Thread:Deathstalker666/@comment-1496755-20151224121621/@comment-1496755-20160403220710

And don't forget Wolf 3D too - originally it was supposed to be more complex too. Planned features included swapping uniforms, dragging and hiding bodies, etc. More RPG-esque elements! But all swept away by the concept of a straightforward and more fast-paced gunfest.

Some of 0.4's assets have popped up elsewhere, actually - I have seen some Doom mods that use those rifle sprites.