Some examples are Kali for security testing, DragonOS for software-defined radio, or Hannah Montana Linux for certain music fans.
Anyone can roll their own Linux distribution with the right tools, including [Shadly], who recently created one which only loads enough software to launch the 1993 classic DOOM…. It loads the Linux kernel and the standard utilities via BusyBox, then runs fbDOOM, which is a port of the game specifically designed to run on the Linux framebuffer with minimal dependencies.
Their report includes video of the distro booting up and playing Doom.
“The entire distribution is placed into a bootable ISO file that can be placed on any bootable drive.”
Read more of this story at Slashdot.