Xbox 360 could handle up to 8 players on Xbox Live. Multiplayer for Call of Duty 2 could be set up for up to 64 players for Windows PC. However, a player can recover health by avoiding damage for a period of time.

If the player in Call of Duty 2 takes critical damage, the entire screen will turn red, with the audible sound of the player’s heartbeat getting louder the closer they are to death. Players can be instantly killed by lethal damage, such as those received from explosives and tank shells. The COD 2 HUD features a compass, which indicates where allies, enemies, and important markers for missions, such as defensive positions or enemy artillery and armor that must be destroyed using explosives. At one point in the campaign missions, a player can take control of a tank. Players can also take control of weapons emplacements such as heavy machine guns and flak cannon platforms. There are also fragmentation and smoke grenades that have become a staple for modern first person shooter games.

By choosing the iron sights, players can aim their guns more accurately. These can be swapped with other weapons found in the battlefield. In Call of Duty 2, Players can carry two firearms at any given time. Players will take control of Private Vasili Ivanovich Koslov during the Battle of Stalingrad, Sergeant John Davis in North Africa and later in the Battle of Normandy, and Corporal Bill Taylor during D-Day. The Story Campaign for Call of Duty 2 is divided up into 4 mini-campaigns that follow 3 different stories set in the World War 2 era.

While the health bar has been removed, the display will change depending on the player's current health level (including an increasingly loud heartbeat, if the player has taken serious damage). New features in COD include regenerating health through rest and avoiding incoming fire, as well as a streamlined HUD that features icons that alert players of important battlefield situations. Set during important battles during World War 2, the single-player campaign has players take on the roles of American, British, and Soviet officers as part of the Allied offensive against the Axis forces. After being announced in April of 2005, the game was released first on Microsoft Windows PCs in October of that year. Set during World War 2, Call of Duty 2 is the direct sequel to the first mega-popular first person shooter Call of Duty.

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