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

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

Wobble tower

Height

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Best

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Click or tap to release the block

How to play Wobble tower

Wobble tower is a physics stacking game. A crane swings a block back and forth above your tower. Tap or press the action key to release it, and the block falls and lands with real physics, so it can slide, tip and wobble. Drop each new block so it balances on the ones below. The taller you build, the more the tower sways, and gusts of wind push it around too. If the tower topples or a block falls off, the run ends. See how many metres you can climb.

Tips

Drop blocks centred, an off-balance block makes the whole tower lean
Wait for the swing to slow at the edges before you release
Let the tower settle after a wobble before adding the next block
Build a wide, steady base, height comes later

About Wobble tower

Wobble tower swaps clean arcade stacking for messy, satisfying physics. Nothing snaps into place, so every block you drop has to actually balance, and the wind makes a tall tower feel genuinely fragile. It is equal parts construction and nerve. Free, no download, plays in your browser.

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Stroop test: Read the colour, ignore the word. Brain twister in 30 seconds.

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