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Free Mysteries quiz: 72 trivia questions and answers — Bermuda, Roswell & Loch Ness. Easy to hard, with explained answers. No sign-up.
Start this quiz →🖨️ Printable version (20 questions + answers)
Flying saucers, lake monsters, lost treasures, undecipherable manuscripts and unexplained disappearances: this quiz revisits history's greatest enigmas and reveals what investigations and science eventually uncovered. Some were solved in surprising ways, others still hold out. Can you tell fact from fiction?
This quiz currently has 72 questions, ranging from easy to hard, available in French, English and Spanish when the Spanish translation is available.
Warm up before the quiz with these 14 trivia questions and their explained answers: click a question to reveal the answer.
Answer: No, not at all. The area is one of the busiest in the world, swept by sudden storms and the powerful Gulf Stream: accidents do happen, but no more than elsewhere in proportion. The 'mystery' was popularised mainly by a 1974 bestseller.
Answer: The mid-air explosion of a meteoroid or comet fragment. The object exploded several kilometres up, leaving no crater, which long fuelled the wildest theories. Fortunately, the area was almost uninhabited.
Answer: Coyotes or dogs suffering from mange. Mange makes animals lose their fur and gives them thick grey skin, hence the 'monster' look. Weakened, they go for easy prey among livestock. The myth was born in Puerto Rico in 1995.
Answer: Organised Egyptian workers, fed and cared for. The builders' tombs, found near the plateau, show workers buried with honour, well fed (bread, beer, meat) and even treated for fractures. The image of slaves under the whip comes mostly… from Hollywood.
Answer: Plato. In two dialogues, the 'Timaeus' and the 'Critias', Plato describes this arrogant power punished by the gods. Most historians see it as a moral fable, not a historical account… which has not stopped thousands of books from searching for it.
Answer: The kingdom would fall. At least six ravens are always kept at the Tower, with a 'Ravenmaster' to look after them. Just in case, a wing is trimmed so they don't fly too far.
Answer: The Mary Celeste. Found off the Azores with months of supplies and the crew's belongings untouched; only the lifeboat was missing. The fate of the ten people on board has never been solved.
Answer: A squadron of 5 US Navy planes, 'Flight 19'. The five torpedo bombers, lost on a training flight, probably ran out of fuel over the ocean after a navigation error. A seaplane sent to search for them also vanished, most likely after an explosion.
Answer: The Preseli Hills in Wales, more than 200 km away. How did Neolithic people move these blocks such a distance? Sledges, logs, rafts… the debate is still open. In 2024 it was even discovered that the great 'Altar Stone' came from northern Scotland!
Answer: Oak Island. Pirate treasure, the Templars' hoard, Shakespeare's manuscripts… every theory has been tried. More than two centuries of digging, several deaths and a hit TV show later, the treasure is still missing.
Answer: The phenomenon is real, caused by billions of glowing bacteria. An area of the Indian Ocean the size of a whole country glowed faintly at night, visible from space. These bacteria are thought to multiply on algal blooms. Jules Verne already mentioned it in 'Twenty Thousand Leagues Under the Seas'!
Answer: The Piri Reis map. Historians rather see a distorted South American coastline. Piri Reis said he had compiled some twenty maps, including one by Christopher Columbus.
Answer: Fermat's Last Theorem. Pierre de Fermat claimed to have a "marvellous proof" that the margin was too narrow to contain. It took 357 years to find one.
Answer: Norway (Hessdalen). The Hessdalen lights can last over an hour. One hypothesis: ionised gases linked to the valley's minerals.
58 more questions are waiting for you in the quiz!