1983's Pinball Creation Kit was one of the very first home game makers.  Created by Bill Budge who sold his games in zip lock bags directly to computer stores in the beginning. Electronic Arts quickly found him and offered him a distribution deal.

This is the Commodore Version of Bill Budge's Pinball Creation Kit.
It looks great, and is in near new condition.
The disks were last tested in 2013, and have been stored properly since then.