The Secret of the Nautilus of "The Secret of the Nautilus" had surpassed 117,000 copies. Süddeutsche Zeitung felt that while the game would attract fans of Jules Verne, they would become dismayed by the game's "combintion puzzles". Reviewer Four Fat Chicks felt the small hotspots, and timed sections, let the game down. The Secret of the Nautilus The Secret of the Nautilus (known as The Mystery of the Nautilus in the US) 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
Twenty Thousand Leagues Under the Sea of underwater breathing apparatus designed by Benoit Rouquayrol and Auguste Denayrouze in 1865. They designed a diving set with a backpack spherical air tank that supplied air through the first known demand regulator. The diver still walked on the seabed and did not swim. This set was called an "aérophore" (Greek for "air-carrier"). Air pressure tanks made with the technology of the time could only hold 30 atmospheres, and the diver had to be surface supplied; the tank was for bailout. The durations of 6 to 8 hours on a tankful without external supply recorded for the Rouquayrol set in