Q3DM13: Lost World

Trivia

 * The map features numerous examples of Doom imagery, such as the Icon of Sin.
 * One of the rooms has a section of torn flesh held by metal bars in its ceiling, revealing a fanged mouth. The whole thing resembles the infamous Goatse shock site (which was also referenced in Doom 3).
 * One of the most popular duel maps in the history of Quake 3.