Sudoku was originally called 'Number Place'

Tetris was launched in the US at Summer CES 1988

Tetris first appeared in the US at the 1988 Summer CES, where Henk Rogers—who would later publish and market the game—first encountered it. This interview revisits that moment, with creator Alexey Pajitnov and Rogers reflecting on how the game gained global recognition.

Most of the ‘Super Mario Bros.’ sequel was borrowed from a preexisting Nintendo game

Nintendo was eager to create a sequel following the success of “Super Mario Bros.,” but the original “Super Mario Bros. 2,” released in Japan, proved too difficult. Crunched for time, the company used the bones of a preexisting game, “Doki Doki Panic,” and inserted elements from Mario’s world for the US release of “Super Mario Bros. 2,” making for a follow-up that was drastically different from its predecessor.

Clue, the murder-mystery board game, was designed during World War II air raids.

The card game Uno was invented by an Ohio barber

Merle Robbins created the game in 1971 after an argument with his son about the rules of the card game Crazy Eights. The discussion led to the creation of his own game, which he then went on to sell from his barbershop.

'Shogun,' a 1980s TV series, helped popularize sushi in the US by stimulating an American interest in Japanese culture.

The Juke 8 was the world's first karaoke machine

Daisuke Inoue invented the machine in 1971 by combining an amplifier, microphone, and 8-track machine, though he never patented it and, as a result, never collected royalties from the billion-dollar industry.

Ancient Egyptians played Senet, a board game where players threw sticks or bones as dice.

The origin of the sport's name is disputed

How pickleball got its name has been a point of contention for decades. The McCallums claim the family dog, Pickles, used to snatch the balls as they played and named it for him. Joan Pritchard, though, says Pickles didn’t join the family until after the game was invented.

The rice in sushi wasn't originally intended to be eaten

In Southeast Asia in the third century, rice, mixed with salt, was used to preserve fish for several months. The rice was considered too salty to eat and was often thrown away, though adventurous eaters, over time, began eating the rice. In 16th-century Japan, rice was often mixed with vinegar rather than salt, a practice that eventually led to the modern version of sushi. “Sushi” roughly translates to “vinegared rice.”

QR codes were developed in Japan in 1994 to fix bar code limitations

These codes store more data than traditional barcodes—up to 1,850 uppercase characters—and can be quickly scanned from any angle thanks to visual indicators like green squares and zebra-striped lines communicating orientation.

Japan train station names cat stationmaster

The 1987 Nintendo video game 'Stadium Events' isn't known for being particularly fun, but its scarcity has made it a highly sought-after item that has sold for up to $35K at auction.

Dr. Seuss was likely the first to use the word 'nerd' in print

The word appeared in 1950's "If I Ran the Zoo," but there are theories that the word (or forms of it) were already part of popular slang before the book was published.

The first ‘Harry Potter’ book was retitled for US readers

Scholastic changed "Harry Potter and the Philosopher’s Stone" to "Sorcerer’s Stone" in 1998, fearing the original title sounded too academic and might confuse American readers unfamiliar with the word’s magical meaning.

View an illustrated history of Microsoft Solitaire

Included in Windows 3.0 in 1990, to help first-time computer users become familiar with using a mouse, the game featured a dozen unique card back designs. The Windows XP library of preinstalled games added Spider Solitaire, which became the most-played game on Windows PCs by 2005.

The term 'algorithm' originated from the Latinized name of al-Khwārizmī, a 9th-century mathematician whose works introduced Arabic numerals and the decimal-based numeral system to Europe and whose treatise 'Al-Jabr' gave algebra its name.

The term 'algorithm' originated from the Latinized name of al-Khwārizmī, a 9th-century mathematician whose works introduced Arabic numerals and the decimal-based numeral system to Europe and whose treatise 'Al-Jabr' gave algebra its name.

The Depression-era Social Security program assigned every US citizen an account number

Many of the Social Security functions we know today are the result of multiple amendments to the Social Security Act that have been passed in the years since the act’s initial creation in 1935. As Social Security as we know it today was being conceptualized, Democrats opted to make it an insurance program rather than a welfare one to assuage Republicans.

There are more chess game variations than observable atoms in the universe

Mathematician Claude Shannon estimated there are 10 to the 120th power variations of chess games possible. Known as the "Shannon number," this is more than the estimated number of atoms in the cosmos.

A New Mexican town named itself after the quiz show 'Truth or Consequences'

If you've ever driven through southern New Mexico, you might've been struck by one particular town name: Truth or Consequences. Originally called Hot Springs, the town was renamed after the popular game show in 1950, which offered to broadcast from the first town to change its name to match the show's. Although the town originally planned on changing it back, the name stuck.

Japan's wrestling style is called puroresu

Puroresu has a long history in Japan, much of it traced back to Mitsuhiro Momota, better known as Rikidozan, who was the form’s first superstar and a hero to the country in the wake of World War II.

Interred Japanese Americans wrote satirical poetry

Senryu is a Japanese poetic form that is similar to the haiku, though its aim is often satirical and its composition is often collaborative. At California’s Tule Lake Segregation Center, interred citizens met to write senryu together, often composing verse that criticized their surroundings.

Ned Nye instilled an interest in timekeeping and sundials in Bill Nye

While a prisoner of war for four years during World War II, the Japanese military confiscated Ned's watch, so he built sundials to keep track of time. Ned would later research and write a book on sundials and be honored with a lifetime membership to the North American Sundial Society.

Snowboarding was first included in the Olympics in 1998

Snowboarding entered the Winter Olympics in 1998 in Nagano, Japan, featuring giant slalom and halfpipe events—a move influenced by the sport’s rapid growth and mainstream exposure through competitions like the X Games.

View the codenames given to Linux kernel releases, from 'Woozy Numbat' to 'ninja sloth'

While each version is assigned a code, such as 6.8.0-rc7, animal codenames provide more memorable, fun identities for each version. Some Linux distributions have also adopted this philosophy and have used alliterative nicknames to convey the distro's characteristics, such as Ubuntu's "Warty Warthog," described as "functional if not pretty."

Temu was born out of a Chinese company that, at the time, was called Pinduoduo

Today, the company is called PDD Holdings, and owns both Temu and its very similar sister app in China, Pinduoduo.

Classifying the 'first novel' is tricky

The question of what counts as the "first novel" doesn't have a simple answer. This explainer looks at early contenders—from ancient Roman satire to Japan's "Tale of Genji"—and how different cultures shaped the rise of long-form fiction.

Figuring out how to get a sofa around a corner has been a math problem since 1966

A sofa with the largest possible area that can make a 90-degree turn is known as Gerver's sofa, named after the mathematician who determined the shape in 1992. In 2025, a 119-page paper provided the proof confirming this shape.

The word 'jazz' evolved from 'jasm,' 19th-century American slang for 'energy'

Search a massive database of over 4 decades of clues from the TV quiz show 'Jeopardy!'

Clever Hans was a 1900s horse that was believed to be able to solve math equations, tell time, and read and comprehend German, until a psychology student discovered how he got his answers.

The hormonal disorder PCOS was renamed PMOS in 2026, a move designed to improve care and research by shifting the focus to the hormonal causes of this condition that affects 1 in 8 women.

In its famous catalog, Sears sold $600 DIY house kits from 1908 through the 1940s, resulting in an estimated 100,000 'Sears and Roebuck homes.'

Elk Cloner, the first computer virus to spread in public, was written as a practical joke by Richard Skrenta, a Pittsburgh high school student.

Ebola species have historically been named after where they were discovered, stigmatizing residents who live there, including Bundibugyo, in Uganda.

The idea for the Federal Reserve was conceived in secret in 1910—with bankers donning duck hunt gear for disguise while traveling to a remote country club on Georgia's Jekyll Island

Some coin denominations have ridges etched on their sides, partly to prevent counterfeiting, in a practice called 'reeding.'

Graffiti dates back to at least ancient Pompeii, where citizens scrawled messages to one another on public walls

Mid-century modern graphic designers, known for their bright colors and bold lines in advertising, also found success with children's books.

The first robot in literature may have been a 'mechanical man' in 1907's 'Ozma of Oz,' a book in L Frank Baum's 'Wizard of Oz' series.

Sony set the standard for cylinder-shaped batteries when it repurposed manufacturing equipment used to make rolls of magnetic recording tape.

Explore an interactive map built from more than 100,000 survey responses on where people find joy in their lives

Play the role of a student in a game where you try to navigate college and remain debt-free, selecting different income levels, high school experience, race, ethnicity, and more.

For centuries, it was common to sleep in two shifts: a few hours at the beginning of the night, and a longer period beginning around midnight

Existentialist writer Jean-Paul Sartre coined the famous phrase 'Hell is—other people' in his play 'No Exit'

The Great Salt Lake's distinct dual coloration results from high-salinity organisms that only live in the northern portion and produce a purple protein.

Sunflowers have long been a symbol of nuclear disarmament because they can extract large amounts of radioactive cesium from soil.

Before humans, the Soviet Union and the United States sent animals—including apes, dogs, and cats—to space during the Space Race.

Gerrymandering works through two techniques: cracking opposing voters across districts to dilute their power, and packing them into a few to waste their votes in lopsided majorities.

The syncytiotrophoblast is the outer layer of the placenta and the largest human cell, spanning an area about twice that of a king-sized bedsheet.