Warcraft movie director Duncan Jones has defended the use of CGI in his forthcoming film.

"I hear this 'CGI in film sucks,' mantra again & again," he said on his Twitter page, before going on to say that he thinks of CGI as a "tool" that can have both good and bad results, depending on how it's used.

"It can be done well & it can be done sh**. The best CGI has you forgetting its CGI, and accepting the visual as whatever it is supposed to be. Like props. No one has an issue with 'props' in film, do they?"

Many Warcraft fans are concerned that the film will rely too heavily on CGI. Though star Travis Fimmel, who plays Sir Anduin Lothar, told IGN that he was skeptical initially but that the visual effects were "brilliant" and "amazing" once he'd seen the finished scenes.

Of course, the film will also be using some props, such as the props we saw at Blizzcon 2014.

Paula Patton, Dominic Cooper, and Ben Foster star alongside Fimmel in the film based on the World of Warcraft franchise, which is scheduled for a March 11, 2016 release. Warcraft movie licensed toys are already on the way, of course.

Katie Williams is a freelance writer and journalist. She tweets at @desensitisation and hopes that one day, a bird will tweet back.