Inspiration

"Dark Doom" by Josh771. No code used.

Code

Kinsie: Fancy Doom
Gutawer: Code template for per-sector iteration
FishyClockwork: Lighting adjustment code
phantombeta, Marisa Kirisame: Sector light effect removal suggestion and code
Accensus: Iterator for extraneous actor removal, addon support

Sounds

mshahen: "Flashlight On/Off Clicks" (freesound.org, 271109, modified) CC BY 3.0

Testing

Fort of Hard Knox, a1337spy, Orange Bomb: Multiplayer flashlight testing in Hideous Destructor

Graphics

Accensus: Nice logo for DarkDoomZ