

To be fair, nothing on the face of this box indicates any relation to chocolate anyway, except the company brand by implication. My only other clue as an outsider was that the wording “Dairy Milk” was just a little too weird to be taken at face value.
Same era, I used to playing games on my calculator. I suppose you still can, but I used to do it. I remember I had RISK on my TI-89, but the games on my TI-82 were on par with the version of snake shown in the post. We would even trade the games around with the kids that didn’t have a computer and/or Internet at home. We’d connect them with funky little cables that looked like audio jacks.