The file is the official executable file used to launch the single-player campaign and Zombies mode of Call of Duty: Black Ops II (developed under the internal project name "T6").
t6sp.exe is an executable file associated with Call of Duty Black Ops 2, specifically a patch file used to update the game. The "t6" likely refers to the game's codename, and "sp" might stand for "single-player" or a specific patch designation. call of duty black ops 2 t6sp.exe download
is the executable file that tells your computer to start the game. The file is the official executable file used