There are a few signature characteristics of Call of Duty games—at least, the ones developed by series-creator Infinity Ward. First, the games feel real. The story unfolds as you play through a conflict as a few normal soldiers—regular guys on the ground who find themselves thrust into extraordinary events. They aren’t supermen. The campaigns are plausible, even if they’re fictionalized or set in the near future, reinforcing the feeling that the experience could take place in the real world.