A Dark Souls movie would almost certainly be terrible, which is why I'm glad a Dark Souls movie will never get made.
This, however, is pretty awesome. It's an attempt at using the Dark Souls game to tell the Dark Souls story in the most cinematic way possible. It's pretty cool.
What I like most about it is the cinematography. There are some genuinely beautiful shots in this 'movie'
And it really takes advantage of what a unique space the Dark Souls world is, in terms of its art design.
Well worth a watch, especially if you're well versed in the lore of the game.