The world may be the center stage for most of the games we've explored, but Metro 2033 is placed inside of Moscow, stretching through most of the subway systems beneath the surface. The nuclear war of 2013 found most of Russia being targeted with nuclear missiles, which irradiated those who weren't lucky enough to scramble to safety underground. Those unlucky enough to be left above ground mutated into bizarre creatures known as the Dark Ones, which of course, cause trouble for the player around every turn.