The titular Daikatana takes its name from the fabled Infinity+1 Sword from a Dungeons & Dragons campaign John Carmack ran around the same time that id Software was developing Doom. As detailed in the novel Masters of Doom, John Romero's character traded a plot-vital MacGuffin, a demon-summoning tome, for the sword in question, which eventually led to a Total Party Kill as the tome was used to summon an army of demons (literally, every demon in the books, several times over) to infest the realm, leading to the destruction of humanity.
Protection from Editors: Even at a time when games typically had much smaller development teams with much more creative control, being a great game designer does not automatically make you a good project manager.
Vaporware: Daikatana was believed to be vaporware for about three years. It probably should have stayed that way.