The Secret of the Nautilus is a 2002 adventure video game, inspired by Jules Verne's science fiction novel Twenty Thousand Leagues Under the Sea. It was developed by Cryo Interactive and released for Microsoft Windows based PCs. The game is set under the sea in the 21st century, where during a scientific assignment, a young oceanographer enters into a strange type of submarine hidden on an undersea rock shelf. The vessel turns out to be the famous Nautilus which was abandoned a great many years earlier by its Captain, Nemo. The game features many puzzles to solve. Source: Wikipedia, "The Mystery of the Nautilus", available under the CC-BY-SA License.