Call of Duty: Black Ops was the best-selling Call of Duty game in 2011. It was released in November of 2010 for Xbox, PS3, PC. People have always wondered if a Mac OSX version of a Call of Duty game will be released. Now, in the Steam files, people have found reference of Black Ops to the OSX platform. As you see above, the main game, and all of the DLC is found in ‘OSX’ format.
If Steam officially releases it, then this will be the first Call of Duty game to ever launch on the OSX platform via Steam. Call of Duty 4 was the last COD game released on the Mac platform via digital/disc copy.
SOURCE: Steam Via @Storm360