A mountain beaver is like a large rat, and lives along the western coast of the united states. It is generally brown has a stubby tail, beaver like teeth, and killer claws. Mountain beavers are nocturnal and are difficult to find, like yeti's.
Katrina: Dude what was that
Marina: It was the beast of the forest, a Mountain Beaver Katrina: It looked fierce, I wouldn't want to go one one one with one of those!
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.