Developed by several members of the design team responsible for Medal of Honor: Allied Assault, Activision's Call of Duty is a first-person shooter set amidst the chaos and turmoil of World War II. Players begin the game as an infantryman armed with a pistol and grenades, with additional weapons in the form of rifles, machine guns, and bazookas earned during their tour of duty. A total of 24 missions are available, spread across three separate campaigns. Players will experience the war through American, British, and Russian points of view, allowing them to step into the roles of three soldiers on the front lines who must endure three different operations. Vehicles such as tanks, jeeps, and more can also be commandeered for the war effort.

From the American perspective, players will take part in the events leading to the D-Day Invasion after first being dropped behind enemy lines. The British campaign involves the assault on Pegasus Bridge, while the Battle of Stalingrad serves as the backdrop for the Russian storyline. The one constant in each campaign is that players will not be alone in their missions, becoming part of a squad that fights together as a team, providing cover fire, dragging wounded comrades to safety, sabotaging key installations, and offering each other support. Battles will take place within towns, forests, POW camps, and more, with mortar fire, enemy snipers, and other hazards lurking at every corner. Call of Duty uses an enhanced version of the Quake III engine, previously implemented in Activision's own Return to Castle Wolfenstein. ~ Scott Alan Marriott, All Game Guide