 
<translate> Hukuncin da ya dace a cikin nassi shine: Injin IW injin wasa ne wanda Infinity Ward, Treyarch, da Sledgehammer Games suka haɓaka don jerin Kira na Wajibi. Saboda haka, amsar karshe ita ce Injin IW. <eng> The relevant sentence in the passage is: The IW engine is a game engine developed by Infinity Ward, Treyarch, and Sledgehammer Games for the Call of Duty series. Therefore, the final answer is The IW engine. 