Call of Duty 2 is a first-person shooter video game and sequel to the critically acclaimed game, Call of Duty. Developed by Infinity Ward, with contributions from Pi Studios, and published by Activision on October 25, 2005 for the PC and November 22, 2005 for the Xbox 360. Call of Duty 2 takes place during World War II and features three campaigns where the player can be a soldier for the Red Army, the British Army, or the United States Army. Since the October 13, 2006, the game has also been available to buy on Valve's content delivery platform, Steam. This comes after an agreement with its publisher, Activision.

Call of Duty 2 was the highest selling Xbox 360 launch title, selling 250,000 units in its first week of availability.[1] Call of Duty 2 also was attributed to the large number of Xbox 360s sold, with 77% of people buying an Xbox 360 buying Call of Duty 2; three fourths of people who purchased an xbox 360 purchased call of duty 2. To date, the game has sold over 1.4 million units on the console.

A single player demo featuring a British Army mission in El Daba, Egypt (entitled "The End of the Beginning") from a British perspective was released on September 26, 2005. A special DVD Collectors' Edition also exists, which includes 'making of' documentaries and interviews.

• The #1 WWII shooter development team returns with an amazing new experience: Developed by Infinity Ward, creators of the award-winning Call of Duty. All-new, unprecedented enhancements from stunningly realistic graphics to seamless gameplay, thanks to the revolutionary COD2 engine, groundbreaking AI, and choice-based gameplay innovations. Beautifully rendered snow, rain, fog, and smoke, combined with dynamic lighting and shadows, make this the most intense WWII shooter yet.
  
• New conflicts and enemies to face: Call of Duty 2 brings you bigger battles, with more tanks, troops, and explosions on-screen, and bigger scope, with a wide range of locales and environments across the European Theater. Fight "The Desert Fox" across the scorching sands of North Africa as wave upon wave of tanks clash in the desert. Use rocket-propelled grappling hooks alongside your Army Ranger squad to storm and scale the cliffs of Pointe du Hoc against a relentless German counterassault, and slog through urban chaos as a tank hunter in war-torn Russia.
  
• Rely on your squad as never before: The dozens of Allied soldiers surrounding you are fully aware of the changing situations around them, and will let you know using an all-new, context-sensitive battle chatter system. They will draw enemy fire, lay down cover for you, use foxholes and moving tanks for cover, and warn you of incoming enemy troops and hostile fire.
  
• Choice-based gameplay: Play through missions in the order you see fit. Will you decide to play first as a sniper or as a tank commander? It's your call. Open-ended battlefields allow you to individualize your tactics and choose the order in which you complete your objectives.
  
• Multi player Mayhem: Go online for intense Axis vs. Allies team-based multiplayer action, building on the hugely popular Call of Duty multiplayer modes.