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.

In its first five days alone, the game sold an estimated $550 million worldwide, outpacing five-day worldwide theatrical box office gross figures for such films as Avatar, Harry Potter and the Half-Blood Prince and The Dark Night, according to internal Activision estimates and boxofficemojo.com.

"Call of Duty: Modern Warfare 2 has exceeded our expectations and shattered theatrical box office and video game records," said Robert Kotick, CEO of Activision Blizzard. "There are only a handful of entertainment properties that have ever reached the $1 billion mark, which illustrates the power of the Call of Duty franchise and mass appeal of this game."

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)

Xbox 360 Modern Warfare 2 Limited Edition Console, will be sold in Europe, the Middle East (UAE, Saudi Arabia), UK, US, Canada, Mexico, Colombia, Chile, Australia and New Zealand.