Raith5
Adventurer
The world is more morally grey, as there are many evil empires and nations ruled by dicks.
There are tonnes of dungeons and ruins, as every part of the continent was ruled by two or three long fallen empires or claimed by a mad wizard.
But, mostly, there's a lot of sparse details. Some nations only received a couple paragraphs of detail, while others have a couple pages. As such, it's open to customization from DMs.
It's a world you can make your own without having to create your own map and history. Because so many nations are "evil" it's easy for players to take down the leaders, or claim territory in the empty patches, or otherwise make a difference in the world. So changes are almost encouraged.
Well said. I also dig the morally grey nature of greyhawk. It is a nice mesh of swords and sorcery aka Conan and LOTR style high fantasy. I also like Iuz and the elemental evil dynamics.
But I havent played a game in Greyhawk for over 25 years or so, so it just may be nostaglia colouring my take on it. One thing I seem to remember as a DM was a range of Kingdoms to the west of the world which were too similar - I remember changing them around a bit and making one or two of them overun by monsters.