OpenJK is an effort by the JACoders group to maintain and improve the game engines on which the Jedi Academy (JA) and Jedi Outcast (JO) games run, while maintaining full backwards compatibility with the existing games. According to the official website, support for Jedi Outcast is rudimentary and not very well tested, so it is not built by default. If you want to build it, pass "BUILDJO=yes" on the command line. You will need the game data from Jedi Academy. If you don't already own Jedi Academy, you can buy it from online stores such as Steam, Amazon or GOG. Copy the contents of the GameData/base directory to /opt/JediAcademy/base and/or /opt/JediOutcast/base. By default, the games only support 4:3 resolutions. For modern monitors you have to create /opt/JediAcademy/base/autoexec.cfg and/or /opt/JediOutcast/base/autoexec.cfg (change the resolution and FOV to your needs): set r_customWidth "1360" set r_customHeight "768" set r_mode "-1" vid_restart cg_fov "97" cg_fovaspectadjust 1