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

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

Tennis

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Tennis

First to 7 against the CPU, the daily rally, or a 1 vs 1 with a friend.

Daily rally: not played today

Move with ↑ ↓ or drag on mobile. Space to serve. Hit with the paddle tip for a power shot.

How to play Tennis

You control the magenta paddle on the left. Move it up and down to bounce the ball back; every return makes the ball a touch faster. Pick a mode first. In a match you play first to seven points against an easy, normal or hard CPU. In the daily rally the CPU never misses and everyone gets the same returns that day: keep the ball alive as long as you can, try as often as you like and share your longest rally. With two players, the left paddle uses W and S and the right paddle the arrow keys. Catch the ball on the tip of your paddle for a power shot, a faster and flatter return. Use the arrow keys, W and S, or drag your finger on the play area on mobile.

Tips

Power shots come off the last few pixels of the paddle, the light marks show where the tips start
Going for the tip is a gamble, aim a little too far and the ball slips past you
The easy and normal CPUs react late and drift back to the middle, wide angles beat them
The hard CPU sticks close to the ball and fires power shots back, so keep your paddle near the middle
In the daily rally a steady center hit is safer than a power shot, the CPU returns everything anyway

About Tennis

Tennis is a colorful paddle and ball arcade game: a ball, two paddles and a teal court. There are three CPU levels to work through, each ticked off on the mode screen once you beat it, from a sleepy easy CPU to a hard one that sticks to the ball and hits power shots back. The daily rally gives everyone the same pattern of returns each day, so your longest rally is a score you can compare with friends. A power shot off the paddle tip adds a bit of risk to every return. Two players can share one keyboard for a local duel.

More versus games

Drop four: Stack four discs in a row. Beat the friendly bot.
Reversi: Flip your way to a bigger army. Othello against an AI.
Tic-tac-toe: Classic noughts and crosses against the computer or a friend, plus a tricky Ultimate mode.
Duo gunners: Two-player co-op run and gun. Blast through the waves with a friend and take down the boss.
Pixel duel: A two-player versus fighter. Punch, kick, block and fireball your way through a best of three.
Twin fists: A two-player co-op brawler. Clear waves of thugs from both sides and beat the boss together.

Browse the full arcade →

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