The Inquisitor is a single-level Doom II PWAD, created by Shadowman and released on October 7, 2012. It consists of a large map for the GZDoom engine, dubbed "The Land of the Damned", in which the player wakes up without any initial weapons, and will have to face many new undead monsters and utilise unique weapons and items in their quest to escape.
The map originates from a competition held at iddqd.ru between July and August 2012, during which a map created by a random map generator would be modified extensively but while maintaing the initial map's vertexes and without exceeding the rectangle outlined around the initial map for gameplay areas. Shadowman embellished the map through heavy use of GZDoom effects and custom resources, making it stand out even among other thematically similar works by the author such as the Cheogsh and Kobal series. Two sequels, The Inquisitor 2 and The Inquisitor III, would be released on 2013 and 2016 respectively.