Picking up immediately after Call of Duty 4: Modern Warfare, Modern Warfare 2 places players against a new threat pushing the world toward collapse. Its single-player story supplies the dramatic backdrop, while the design branches into distinct ways to play rather than keeping every activity inside the campaign.
Special Ops is a separate, online cooperative mode for two players, built around time-trial and objective-based missions. Its challenges draw on campaign highlights, familiar material from the earlier game, and missions made specifically for Special Ops; completing them unlocks more missions with greater difficulty. That structure gives co-op its own progression and purpose alongside the story.
Multiplayer, meanwhile, emphasizes customization and varied combat setups. Players can build classes with secondary weapons such as machine pistols, shotguns, handguns, launchers, or riot shields, then pair equipment and perk upgrades with customizable killstreaks.
