Before Doom became the lean, mean murdermachine we know and love, Id Software had far bigger plans for their seminal satanic FPS. Ideas dropped during development include a big focus on story, four playable characters, elemental shields, demonic weapons, and more. The mod Doom Delta brings to life many such ideas from sources including an old design document and leaked alpha builds, which I think makes it fanfic? A new version of Doom Delta launched last week, offering a curious vision of the many Dooms Id didn't make.