In hindsight, was that an official Namco/Bally-Midway thing? Ya know, it was over 40 years ago and I'm going from memory. But now that you question it, and aft

In hindsight, was that an official Namco/Bally-Midway thing? Ya know, it was over 40 years ago and I'm going from memory. But now that you question it, and after a bit of reading, it would seem that the patterns just changed (as sibling comment states). All I know is, I showed up for a round of Pac-Man at the local 7-11 in Danville, IN after my part-time high school job, and the patterns didn't work anymore (or quit working after a point a few levels in, don't recall).