I found an easter egg from 1977
While I am not implying these were used as such, another purpose these complicated sequences can hold is as a code trap for clone detection.Code Traps:https://arcadeblogger.com/2019/06/29/atari-centipedes-hidden...And the discussion here a month ago about code traps: https://news.ycombinator.com/item?id=20312256Along similar lines in both the digital and non-digital world people would include false landmarks and roads on maps to detect copying, since while facts are not protected, fake places are https://en.wikipedia.org/wiki/Trap_street