While the campaign only lasts about 4 hours or so, there's so much variety. Take all of that, fast-forward 10 years, and then stick the game in a current generation engine and you have a game that holds up, and is better, than any recent Call of Duty game. The movement was fluid, the pacing was perfect, and the opening scene on the ship is something I will never forget. The maps were fantastically designed and the weapons felt amazing to shoot. Being able to earn ranks and upgrade your weapons over time? That was Call of Duty. That sound you hear when you hit an opponent and the X that appears in your crosshairs when you nail them? That was all Call of Duty. The multiplayer rewrote how first-person shooter online play should be. Each level was carefully laid out with memorable moments and varied gameplay that most first-person shooters didn't do 10 years ago, and that's just the campaign. It was a groundbreaking game despite where the series has gone over the years. The cinematic gameplay and delivery of CoD4 was unheard of back in the day and helped push that generation of consoles forward. I remember watching the E3 reveal video of the 'All Ghillied Up' level and being blown away. When a game as big as Call of Duty 4 gets remastered it takes you down a trip of serious memory lane.
