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

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

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.

Browse the full arcade →

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