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Deus Ex: Nihilum (DXN, DEN or Nihilum for short) is a First Person Shooter mod taking place in an alternate Deus Ex continuity. It features new made-from-scratch original content, while also extensively featuring material from the UNATCO Born mod (used with permission from fender2k1, UB's project leader) and Deus Ex: Revision (used in accordance with the mod's license).