Overall, the campaign is Call of Duty: Modern Warfare’s strength. Its well-designed missions make for excellent weapon testing grounds and feature a slew of interesting mechanics that wouldn’t work anywhere else. Some of its best parts come about because of the secretive nature of this war, and that includes some heavy moments that are generally done well. The multiplayer, meanwhile, maintains its smooth gunplay and has great weapon customization to go with it, but those don’t matter when having to play on this disappointing batch of launch maps. Still, Modern Warfare’s gorgeous new Realism mode, the large-scale Ground War, and quick and dirty Gunfight help mix things up for a good time.