The film is based on Blizzard's longstanding Warcraft universe, directed by Duncan Jones. Jones is the director of Moon and Source Code, and he happens to be David Bowie's son. Take that one to trivia night, folks.
Warcraft originally had Sam Raimi as director, but he bailed to take on Oz: The Great and Powerful. The project is sticking with a script by Charles Leavitt, the writer of Blood Diamond and K-PAX. Filming begins January 13, 2014.