Infinity Ward

Infinity Ward, located in Encino, California, is an American video game developer founded in 2002 by 22 former employees of 2015, Inc., including the project leads who had worked on Medal of Honor: Allied Assault. The company was acquired by Activision in October 2003, and currently consists of nearly 100 employees. Infinity Ward is responsible for the development of the video game Call of Duty and three other installments in the Call of Duty franchise.

Reception
Infinity Ward's first title, Call of Duty , won over 70 Game of the Year awards and 50 Editor's Choice Awards. It also continues to be among the highest-rated games for the platform, according to Game Rankings. Call of Duty 4: Modern Warfare has also enjoyed massive commercial and critical success, selling over 13 million copies from its release in November 2007 through May 2009.

In 2009 Infinity Ward's sequel to Call of Duty 4: Modern Warfare, Call of Duty: Modern Warfare 2, Earned over $550 million in its first five days on the market, with $310 million of that being sold in the first 24 hours.

Game engines
The first two Call of Duty games utilized the id Tech 3 (Quake III Arena) engine. The sequel made use of a heavily modified version of the id Tech 3 engine which featured more powerful visuals and DirectX 9 support.

Infinity Ward's Call of Duty 4: Modern Warfare runs on a proprietary game engine with features that include true world-dynamic lighting, HDR lighting effects, dynamic shadows and depth of field. The engine was not used in any of the company's previous games. Both Call of Duty: World at War and the James Bond video game Quantum of Solace were developed by Treyarch using modified versions of Infinity Ward's engine.

Call of Duty: Modern Warfare 2, Infinity Ward's most recent project, utilizes a new proprietary engine dubbed "IW 4.0", which they claim is a generation more advanced than the engine used in Call of Duty 4.

Games
During the making of Modern Warfare 2 one of the staff of infinity ward daughter died during development, so that is why there are teddy bears scattered all over the maps. But then again it is just a Theory. Since there is no proof of it. Because if there was, there would be a  name provided.