Wild:Island/Solipsism
From Drinking and Dragons
Solipsism
Once a resort destination for philosophers and sages, it was corrupted by dark forces from the dream realm. A mysterious brain in a jar enslaved the people, in conjunction with the evil Xannifer. These evil forces were thwarted and the island returned to its previous state.
About the island are gateways that join the physical plane with the dream world.
The party found themselves pulled to the island of Solipsism after crossing the threshold of the Pink Priaprism. They departed by using the dream realm to dream themselves elsewhere.