Most people assume tic tac toe has always been called tic tac toe. It hasn't. The name has a genuinely odd history — it was borrowed from a completely different game, passed through several countries, and changed spelling multiple times before landing on the version we use today.

Here's the full story.

It started as a different game entirely

The name "tic tac toe" originally had nothing to do with Xs and Os. It referred to a Victorian parlour game where players would close their eyes and toss a pencil onto a slate covered in numbers, scoring points based on whichever number the pencil landed on. Think of it like blind darts with a pencil.

The name itself was onomatopoeia — "ticktack" was the sound the pencil made when it struck the slate. The Random House Dictionary traces "ticktack" as a word meaning the repetitive clicking or tapping sound made by a small object hitting a surface.

This pencil-and-slate game dates to the mid to late 1800s and was popular enough that the name stuck in common use — even after the game itself disappeared.

How the name jumped to the wrong game

Somewhere in the late 19th century, the name migrated. The pencil game faded from popularity but the name "tic tac toe" was already embedded in everyday language. When Americans needed a name for the X and O grid game — which the British called "noughts and crosses" — they reached for the familiar phrase.

The earliest known reference to the grid game in print appears in the American publication The Academician in May 1818, where it is listed alongside other children's games as "tit-tat-to." The British English Journal of Education first mentions "noughts and crosses" in 1843. By the early 20th century the modern spelling "tic tac toe" had settled in the United States while Britain stuck firmly with "noughts and crosses."

The many names of the same game

Depending on where you grew up, you probably know it by a completely different name:

The British name "noughts and crosses" is arguably more descriptive — nought being another word for zero, so the name literally describes the two symbols used. "Tic tac toe" by contrast describes the sound of a pencil hitting a slate in a completely different game. Language is strange.

Why "tit tat toe"?

You'll sometimes see older references to "tit tat toe" which looks like a typo but isn't. In an 1858 British scholarly journal called Notes and Queries, a writer described the game as having been called "tit-tat-toe" in their school days, with those being "the formular words of victory" — essentially a chant said when winning, similar to how "checkmate" works in chess.

The exact phrase "tit tat toe, three in a row" was a victory call, and the game eventually inherited its own winning chant as its name. This version of the name is older than the American "tic tac toe" and gives a slightly different explanation for where the sounds came from — not a pencil on slate but a rhythmic chant of triumph.

So which explanation is correct?

Honestly — both have evidence behind them and historians still debate it. The onomatopoeia theory (pencil on slate) and the victory chant theory both hold up. What's clear is that the name evolved gradually through everyday use rather than being invented by anyone in particular. It drifted from Britain to America, changed spelling along the way, and attached itself to a game it wasn't originally named for.

The game itself is far older than any of its names — Terni Lapilli, the Roman ancestor of tic tac toe, was being scratched into the steps of the Colosseum around 100 BC, roughly 2,000 years before anyone called it anything resembling "tic tac toe."

The name is young. The game is ancient.

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