Quake II, released on December 6, 1997, is a first person shooter game developed by id Software and distributed by Activision. It is not a sequel to Quake; it merely uses the name of the former game for commercial purposes. The soundtrack was provided by Sonic Mayhem, with some additional tracks by Bill Brown. The main theme was by Rob Zombie.A direct sequel, titled Quake 4, was released in October 2005 for the PC, and later for the Xbox 360 and the Apple Macintosh.