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

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

Synth grid

BPM

120

Bank

A

1

·

·

·

2

·

·

·

3

·

·

·

4

·

·

·

Kick

Snare

Hat

E5

D5

C5

A4

G4

E4

D4

C4

STEP—

120

Banks

BPM120

Volume50%

Swing0%

Scale

Wave

Presets

How to play Synth grid

Tap cells in the grid to add or remove notes. Each row is a different pitch and each column is a beat. Press play to start the loop. Adjust tempo, volume, and the wave shape. Layer different rows for chords. Tap clear to wipe the pattern. The loop runs until you stop it. Save your beat as a short audio file.

Tips

Start with a kick on every fourth beat, then build around it
Three notes a chord, do not stack everything
Use the same scale across rows, no random pitches
Slow tempo at first, speed up once the loop sounds right

About Synth grid

Step sequencers come from the early days of electronic music. The EMS Synthi 100 in 1971 had a giant patch grid. Roland's TR 808 drum machine in 1980 took the same idea, sixteen buttons in a row, and turned it into the heartbeat of hip hop, techno and pop music. Our pocket version is a starting point. Sixteen steps, a few rows, web audio. Drop a beat in two minutes and share the loop with a friend.

More sandbox games

Critter cuddler: Pat puppies, kittens & friends. Build a tiny critter empire.
Liquid lab: Sandbox of glowing fluid. Bend gravity, light & color, splash with your finger.
Pixel painter: A tiny pixel canvas. Paint, save, screenshot, share with friends.
Game of life: Conway's classic cellular automaton. Watch patterns evolve.
Sand sandbox: Drop sand, water and stone. Watch it pile and flow.
Spirograph: Draw glowing roulette curves. Save your art as a PNG.

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.