LudOS is a 'Just enough OS' Linux distribution for running Ludo on hardware like PC or the Raspberry Pi. LudOS is based on LibreELEC 9.0 with a few minor changes.
To install LudOS, you can download the latest release and flash it on a bootable media like a USB drive or an SD card. Flashing can be done using dd or Etcher. Just like you would install LibreELEC or Lakka. Installing LudOS will wipe all previous data on your disk.
LudOS is not ready for production and contains bugs. However, you can get some help on our Discord.
The license of LudOS is the same as the one of LibreELEC, but adds some packages like Snes9x or Genesis Plus GX that are protected by a Non-Commercial license. Thus, you can't sell LudOS or a derivative without removing these packages.