Call Of — Duty Black Ops 2 Pc English Language Pack [portable]

(e.g., you bought a non-English region version), try this first:

Sometimes, the language packs are stored in the Steam Beta branch. This is an official method supported by Steam. Call Of Duty Black Ops 2 Pc English Language Pack

Ultimate Guide to Call of Duty: Black Ops 2 PC English Language Pack you bought a non-English region version)