★Pigeons can recognize themselves in a mirror.★The fear of long words is ironically called hippopotomonstrosesquippedaliophobia.★A hippo's sweat is pink.★So far, two diseases have successfully been eradicated: smallpox and rinderpest.★A blue whale's tongue can weigh as much as an elephant.★Antarctica is the only continent without native reptiles or snakes.★Google processes more than 8.5 billion searches every single day.★A mosquito has 47 teeth.★Your tongue print is as unique as your fingerprint.★A group of frogs is called an army.★A blue whale's heart is roughly the size of a small car.★29th May is officially Put a Pillow on Your Fridge Day.★A group of crows mobbing a predator is literally called a 'murder patrol'.★The longest recorded flight of a chicken lasted 13 seconds.★Pigs can't look up at the sky without rolling over.★A snail can have up to 25,000 teeth on its tongue.★Butterflies taste with their feet.★Octopuses have three hearts and blue blood.★A group of flamingos is called a 'flamboyance'.★The 'new car smell' is made of dozens of chemicals off-gassing from the interior.★Scotland's national animal is the unicorn.★Honey never spoils. Archaeologists found 3000-year-old honey in Egyptian tombs that was still edible.★Your stomach gets a new lining every 3 to 4 days, otherwise it would digest itself.★A newborn panda is smaller than a mouse.★A shrimp's heart is located in its head.★Sea cucumbers breathe through their butts.★Tigers have striped skin, not just striped fur.★The Statue of Liberty was originally intended to be a lighthouse.★Dolphins have names for each other.★A rhinoceros' horn is made of keratin, the same stuff as hair.★Bubble wrap was originally invented as wallpaper.★Hippos can't actually swim, they walk along the riverbed.★The average person spends six months of their life waiting for red lights to turn green.★An octopus has nine brains.★Polar bears have black skin under their white fur.★The human brain uses about 20% of the body's total energy.★We have mapped more of Mars than of our own ocean floor.★Ketchup was once sold as medicine in the 1830s.★A day on Mercury lasts 59 Earth days.★The average person walks the equivalent of three times around the world in a lifetime.★Vincent van Gogh only sold one painting during his lifetime.★A group of porcupines is called a prickle.★The world's oldest known recipe is for beer.★The first computer mouse was made of wood.★Cherophobia is an irrational fear of fun or happiness.★A crocodile can't stick its tongue out.★Horses physically cannot vomit.★The smell of freshly cut grass is actually a plant distress signal.★Ancient Egyptians slept on stone pillows.★Rats laugh when tickled.★Avocados are toxic to most animals except humans.★Nintendo was founded in 1889 as a playing card company.★You can hear a blue whale's heartbeat from more than two miles away.★The first oranges weren't orange, they were green.★Snakes can help predict earthquakes.★Cleopatra lived closer in time to the Moon landing than to the building of the Great Pyramid.★Humans blink about 15 to 20 times per minute.★A 'jiffy' is one trillionth of a second in physics.★There are only two countries in the world whose names start with 'The': The Gambia and The Bahamas.★There are more than 1,000 chemicals in a cup of coffee.★More than half of all people alive today have never made a phone call.★The shortest war in history lasted 38 to 45 minutes between Britain and Zanzibar.★A group of pandas is called an embarrassment.★Cows have regional accents, they moo differently in different areas.★It takes about eight minutes for sunlight to reach Earth.★The Mona Lisa has no eyebrows or eyelashes.★The Dutch were once the tallest people in the world.★There are more possible iterations of a game of chess than atoms in the observable universe.★Pteronophobia is the fear of being tickled by feathers.★It is physically impossible to hum while holding your nose.★Cows have best friends and get stressed when separated.★A group of owls is called a parliament.★The moon has moonquakes.★Sloths only poop about once a week.★A bolt of lightning is five times hotter than the surface of the sun.★A cloud can weigh more than a million pounds.★The oldest 'your mom' joke was discovered on a 3,500 year old Babylonian tablet.★The first item ever sold on eBay was a broken laser pointer.★Dragonflies have been around for about 300 million years.★Cotton candy was co-invented by a dentist.★In Switzerland it is illegal to own just one guinea pig.★Goldfish can recognize human faces.★Bees can recognize individual human faces.★The Hawaiian alphabet has only 13 letters.★Humans share 60% of their DNA with bananas.★If you lift a kangaroo's tail off the ground it can't hop.★A hummingbird's heart can beat up to 1,260 times per minute.★Ostriches can run faster than horses.★Starfish can regenerate their lost limbs.★There is a village in Norway called 'Hell' that freezes over every winter.★Barbie's full name is Barbara Millicent Roberts.★Elephants are the only mammals that can't jump.★A day on Jupiter lasts only about 10 hours.★There's a species of jellyfish that is immortal.★Hot water freezes faster than cold water. This is called the Mpemba effect.★A flock of crows is known as a murder.★A 'moment' was medieval unit of time equal to 90 seconds.★Peanuts aren't nuts, they are legumes.★Voice actors for Mickey and Minnie Mouse got married in real life.★Koalas have fingerprints nearly identical to humans.★Sea otters hold hands while sleeping so they don't drift apart.★The microwave oven was invented by accident when a researcher noticed a chocolate bar melted in his pocket.★Cashews grow on the outside of a fruit, not inside a shell.★Dolphins sleep with one eye open.★The Eiffel Tower can grow up to 6 inches taller during summer.★Pineapples take about two years to grow.★Most 'silver' spoons are actually made of stainless steel.★A jiffy is an actual unit of time: 1/100th of a second.★The dot over the letter 'i' is called a tittle.★Crows can recognize human faces and hold grudges for years.★A group of ferrets is called a business.★Humans are the only animals that blush.★Sharks existed on Earth before trees did.★Wombat poop is cube-shaped.★Bananas are berries, but strawberries are not.★The shortest commercial flight in the world lasts just 57 seconds.★There are more stars in the universe than grains of sand on every beach on Earth.★Bananas are curved because they grow towards the sun.★A group of jellyfish is called a smack.★Chewing gum while you chop onions helps keep you from crying.★A snail can sleep for three years straight.★Your nose can remember 50,000 different scents.★Octopuses can taste with their arms.★Sloths can hold their breath longer than dolphins can.★The smell of rain has a name: petrichor.★Cats can't taste sweetness.★7% of American adults believe that chocolate milk comes from brown cows.★Banging your head against a wall for one hour burns 150 calories.★A lion's roar can be heard from up to 5 miles away.★The Great Wall of China is not visible from space with the naked eye.★A newborn kangaroo is about the size of a jellybean.★The French language has 13 different words for 'kiss'.★The inventor of the Pringles can is buried in one.★A day on Venus is longer than a year on Venus.★Saturn would float if you could find an ocean big enough.★The longest hiccuping spree lasted 68 years.

★Pigeons can recognize themselves in a mirror.★The fear of long words is ironically called hippopotomonstrosesquippedaliophobia.★A hippo's sweat is pink.★So far, two diseases have successfully been eradicated: smallpox and rinderpest.★A blue whale's tongue can weigh as much as an elephant.★Antarctica is the only continent without native reptiles or snakes.★Google processes more than 8.5 billion searches every single day.★A mosquito has 47 teeth.★Your tongue print is as unique as your fingerprint.★A group of frogs is called an army.★A blue whale's heart is roughly the size of a small car.★29th May is officially Put a Pillow on Your Fridge Day.★A group of crows mobbing a predator is literally called a 'murder patrol'.★The longest recorded flight of a chicken lasted 13 seconds.★Pigs can't look up at the sky without rolling over.★A snail can have up to 25,000 teeth on its tongue.★Butterflies taste with their feet.★Octopuses have three hearts and blue blood.★A group of flamingos is called a 'flamboyance'.★The 'new car smell' is made of dozens of chemicals off-gassing from the interior.★Scotland's national animal is the unicorn.★Honey never spoils. Archaeologists found 3000-year-old honey in Egyptian tombs that was still edible.★Your stomach gets a new lining every 3 to 4 days, otherwise it would digest itself.★A newborn panda is smaller than a mouse.★A shrimp's heart is located in its head.★Sea cucumbers breathe through their butts.★Tigers have striped skin, not just striped fur.★The Statue of Liberty was originally intended to be a lighthouse.★Dolphins have names for each other.★A rhinoceros' horn is made of keratin, the same stuff as hair.★Bubble wrap was originally invented as wallpaper.★Hippos can't actually swim, they walk along the riverbed.★The average person spends six months of their life waiting for red lights to turn green.★An octopus has nine brains.★Polar bears have black skin under their white fur.★The human brain uses about 20% of the body's total energy.★We have mapped more of Mars than of our own ocean floor.★Ketchup was once sold as medicine in the 1830s.★A day on Mercury lasts 59 Earth days.★The average person walks the equivalent of three times around the world in a lifetime.★Vincent van Gogh only sold one painting during his lifetime.★A group of porcupines is called a prickle.★The world's oldest known recipe is for beer.★The first computer mouse was made of wood.★Cherophobia is an irrational fear of fun or happiness.★A crocodile can't stick its tongue out.★Horses physically cannot vomit.★The smell of freshly cut grass is actually a plant distress signal.★Ancient Egyptians slept on stone pillows.★Rats laugh when tickled.★Avocados are toxic to most animals except humans.★Nintendo was founded in 1889 as a playing card company.★You can hear a blue whale's heartbeat from more than two miles away.★The first oranges weren't orange, they were green.★Snakes can help predict earthquakes.★Cleopatra lived closer in time to the Moon landing than to the building of the Great Pyramid.★Humans blink about 15 to 20 times per minute.★A 'jiffy' is one trillionth of a second in physics.★There are only two countries in the world whose names start with 'The': The Gambia and The Bahamas.★There are more than 1,000 chemicals in a cup of coffee.★More than half of all people alive today have never made a phone call.★The shortest war in history lasted 38 to 45 minutes between Britain and Zanzibar.★A group of pandas is called an embarrassment.★Cows have regional accents, they moo differently in different areas.★It takes about eight minutes for sunlight to reach Earth.★The Mona Lisa has no eyebrows or eyelashes.★The Dutch were once the tallest people in the world.★There are more possible iterations of a game of chess than atoms in the observable universe.★Pteronophobia is the fear of being tickled by feathers.★It is physically impossible to hum while holding your nose.★Cows have best friends and get stressed when separated.★A group of owls is called a parliament.★The moon has moonquakes.★Sloths only poop about once a week.★A bolt of lightning is five times hotter than the surface of the sun.★A cloud can weigh more than a million pounds.★The oldest 'your mom' joke was discovered on a 3,500 year old Babylonian tablet.★The first item ever sold on eBay was a broken laser pointer.★Dragonflies have been around for about 300 million years.★Cotton candy was co-invented by a dentist.★In Switzerland it is illegal to own just one guinea pig.★Goldfish can recognize human faces.★Bees can recognize individual human faces.★The Hawaiian alphabet has only 13 letters.★Humans share 60% of their DNA with bananas.★If you lift a kangaroo's tail off the ground it can't hop.★A hummingbird's heart can beat up to 1,260 times per minute.★Ostriches can run faster than horses.★Starfish can regenerate their lost limbs.★There is a village in Norway called 'Hell' that freezes over every winter.★Barbie's full name is Barbara Millicent Roberts.★Elephants are the only mammals that can't jump.★A day on Jupiter lasts only about 10 hours.★There's a species of jellyfish that is immortal.★Hot water freezes faster than cold water. This is called the Mpemba effect.★A flock of crows is known as a murder.★A 'moment' was medieval unit of time equal to 90 seconds.★Peanuts aren't nuts, they are legumes.★Voice actors for Mickey and Minnie Mouse got married in real life.★Koalas have fingerprints nearly identical to humans.★Sea otters hold hands while sleeping so they don't drift apart.★The microwave oven was invented by accident when a researcher noticed a chocolate bar melted in his pocket.★Cashews grow on the outside of a fruit, not inside a shell.★Dolphins sleep with one eye open.★The Eiffel Tower can grow up to 6 inches taller during summer.★Pineapples take about two years to grow.★Most 'silver' spoons are actually made of stainless steel.★A jiffy is an actual unit of time: 1/100th of a second.★The dot over the letter 'i' is called a tittle.★Crows can recognize human faces and hold grudges for years.★A group of ferrets is called a business.★Humans are the only animals that blush.★Sharks existed on Earth before trees did.★Wombat poop is cube-shaped.★Bananas are berries, but strawberries are not.★The shortest commercial flight in the world lasts just 57 seconds.★There are more stars in the universe than grains of sand on every beach on Earth.★Bananas are curved because they grow towards the sun.★A group of jellyfish is called a smack.★Chewing gum while you chop onions helps keep you from crying.★A snail can sleep for three years straight.★Your nose can remember 50,000 different scents.★Octopuses can taste with their arms.★Sloths can hold their breath longer than dolphins can.★The smell of rain has a name: petrichor.★Cats can't taste sweetness.★7% of American adults believe that chocolate milk comes from brown cows.★Banging your head against a wall for one hour burns 150 calories.★A lion's roar can be heard from up to 5 miles away.★The Great Wall of China is not visible from space with the naked eye.★A newborn kangaroo is about the size of a jellybean.★The French language has 13 different words for 'kiss'.★The inventor of the Pringles can is buried in one.★A day on Venus is longer than a year on Venus.★Saturn would float if you could find an ocean big enough.★The longest hiccuping spree lasted 68 years.

Mystery sound

Score

0/10

Streak

0

Best

0

How to play Mystery sound

Every round shows you a sound written out, like KRRNCH... krnch... pause... krnch, plus a short description such as crunchy, hollow, followed by regret. Four possible sources are listed and only one is right. Read the sound, hear it in your head, and pick what made it. After each guess a short explanation reveals the deciding clue. Ten sounds per run, with score, streak and an ear rank at the end. No speakers required, everything happens in your imagination.

Tips

Read the sound out loud, your mouth knows things your eyes miss
The description usually contains the deciding detail
Pay attention to pauses, endings and anything described as smug
Two options often sound plausible, the explanation tells you why one wins

About Mystery sound

Sound effects in comics and books have always been a tiny art form. A good written sound can put a noise in your head more precisely than a recording. Mystery sound turns that trick into a guessing game. Each round serves a lovingly transcribed noise from everyday life: the tactical silence of a mosquito, the smug beep of a finished washing machine, the lonely roll of a skateboard continuing without its rider. Your job is to match the transcription to its source. It sounds easy until two options both feel right and you are whispering fwap fwap fwap to yourself in public. Ten rounds, no audio, all imagination.

More trivia games

Who said what?: A quote, four suspects, sixty seconds. Guess who said it.
Country guess: Guess today's mystery country. Each wrong guess tells you how far away you were and in which direction. Six tries.
Higher or lower: Is the next one higher or lower? Guess and build your streak across cities, animals, countries and more.
Daily trivia: Ten questions per day across geography, science, history and pop culture. Can you score 10/10?
Fake or fact: Five quick rounds per day. Read two statements and spot the false one.
One minute detective: Read the clues, pick the culprit. A new mystery every day or endless random cases.

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