 
<translate> Tambaya: Injin IW injin wasa ne wanda Infinity Ward, Treyarch, da Sledgehammer Games suka haɓaka don jerin Kira na Wajibi. Injin asalin ya dogara ne akan id Tech 3 a matsayin ainihin sa, tunda injin ɗin kansa mallaki ne tare da haɗawa da GtkRadiant ta id Software. An yi amfani da shi ta Infinity Ward, Treyarch, Raven Software da Sledgehammer Games.  Tambaya: wace injiniya ce take aiki da kira na aiki? Bari mu ba da rafi na sani na farko: <eng> Q: Context: The IW engine is a game engine developed by Infinity Ward, Treyarch, and Sledgehammer Games for the Call of Duty series. The engine was originally based on id Tech 3 as its core, since the engine itself is proprietary with inclusion of GtkRadiant by id Software. It has been used by Infinity Ward, Treyarch, Raven Software and Sledgehammer Games.

Question: what engine does call of duty run on? Let's give stream of consciousness first: 