Spielburg (unofficial)

Spielburg is a land from the Quest for Glory series that has been mentioned in the fan games and fan fiction.

King's Quest II: Romancing the Stones
The Hero of Spielburg is transported to Kolyma, and gives a plug of his recent adventures in Quest for Glory II.

King's Quest III: To Heir is Human VGA
Alexander may be transported to Baba Yaga's hut in Spielburg. She is an acquaintance of Manannan. Since Alexander 'escaped' to Spieburg, she decides she will eat him.

Revenge of the Black Cloak Society
Spielburg - Which this is never visited or seen in the King's Quest series, it is the first land mentioned in the Quest for Glory series. It could be theorized that the settings of both series are divided by a great sea.