Just as Arthurian legend still has great cultural power in my country, the UK - from the film "Excalibur" to "Monty Python and the Holy Grail" & Disney's "Sword in the Stone"; a Sci-fantasy comic by DC "Camelot 3000" - to even an episode of the Sci-Fi TV series "Babylon 5" - then even the far [i]earlier[/i] "Epic of Gilgamesh" still has legs to this day, and worldwide, influence-wise.
https://en.wikipedia.org/wiki/Gilgamesh_in_popular_culture
'Fate/stay night (2004), a Japanese visual novel written by Kinoko Nasu and developed by Type-Moon.'
'Fate/Zero (2006), a Light Novel authored by Gen Urobuchi, illustrated by Takashi Takeuchi and written in collaboration with Type-Moon, features Gilgamesh as one of the antagonists.'
'Gilgamesh (anime), directed by Masahiko Murata.'
'Gilgamesh is a central character in the anime series Fate/Stay Night which is based on the visual novel by Type Moon., and in its prequel, Fate/Zero.'
https://en.wikipedia.org/wiki/Epic_of_Gilgamesh
'The Epic of Gilgamesh, an epic poem from Mesopotamia, is amongst the earliest surviving works of literature'
'This first combined epic, known as the "Old Babylonian" version, dates to the 18th century BC'
The Bible...? A "Saw"/"Hostel"-esque torture porn flick by a geographically schizophrenic Australian anti-Semite, and the "Left Behind: The Movie" that's not exactly the "Harry Potter" films, nor "Avatar" in pure bums-on-seats dollars & cents, pounds & pence terms, not so much.
@Dharmabum
"Holy shit! That means all the EARLIER religious myths must be true as well!"
And therefore - on the basis of Failful(IQ)8.3's logic - "Fate/Stay Night" is a documentary.