In Shadorgian mythology, Kebsis is the lord of all things foul in general, and the master of poop in particular. He is usually depicted as a fairly benign entity, often taking the guise of a masked poop-avatar to fight criminals and wrongdoers at night. In other eras he is seen as a Satan-like figure, killing innocents with crap and flinging them into his poo and vomit filled dimension, leaving them there to their shitty fate for all eternity.
'If you flush the toilet three times after midnight and then crap on the floor, Kebsis will come to get you.'
n. software that is no longer sold or supported by the original publisher / developer, often found as free downloads on the internet because it cannot be obtained elsewhere. Not legal, but often seen as morally acceptable because the company that made it is no longer selling the title, nor releasing it as freeware, therefore abandonware is "keeping the gamealive", so to speak.
Doom II is not abandonware because idstill sells it, while The Incredible Machine is not sold, therefore is abandonware.