Identical in meaning to enshittification, but dropping the superfluous "en" prefix to be less cumbersome and more understandable
During the post-pandemic economic downturn, a broad trend of shittification played out across many popular online services. Netflix imposed device limits, YouTube cranked up the amount of ads, AirBnBs got more expensive and some even assigned chores to guests.
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.