When a band is still performing with just one or none of the original start-up members, performing songs written by the original members, and using the same gimmicks of the original members to draw a crowd. And it's just a matter of time before the original members and/or songwriter notices and sues their ass to shut them down.
"KISS hasn't exceeded their bandwidth yet, but I say it's only a matter of time."
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.