Gothic99, also known as Gothic98/99, is a highly detailed 8-level Deathmatch PWAD for Boom that acted as a sequel to GothicDM and GothicDM 2. At the time, the WAD was infamous for being detailed to the point of being unplayable on some computers.
Two of its levels were released on December 25, 1998 as Gothic 98 on Doomworld without a reference to its authors other than the email address Gothic98@doomworld.com. Eric James "Ricrob" Roberts was the first to recognize the level design, music, and graphic design signatures as being the work of Matthew "Mattrim" Dixon, Daniel "The Waffle King" Twomey, and Marc "Fanatic" Pullen.
On December 25, 1999, the two levels were re-released alongside six extra levels as Gothic 99.
- Matthew "Mattrim" Dixon
- Martin "Cocoon" Friberg
- David "Dagger" Gevert
- Derek "Afterglow" MacDonald
- Collin Potratz
- Marc "Fanatic" Pullen
- Michal "msquid" Mesko
- Andrew "Linguica" Stine
- Daniel "The Waffle King" Twomey
- Qingshuo "piXel reX" Wang
- Michal "msquid" Mesko is listed under authors; however, he only contributed level intermission graphics. His unfinished level intended for this project was instead contributed to Crucified Dreams.
- MAP06 by Derek "Afterglow" MacDonald appeared as Crucified Dreams MAP03, entitled "The Great Below (Sunk)", an expanded version modified by Malcolm Sailor.