The idea for the map is based off of those old Fighting Fantasy books where you used dice and a pencil. It gets its name from the first book, The Warlock of Firetop Mountain. Back in the mid to late 90s I sketched out the map as described in the book and decided to make a Doom level based on it. The floor plan I sketched is long lost, so apart from the beginning of inside the mountain, the rest has been newly created from scratch.
The usual: id, Randy & Graf, CodeImp & MaxEd for GZ/DoomBuilder SlumpEd, Slade 3, and the Realm667 Bestiary.
A big, BIG, shout out and mad props to Rex Claussen whose advice and help kept me motivated to improve the project. Also, Rex did the preliminary work on sloping the outside of the mountain which really inspired me to take it further, and he provided the rock texture as well... what a top bloke!
Eriance for Decorate questions on the Warlock/Diabloist
Enjay and his thread on EndSequence Cast stuff on the ZDoom forums.
The following guys answered my noob editing questions on the DW & ZDoom forums: Phml Pottus GreyGhost chubz Eponasoft Xaser Gez BloodyAcid Eriance
Modified the my Firetop Mountain, which was about 10% of what you see here when I first started this project in March 1997. Second modification on the original FTOPMTN.WAD which I released in May 2012.
100 hours or so over 5-6 months. I'm slow and my mapping sessions aren't very long, but frequent ;)
GZDoomBuilder v1.12, Slade 3, Paint.net, Audacity v1.3beta Doom Builder v220.127.116.116, SlumpEd v0.7 Originally used Deu 5.21 and BSP v1.1TC in 1997