Sony Pictures is working on a deal with Ubisoft to secure the film rights to Assassin's Creedd; however, Vulture reports that the deal Ubisoft got is so heavily Ubisoft-leaning that it may make the film impossible to actually finish.

The deal grants Ubisoft approval over most aspects of the film, including budget, cast, script, and even release date. "As a director, even Steven Spielberg cannot get this kind of deal," Vulture was told by an "insider" who didn't really need to stay anonymous for that.

With Ubisoft in charge, and retaining the right to stop production at any time, there seems to be a concern among the interviewed studio heads that Ubisoft would do just that if it didn't like what it was seeing -- or that it would continue to make demands too demanding for any movie studio to deal with.

This article was originally published on Joystiq.