Game Data --------- qzdoom is only a game engine. To actually play the game, you'll need the game data (IWAD file) from one or more of the supported games. These include Doom, Ultimate Doom, Final Doom, FreeDoom, Heretic, Hexen, and Strife. Place the .wad file(s) in /usr/share/games/doom. If you don't own any of the supported games, you can install one or more of these slackbuilds.org packages to get a playable game: - freedoom - doom_shareware_data - heretic_shareware_data - hexen_demo_data - chexquest3 Music Support ------------- To hear the in-game music, there are several options. In the game menu, select "Options | Sound Options" and set "MIDI Device" to one of the below: 1. FluidSynth - Install fluid-soundfont. This is a runtime dependency (no need to rebuild qzdoom). 2. Timidity - Install TiMidity++ and either eawpats or freepats (all runtime dependencies), and set up /etc/timidity/timidity.cfg to use it. This uses more CPU than FluidSynth, and may make the framerate stutter and jerk even on high-end systems. 3. GUS or OPL - Nothing extra required; these are software emulations of classic soundcards from the early 1990s. They may sound "clunky" to modern ears, but they may also bring back fond memories for long-time Doom players. qzdoom also supports WildMIDI, but this is currently not available on SBo.