FreeDooM
This is a project to create a completely free Doom IWAD. Combined with the GPLed Doom Source, this will result in a completely free (as in soda and speech) game.
You'll need a Boom-compatible source port (such as ZDooM, which you can get
here ) in order to play the FreeDooM IWAD, which you can download
HERE
During the game, you'll often hear blips and encounter some "FreeDooM Graphic Not Yet Done" sprites.
Ignore them, as free replacements have not yet been found for all the material in FreeDoom. Some of the material in the IWAD are "dummy" material to fill the gap until a replacement is found.
BECAUSE MAP03 IS IN DEVELOPMENT, THAT LEVEL HAS NO EXITS. After you get through MAP02, type IDCLEV04 to warp straight to MAP04