Download the latest release for your system from here.
Locate your /GameData/ folder, if you have the game installed via Steam, you can right click the title in your library, Manage -> Browse Local Files.
Extract the zip you downloaded earlier inside the /GameData/ folder.
Launch the game using eternaljk.x86.exe.
(Optional): Create a shortcut to eternaljk.x86.exe by right clicking it and selecting “Create Shortcut”. Drag this to your desktop for a desktop launcher.
Linux:
Download the latest release for your system from here.
Create a folder for EternalJK located at /home/username/.local/share/EternalJK/ where username is your PC’s username.
Extract the zip you downloaded earlier inside the /home/username/.local/share/EternalJK/ folder.
Create a folder inside /home/username/.local/share/EternalJK/ called “base”.
Copy assets0.pk3, assets1.pk3, assets2.pk3 and assets3.pk3 inside the base folder. If you have purchased Jedi Academy on Steam, you can get these by downloading the game and you can right click the title in your library, Manage -> Browse Local Files.
Launch the game using eternaljk.x86 (or eternaljk.x86_64 for 64-bit systems)
Mac:
Download the latest release for your system from here.