The flyer states that this is "the first pinball game ever to have the innovative "Add-a-Balls" feature giving player up to 5 extra balls on a single play." According to the manual, extra balls will stack like this only if the Special feature and the Score Thresholds are set to award an Extra Ball. Manufacturer data for Cheetah: Production Start Date: 6/13/80 Production End Date: 11/6/80 Quantity produced: 1223 Included in the Files section are ROMs described as having come from a Cheetah game with a blue cabinet (not black). The ROMs are described as having very different sounds including bonus countdown. Pictured in this listing is a game with a blue cabinet and serial number 1002 that we have labeled as Early Production. We are seeking cabinet pictures of the original factory "black cabinet" version.