Upon hearing about the story of Treasure Island, Nobita dreams of discovering and exploring his own treasure island, despite the fact all of the Earth has been mapped already.
Doraemon: Nobita's Dinosaur
Doraemon: New Nobita's Great Demon - Peko and the Exploration Party of Five
Doraemon: Nobita's Great Battle of the Mermaid King
Doraemon: Nobita's Chronicle of the Moon Exploration