Hollywood has been trying to create viable action-fantasy franchises but only a few such as the hobbit and lord of the rings have been successful. Dark souls is another action fantasy game that could eventually find itself in the cross-hairs of studios if a certain film does well next year. Dark souls could already be on the list of potential videogame adaptations but there isn't any confirmation as of yet.
Here's the basic plot:
The opening cutscene begins in primeval times, where the world was unformed and the immortal Everlasting Dragons held sole dominion over all. The First Flame was ignited from an unknown source, which brought disparity in the form of light and dark. Within the flame, four beings discovered the Lord Souls and became godlike entities: Nito, the First of the Dead; the Witch of Izalith; Gwyn, the Lord of Sunlight; and the Furtive Pygmy.
Gwyn, Nito, the Witch of Izalith, and the dragon Seath the Scaleless, defeated the race of dragons in a great war and began their Age of Fire. The first flame of the world cannot last forever, and is doomed to wither and die. Realizing this, the Witch of Izalith and her daughters unsuccessfully attempted to recreate it, which turned her into a monstrosity known as the Bed of Chaos and birthed creatures known as Demons. In a last-ditch effort, Gwyn ventured to the Kiln of the First Flame with half of his faithful knights and sacrificed himself to the fire and rekindled it temporarily.
If World of War Craft proves to be a successful videogame adaptation then it only increases the chances of Dark Souls joining it on the big screen. There will be a number of videogames making the jump to film in the next few years and the market for them could keep growing since their are tons of video games to choose from and many popular titles to adapt. It's best to take all of this with a grain of salt because things could change.