Ubisoft's long-running Tom Clancy series of games tend to be gritty and realistic shooters that place a big emphasis on immersion, which, as a result, makes them an absolute blast to experience with a friend. While a lot of the Tom Clancy games were designed with co-op compatibility in mind, even some of the traditional single-player titles, such as Splinter Cell, have also gradually incorporated multiplayer elements into their games. As a result, it's fair to say that, when it comes to jumping into a brand-new co-op experience, the Tom Clancy series has a plethora of options available.