Infinity Ward’s Call of Duty: Modern Warfare 2 continues the gripping and heart-racing action as players face off against a new threat dedicated to bringing the world to the brink of collapse.

All PC versions of Call of Duty: Modern Warfare 2 will be powered by Steamworks, providing gamers with auto-updating, anti-cheat technology, Steam Achievements, and the recently introduced Steam Cloud.

Call of Duty: Modern Warfare 2 for PC includes 50 Steam Achievements, enticing players to train a local militia and be "Back in the Saddle" or infiltrate the snowy mountain side base and earn the "Cold Shoulder." Fans may access the game from any computer. And through Steam Cloud, multiplayer game progress will be stored persistently and travel with the player.

The Call of Duty franchise has surpassed $3 billion in retail sales worldwide, according to The NPD Group, Charttrack, GfK and internal Activision estimates.

Since its first release, the award-winning Call of Duty franchise has sold in excess of 55 million units worldwide. The latest title in the franchise, Infinity Ward's Call of Duty(R):Modern Warfare 2, recently shattered box office and video game records with a worldwide estimated five-day sale through of approximately $550 million, establishing the game as the biggest entertainment launch in history.

"Call Of Duty has become one of the greatest entertainment franchises of all time," said Bobby Kotick, CEO of Activision Blizzard, Inc. "If you consider the number of hours our audiences are engaged in playing Call of Duty games, it is likely to be one of the most viewed of all entertainment experiences in modern history."

Key Features :

• Epic Single Player Campaign
  • Epic single-player campaign picks up immediately following the thrilling events from Call of Duty 4: Modern Warfare.
• Special Ops Co-operative
  • An entirely new gameplay mode which supports 2-player co-operative play via online or split screen that is unique from the single player story campaign.
  • Special Ops pits players into a gauntlet of time-trial and objective-based missions.
  • Rank-up as players unlock new Special Ops missions, each more difficult.
  • Missions include highlights from the single player campaign, fan favorites from Call of Duty 4: Modern Warfare and all new, exclusive missions.
• Multiplayer Reinvented
  • Setting a new bar for online multiplayer, Modern Warfare 2 multiplayer delivers new enhancements including:
• Customizable Killstreaks
  • AC130
  • Sentry Gun
  • Predator Missile
  • Counter-UAV
  • Care Package
  • Accolades (Post match reports)
• Create-a-Class evolved
  • Secondary Weapons
  • Equipment - Machine Pistols - Throwing Knives - Shotguns - Blast Shield - Handguns - Tactical Insertion - Launchers
  • Perk Upgrades
  • Riot Shields
  • Bling (Dual attachments)