Call of Duty 4: The FPS that ACTUALLY changed everything

Call of Duty 4: Modern Warfare hit 19 years ago. And yeah, we've heard it all before, 'genre-defining,' 'revolutionary.' But this time, they weren't entirely wrong. It traded familiar battlefields for a global modern conflict and threw in an online multiplayer progression system that… well, you know how that turned out. Suddenly, every other shooter felt a little, dare I say, dated.