It's the 2nd edition base set.
But...but...The Monster Manual disclaimer says mind flayers DON'T run the D&D design team, and that comes straight from Illithids of the Coast, I mean Wizards of the Coast.
As someone who started gaming during 2E, well after Greyhawk heyday, I'd appreciate if a kind soul were to tell why it is such a well-regarded setting. I know the basics, sure, I've read about it online, but I've never really understood what makes the setting tick, what is it that engenders such fan loyalty for what is ultimately a fairly generic sword and sorcery setting? This question isn't meant to be taken confrontationally, but as a sincere query on my part.
As someone who started gaming during 2E, well after Greyhawk heyday, I'd appreciate if a kind soul were to tell why it is such a well-regarded setting. I know the basics, sure, I've read about it online, but I've never really understood what makes the setting tick, what is it that engenders such fan loyalty for what is ultimately a fairly generic sword and sorcery setting? This question isn't meant to be taken confrontationally, but as a sincere query on my part.
Greyhawk was only partially populated, so we could easily insert our own cities, adventure areas, kingdoms, whatever. We could make it our own.
As someone who started gaming during 2E, well after Greyhawk heyday, I'd appreciate if a kind soul were to tell why it is such a well-regarded setting. I know the basics, sure, I've read about it online, but I've never really understood what makes the setting tick, what is it that engenders such fan loyalty for what is ultimately a fairly generic sword and sorcery setting? This question isn't meant to be taken confrontationally, but as a sincere query on my part.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.