Its creators claim that it is the future of film-making, leading the way to a brave new world of stereoscopic cinema. And yet, as the hype continues to build around the James Cameron's upcoming Avatar, one lone voice has dared to break from the script. On the contrary, it says, Avatar is "literally vomit inducing".

Hollywood gossip site gawker.com has published an anonymous early review from what it claims is "a real live entertainment worker", comprehensively panning the film's storyline and visual techniques. It seems safe to assume that none of the review will be quoted on the movie poster.

Budgeted at a reported $237m (£143m), Avatar is Cameron's first dramatic feature since the record-breaking Titanic, back in 1997. The film is a science-fiction fantasy set on a verdant planet called Pandora and following the adventures of a US Marine played by Sam Worthington. Cameron shot the film on his own patented "fusion digital 3D camera system" and experts argue that the results take 3D techniques to a whole new level. It is set for worldwide release on 17 December 2009.

The reviewer, however, begs to differ, describing the film as "alienating"

and "weird". Moreover, he/she argues that its pioneering visual technology

is liable to induce nausea in the viewer. "The problem is with cutting in

between 3D focus points and perspective," the mystery critic writes. "The

mind cannot adjust to it without a buffer – thus, Avatar is literally vomit

inducing."

Even the review's praise comes with a sting in the tail. "There are some

beautiful moments [in the film]," it concedes. "But overall it's a horrible

piece of shit."