The term refers to a well-known warez group that "cracked" the game's digital rights management (DRM) to allow it to be played without the original retail disc.
Mounting that file was a ritual. You’d right-click, select "Mount to Drive X:" (thank you, Daemon Tools), and hear the virtual DVD drive spin up. FIFA.09-RELOADED.iso
Since the game was designed for Windows XP and Vista, you should right-click the .exe file and set compatibility to Windows XP (Service Pack 3) or Windows 7 . The term refers to a well-known warez group