A screenshot from Call Of Duty 4: Modern Warfare. First-person shooters have been around for decades, going back to the early 1970s. It took some time for the genre to develop into the expansive juggernaut it is today, and there are tons of excellent IPs. These days, FPS games’ focus has largely shifted away from single-player campaigns to multiplayer, which makes sense, as it […] The post 6 Best FPS Single Player Campaigns, Ranked appeared first on ComicBook.com .