A large (63549 linedefs) map for First-Try Demo Contest #16, which was held at 10.31.2015 14:00 UTC. The archive contains demo files for 15 contest participants and table with results, located in "fdc16" subdirectory. The demo files have been corrected to run properly with this version of wad (skill 2 instead of skill 4)
It is recommended to use "Hey, not too rough" (contest difficulty) or "Hurt me plenty" for first walkthrough. "Ultra-Violence!" for hardcore players only!
Music - Skaven (Beyond the network), Titlemus - moon shining by acetip, Intermus - Rock by The Quality Quartet Textures - cc4tex.wad, Afterglow textures, Realm667 Testing - skepticist, Da Werecat Title - redsorceress.com/skybox.html
New from scratch
1.5 months (although I had an idea of building such a map since 2011)
GZDoom Builder 2.3, SLADE 3, WCleaner 1.1, boomlightgen and warpgen (were written specially while working on map)
You could get stuck in red key hall (between broken column and wall, see vdgg's demo) Outdoor rendering is broken in GZDoom and Eternity.