Where Casino Games Came From: Roulette, Blackjack and Baccarat
Excerpt: A tuxedo, a wheel and a hundred years of argument about whether any of it can be beaten. The classics on every casino floor arrived by stranger routes than their green baize suggests.
Sloths have been doing the same thing since the Eocene, which makes them oddly appropriate hosts for a history lesson. The games on a modern casino floor are younger than that but older than most people assume, and several of them reached their current form through accidents rather than design. At Slothilton the classics are worth knowing by their origins.
The Wheel That Started as a Physics Problem
Roulette's ancestor was not designed for gambling at all. In the seventeenth century Blaise Pascal was working on a perpetual motion machine and produced a spinning wheel that, predictably, failed at its intended purpose. What it did well was generate outcomes nobody could anticipate, and by the late eighteenth century Parisian gaming houses had built a betting layout around it.
The single most consequential change came later. Early wheels carried both a zero and a double zero. In the 1840s the Blanc brothers removed one of them, halving the house edge and turning single-zero roulette into the version that spread across Europe. Both layouts survive today, which is why the same game can carry roughly 2.7% or roughly 5.26% depending only on which wheel you sit at.
“The sloth has been doing the same thing for sixty-four million years. Some designs simply do not need revising.”
From Vingt-et-Un to Blackjack
Blackjack arrived in Europe as vingt-et-un — twenty-one — and travelled to North America with French colonists. The name we use now comes from a promotional gimmick: American houses offering a bonus payout for a hand combining the ace of spades with a black jack. The bonus disappeared; the name did not.
It is also the game that produced the modern idea that casino games can be studied. In 1962 Edward Thorp published a mathematical treatment of the deck that demonstrated the edge could, under specific conditions, be moved. Casinos responded with multiple decks and continuous shuffling, and the argument has continued ever since.
Four Centuries on One Floor
| Game | Emerges | What changed it most |
|---|---|---|
| Baccarat | Italy and France, 15th–16th century | Adoption by French nobility, then by high-limit rooms worldwide |
| Blackjack | France, 17th–18th century | Thorp's 1962 analysis, answered with multi-deck shoes |
| Roulette | France, 18th century | Removal of the double zero in the 1840s |
| Slot machines | United States, 1890s | The move from mechanical reels to software in the 1970s–80s |
The slot machine is the youngest of the four and the one that changed most. Charles Fey's mechanical Liberty Bell had three reels because three was what the mechanism could turn. Once outcomes moved into software, reel count stopped being an engineering constraint and became a design choice — which is how the same cabinet layout now hosts everything from three symbols to a hundred thousand ways to win.
Frequently Asked Questions
Why do European and American roulette have different odds?
Because of a single pocket. European wheels carry one zero and American wheels carry two, which roughly doubles the house edge from about 2.7% to about 5.26%. The bets, the payouts and the table layout otherwise look the same, so the wheel is the only thing worth checking.
Who invented the roulette wheel?
The design descends from a spinning wheel built by Blaise Pascal in the 1600s while he was attempting a perpetual motion machine. It was never intended for gambling; Parisian gaming houses added the betting layout roughly a century later.
Why is blackjack called blackjack?
From an American promotional payout that rewarded a hand made of the ace of spades and a black jack. The special payout was withdrawn long ago, but the name stayed attached to the game that Europe still knew as vingt-et-un.
The odds these games carry today are the direct product of the choices above — which is why house edge and RTP are worth reading before choosing a table. For the full histories, roulette and blackjack both have detailed references.