Treebore
First Post
You're never quite "wrong" in Greyhawk, which is one of its beautiful elements.
The original Blackmoor is a different place.
But in my Greyhawk, the Temple of the Frog exists, the Comeback Inn exists (about the only bit of civlization left in ruins of Blackmoor City), and the City of the Gods is out there, somewhere, and unexplained.
You can go a "sci fi intrusion" version or a "fantasy tech with clockworks" version about equally well. I'm sure there are more ways to do it too.
Dungeon magazine, under Paizo's tenure, had several good adventures in the area.
When I decided to use Blackmoor in the Greyhawk area labeled Blackmoor I used all the maps from the Blackmoor supplements. So it was the "real" Blackmoor the way I ran it. They were just very exclusionary and a lot of people didn't like going into Blackmoor any more than they liked going into the lands of Iuz or the Kingdoms of the East, etc... It worked perfectly. Even when players noticed certain maps didn't match up with the over all shapes of the GH map I just said, "Hmmmm, I wonder why that would be?"
Then I would get the lame unimaginative response of, "TSR did the maps wrong."
Then I would say, "Or, more likely, someone in Blackmoor doesn't want accurate maps outside of Blackmoor."
Which actually came up in play when I ran City of the Gods.