In addition to the single-player campaign, Call of Duty 3 features a wide range of multiplayer modes for players to participate in  each team allowing up to 24 on the PlayStation 3 and the Xbox 360, and 16 for the PlayStation 2 and Xbox in a single match. This is only in the online mode.

Call of Duty: Modern Warfare 3's offline multiplayer is now available to play, presumably due to a technical glitch within the game itself. After backing out of attempting to play online, an error message will appear, giving players the chance to play offline.

Her psychic powers mutate the smallpox virus into a new strain of virus, called the "ring virus", one that causes anyone who contracts it to die, seemingly of fright, within a week. By Ring, in 1991, the Izu sanatorium, including the well that Sadako was thrown into, has been rebuilt into a mountain resort.

Sadako found out that she had leukemia. At that time they called leukemia the A-bomb disease . There was a low survival rate for 'A-bomb disease and Sadako was very scared. During Sadako's stay in the hospital, her best friend, Chizuko, came to visit her.