Facts You May Not Know About Roulette

FRoulette is one of the oldest casino games still played today. Whether you’re familiar with the wheel or just getting started, there’s more going on beneath the surface than most people realise. If you’re looking to place your bets on live Roulette, here are some things worth knowing about the game first.

It started as a physics experiment

The Roulette wheel wasn’t designed for gaming. French mathematician Blaise Pascal created a primitive version of it in the 17th century while trying to build a perpetual motion machine, a device that could run indefinitely without an energy source. The experiment failed, but the spinning wheel eventually found its way into Parisian gaming houses in the late 1700s, and the game has remained largely unchanged since.

The numbers add up to 666

Add together every number on a standard Roulette wheel, one through 36, and the total is 666. This has earned the game the nickname “the devil’s wheel” in some circles. It’s a mathematical coincidence rather than anything by design, but it’s stuck around as one of the more memorable Roulette facts.

The number order isn’t random

At first glance, the numbers around the wheel look scattered. They’re not in order, but they’re not arbitrary either. The layout is deliberately designed to distribute high and low numbers, odd and even numbers, and red and black pockets as evenly as possible around the wheel. This balance is built to make outcomes harder to predict and to prevent any one section of the wheel from being statistically weighted.

The zero is what gives the house its edge

In European Roulette, there are 37 pockets: numbers one to 36, plus a single zero. That zero is the house edge. If there were only 36 numbers, the payout on a straight bet — 35 to one — would mean the house broke even over time. The zero tips the balance, giving the house a 2.7% advantage on every spin.

American Roulette adds a second green pocket, the double zero. That raises the house edge to 5.26%, which is why European Roulette is more commonly played in the UK.

French Roulette has two rules the others don’t

French Roulette uses the same single-zero wheel as the European version but includes two additional rules. La Partage returns half of an even-money bet if the ball lands on zero. En Prison keeps the bet on the table for the next spin instead. Both rules reduce the house edge on even-money bets to 1.35%, making French Roulette the version with the lowest house edge of the three.

The green zero pockets weren’t always green

When Roulette wheels appeared in Paris in the late 18th century, the single zero was marked in red and the double zero in black. Once the game spread and those colours created confusion with the numbered pockets, green was introduced for the zeros — and it’s been that way ever since.

Live Roulette uses a real wheel

In live Roulette online, the wheel, ball, and dealer are all physical. Optical character recognition software reads the result as the ball settles and updates the digital interface in real time. The outcome is determined by the wheel, not by a random number generator, which is what separates live Roulette from standard online versions of the game.