The goal of dhewm 3 is bring DOOM 3 with the help of SDL to all suitable platforms. Compared to the original DOOM 3, the changes of dhewm 3 worth mentioning are: * 64bit port * SDL for low level OS support, OpenGL and input handling * OpenAL for audio output, all OS specific audio backends are gone * OpenAL EFX for EAX reverb effects (read: EAX-like sound effects on all platforms/hardware) * Better support for widescreen (and arbitrary display resolutions) * A portable build system based on CMake This engine will only work with the original Doom 3 and Resurrection of Evil expansion pack and not the newer Doom 3 BFG. To build the dedicated server or to disable building the base game code, the core or d3xp game code use: BASE="no" CORE="no" D3XP="no" SERVER="yes" ./dhewm3.SlackBuild Doom 3 and the Resurrection of Evil expansion pack data are not included with dhewm 3 and are still covered by the original EULA. They must be acquired separately such as from the retail DVDs or with SteamCMD. The data pak00*.pk4 files need to be placed in the Doom 3 data directory (/usr/share/games/dhewm3/base) and for RoE (/usr/share/games/dhewm3/d3xp), symbolic links to the data directories will work. For those using the CDs/DVD to obtain the game data, the official 1.3.1 patch for Linux will also be needed. For example: sh /path/to/doom3-linux-1.3.1.1304.x86.run --tar xvf --wildcards base/pak* d3xp/pak*