Doom v0.3

Doom 0.3 was an alpha version of Doom.Though apparently never released to id's alpha testers, this build was sent to several industry professionals for comment and review and as a result only resurfaced at a later time compared to the other alphas. Notable features include several maps in their earliest known forms and a fully functional on-screen automap. It much more fully displays the DOOM engine in its earliest state than the tech demo, with an internal architecture significantly different and less advanced than later builds. Crashes are common, especially when walking over two-sided lines. The README file promises a more proper release to follow in two weeks, but such a release is not presently known to exist.