With Lucas Arts and Interplay readying their Star Wars and Fallout MMO titles, respectively, could Activision's Call of Duty franchise be next in line? The company has flirted with the idea in the past, as it looks at different business models to monetize online gameplay, and if recent comments from Activision Blizzard CEO Bobby Kotick are any indication then a Call of Duty subscription based game could indeed be in the cards.

His comments were made in a recent interview with of its operating profit from non-console-based titles, which could be seen as a sign that they'll try to bring more of its properties to PC-based online models. When you consider the majority of that figure likely comes from the 11.5 million World of Warcraft players paying a $15 monthly fee, the idea of Activision spreading this model to other popular franchises sounds even more plausible.