Doom v0.5

Doom 0.5 was an alpha version of Doom, released on May 22, 1993 to testers. This version included a number of features in addition to those found in the Doom 0.4 alpha version:


 * Collision detection between objects. It is possible to walk into monsters and pick up items.
 * It is possible to shoot monsters. There is still no animation at this stage, however; when monsters are shot, they simply vanish.
 * A working status bar and the ability to change the screen size.
 * A working menu.
 * Animated floors and working doors.
 * An Automap.
 * Skill levels. The easiest is "I just want to kill", rather than the release version's "I'm too young to die".
 * The rifles sprite has changed, though the bayonet uses the same sprite.

After the player quits the game, the "farewell" screen states that it is a preview of Doom: Evil Unleashed.

Levels


Version 0.5 included several levels, most of which were modified and used in the release version of Doom. Level 6 was held back for Doom II. Unlike the previous alpha versions of Doom, the player could transition between levels.


 * Level 1: not used in the final game
 * Level 2: E2M2
 * Level 3: E2M3
 * Level 4: E1M7
 * Level 5: E3M3
 * Level 6: MAP10
 * Level 7: E1M4
 * Level 8: E1M2
 * Level 9: E1M6
 * Level 10: E1M3
 * Level 11: E2M7
 * Level 12: E1M8
 * Level 13: E2M4