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

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

Stack slice

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Click or tap to drop the block

How to play Stack slice

Stack slice is a timing game about building a tower. A block slides back and forth across the top of the stack. Tap or press the action key to drop it. Any part that hangs over the block below gets sliced off and lost, so the tower gets narrower with every sloppy drop. Land a block dead centre for a perfect, which keeps your width and chains into a combo that can even widen the tower back up. Miss the stack entirely and the run ends. Build as high as you can.

Tips

Aim for perfects, they keep your width and start a combo
Drop a touch early, the block keeps moving as it falls
A few perfects in a row can widen the tower back out
Find a steady rhythm instead of rushing every drop

About Stack slice

Stack slice is the deceptively simple tower builder that turns one button into a test of nerve. Every drop either trims your platform or rewards a clean hit, so the game slowly squeezes the margin for error. The perfect-chain mechanic gives skilled players a way to climb forever. Free, no download, plays in your browser.

More reflex games

Math sprint: Solve as many math problems as you can in 30 seconds.
Snake: A modern take on the classic. Don't bite your tail.
Aim trainer: Click as many targets as you can in 30 seconds.
Reaction time: How fast can you click when the screen turns green?
Whack a mole: Bonk the moles before they pop back into their holes.
Stroop test: Read the colour, ignore the word. Brain twister in 30 seconds.

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