Which company produced Call of Duty?

Call of Duty is an FPS game series, which was originally produced and released by Activision Company (now Activision Blizzard, announced its merger on February 2, 2007) in 2003.

Call of Duty series Online games include: Call of Duty Online, Call of Duty: Elite (discontinued) and Call of Duty: Theater; Official mobile games include Call of Duty: Commando, Call of Duty: Hero and Call of Duty Mobile Games.

Related information:

Call of Duty uses the enhanced engine "Return to Wolfenstein Castle" (that is, Thor's Hammer III engine), so it can achieve amazing results in picture performance. For example, in the Battle of Stalingrad, the engine perfectly showed a large number of soldiers and players crossing the river by boat and collecting ammunition to attack Red Square.

In the village of St. Mogris, American troops destroyed German artillery positions, and Baston fought in the snow. The visual effects such as explosion, breaking the city and character movements are even more remarkable. When the player is bombed or the bomb is detonated, the player's character will even lose consciousness instantly and his vision will be blurred for a while.