Quake II

Quake II is a 1997 first-person shooter game developed by id Software and published by Activision. It is the second installment of the Quake series, following Quake. Developed over the course of a year, Quake II was released on December 9, 1997. In contrast to the first game, which featured a combination of science fiction and fantasy elements, Quake II entirely drops the latter elements and is set during humankind's war against a rogue alien race known as the Strogg, half-mutant half-machine creatures whose homeplanet, Stroggos, is the target of the humans' invasion force.