ripper as a Servant.