Freedoom: Phase 1+2

The Freedoom project aims to provide all the content needed to form a complete,
entirely free/libre game for the Doom engine. It is designed to be compatible
with most custom levels, music, graphics and other modifications ("mods") made
for the original Doom games by Doom fans and artists over the decades.

In 1999 id Software released the source code to their classic game Doom (under
the GNU General Public License). The game as a whole did not get this treatment,
however, which means that while the program code that powers Doom is free, the
actual content of Doom - graphics, audio, levels, setting and characters -
remains proprietary. The Freedoom project aims to fill this gap and create a
complete free and libre first person shooter game.

By itself, Freedoom is just the content of a game and must be paired with a
Doom-compatible game engine to be played: the download page lists some
recommended programs.

Freedoom is actually three entire games, with two single-player campaigns and
one collection of multiplayer deathmatch arenas (FreeDM).

Phase 1 is the first part of the single-player game, containing four episodes
which are nine levels each, smoothly paced for beginner players. It is
compatible with mods for the original Doom and The Ultimate Doom.

Phase 2 is the second major part of the single-player game, a massive 32-level
episode expanding upon the same concepts present in Phase 1, as well as
containing additional monsters and the double-barreled shotgun! The levels in
this game tend to demand more skillful play than the previous episodes. It is
compatible with mods for Doom II.