The Avatar film series is expanding to four sequels because James Cameron just can't tell the full story in three. Cameron was a surprise guest at CinemaCon where he said three sequels would only make him "bump up against the limitations for [his] art form". "'I've been working the last couple of years with a team of four top screenwriters to design the world of Avatar going forward: the characters, the creatures, the environment, the new cultures," Cameron explained.. "So far, the art I'm seeing, is in pure imagination, really far beyond the first film. It's going to be a true epic saga. So together, we're going to continue to make this industry the greatest show on earth. That's what we do."
