Hacked and Cracked

Adjective,

A homebrew version of a system or game that has been modified to the point where it's barely recognisable. It is usually created with little care, and to chaotic, completely foreseen effect.

"We're going to play my new hacked and cracked version of D & D. I haven't tested it yet, but I think it will be WILD!"

Hack it 'til you crack it

Commonly used in software engineering. A phrase describing building quick fixes on top of quick fixes until they solve the problem.

"Should I write a proper implementation for this?" - "Nah, hack it 'til you crack it!"