3 level WAD set in a castle environment. Excessive attention given to the appearence of the levels (texture selection, alignment, lighting, etc...), but game play does not suffer (some great battle areas!).
I use a P90 machine, so I imagine some areas may run slowly on underpowered machines.
iD for DOOM2. Ben Morris for DCK. Mike Reed for proving that the true path is quality over quantity.
New levels from scratch
DCK v3.x by Ben Morris RMB v2.1 by Jens Hykkelbjerg
SMALL texture misalignments here and there, but not really noticable unless you look for them :o