- Call of Duty Home Page
Official site for the Call of Duty video game series. Includes demos, movies, screenshots, system requirements, and more.
- Modern Warfare 2
Official site for the video game Modern Warfare 2, originally titled Call of Duty: Modern Warfare 2. Set several years after the conclusion of Call of Duty 4, players assume the role of Sgt. Gary "Roach" Sanderson.
- Call of Duty Files
Offers mod files including maps, sounds, skins, and more.
- Call Of Duty HQ
Offers information for multiplayer gaming. Includes forums, servers, and ladders.
- Planet Call of Duty
Includes Call of Duty forums, files, mods, and maps for all versions of the game series.
- Wikipedia: Call of Duty
User-created article for the first person shooter video game Call of Duty. Includes game overview, details of multiplayer modes, screenshots, and links.