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Games in which the player shoots things to progress, usually with a variety of guns, and other times with bows and arrows.

Taking place after a huge catastrophe (eg. man made or natural disaster). See also the more political theme dystopian.

Shambling undead humans who died after being infected by some sort of virus and are now "alive" again, commonly known for the desire to kill living human beings. Commonly paired with the (post-)apocalyptic genre.