A 12-minute long special OVA of digest version of original version of Fate/stay night was included in “3rd Season,” the final volume of Carnival Phantasm anime project.

Titled as Fate/Prototype, it is written also by Fate/Stay Night’s Nasu Kinoko when he was in high school, however it is different from the original Fate/Stay night series as Saber is depicted as male and his master is a girl.