Call of Duty has a new full-fledged developer. Sledgehammer Games is now part of a trinity of game developers that will be creating an annual Call of Duty title, freeing up more time each game maker has to create its respective sequel. Right now, Infinity Ward has the Ghosts series set in the near future; Treyarch could conceivably continue the Black Ops series (which is also set in the near future). With the CoD series spanning wars from World War II to the future, we have to ask, "What setting will Sledgehammer take for its new game?"

As far as wars involving guns go, Call of Duty has most of the major ones covered. It's hard to imagine what new trail in modern-ish warfare Sledgehammer could blaze. But I've come up with a list of possible settings Call of Duty could tackle, and all of them have the potential to be awesome. Where should Call of Duty go next? Read on.