In a million years, barring profound shifts, the climate should have returned to its natural rhythms but any cities buried in sediment by rising seas should still be preserved,
along with those signs of anthroturbation, human - induced disturbances underground, like the plutons from underground
explosions of nuclear
bombs.
Along the way, they can pick up power - ups that allow you to plant multiple
bombs at once, increase the length of the
explosions, allow you to throw your
bombs, and so forth.