Doom v0.5

Doom 0.5 was an alpha version released 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.
 * Moving floors and working doors.
 * Automap

Levels
Several levels are included:


 * 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