HDoom

H-Doom is a pornographic modification for Doom which replaces the game's weapon and enemy animations with, turning most demons into nude female counterparts and adding adult animations for the Doomguy. It also features a work-in-progress visual novel system. Currently, the latest version available is tech demo 8a build. It can be played with The Ultimate Doom, Doom II, and Final Doom. Use of ZDoom source ports' required.

Bugs
If using an older version of a Zdoom-based sourceport, the camera for viewing the adult animations will not work properly.