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

Subgenre of Horror, where player's character is usually more vulnerable and under-armed, usually focusing on evasion, stealth and/or puzzle-solving, rather than combat.

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.