So here's the story.
I will never forget the first time I read that Atari Age article about the "GLS" chip.
I of course came to understand that it was just a joke, (an April Fool's prank),
but it always kind of stuck in my head as a "what if" kind of a thing.
I also remember from that same time period, reading about the "cheating" that
Atari Video Chess computer would do. Kind of an artificial intelligence thing.
And so it always made me wonder if these electronics could sometimes "think"
My friends and I never forgot about the "GLS" chip, and always joked that someday it would come to light.
Well, several years later, when I was heavily into the NES, one of our favorite games to play was Zanac.
An intense shooter with great graphics & sounds. I absolutely loved the music in that game.
We used to play it competitively, both with & without using the NES Advantage (rapid fire & slow mo features)
for both furthest distance and high scores. (we did the same with Track & Field; with & without the advantage)
And we kept separate score logs for each style of play.
Anyhow, Zanac sometimes seemed kind of "odd" certain times when I would play it. Sometimes I was in the zone,
and would kick ass with a great game. Other times it would kick my ass! Well low and behold, we were reading
through the instruction manual one day, looking for tips & tricks and guess what we found?
Atari's joke became REALITY! Zanac had a "GLS" chip!
Here is a picture of the page in the manual describing it.