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

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

Odd one out

Score

0/10

Streak

0

How to play Odd one out

Four items appear on screen. Three belong together, one does not. Tap the odd one out. After you answer, the game explains the connection. Daily mode serves one puzzle per day. Endless mode keeps serving random puzzles so you can build a best streak.

Tips

Look for category first: animals, countries, tools, foods
The odd one might differ by habitat, era or function, not just spelling
Read the explanation even when you get it right, the link is often clever
Endless mode tracks your best streak across sessions

About Odd one out

Odd one out is a classic reasoning warm-up: four tiles, one misfit. Categories span nature, geography, pop culture and wordplay. Explanations teach you why the grouping works, so wrong guesses still feel worthwhile.

More logic games

2048: Slide tiles to combine them. Reach 2048 or beyond.
Memory: Find every matching pair. Easy on the brain, hard to put down.
Sudoku mini: A quick 6x6 sudoku you can finish on a coffee break.
Drop four: Stack four discs in a row. Beat the friendly bot.
Reversi: Flip your way to a bigger army. Othello against an AI.
Lights out: Turn off every light in the 5x5 grid. Trickier than it looks.

Browse the full arcade →

00:00Warming up

0Pixels scrolled

0.0cmMouse odyssey

0Clicks made

0.00Calories burned

Got feedback or a site to suggest?

Spotted a broken link, found a hidden gem, or have an idea? We'd love to hear from you.