Roulette is one of the oldest and most iconic casino games. Its elegant design and unpredictable spins have fascinated players for centuries. But beyond the game itself, there are many little-known curiosities about roulette.
Today I bring you a collection of fascinating facts that will make you see roulette in a whole new light.
1. The sum of all roulette number is…666!
Yes, you read that right. If you add up all the numbers on the roulette wheel from 0 to 36, the total is 666, also known as the “number of the beast.” This has sparked countless myths and conspiracy theories about roulette being the “devil’s game.”
Coincidence or historical wink? What’s certain is that this fact has fueled the game’s mystical aura for generations.
2. An accidental invention by a mathematician.
The inventor of modern roulette was the french mathematician and physicist Blaise Pascal, in the 17th century. He was trying to build a perpetual motion machine but ended up creating what later became the prototype of the roulette game.
3. European roulette vs. american roulette.
Although they may look the same at first glance, there’s a key difference: american roulette has two zeros (0 and 00) and europeanroulette has just one zero (0). This increases the house edge in the American version:
- House edge in european roulette: 2.70%
- House edge in american roulette: 5.26%
🔍 Tip: If you have the choice, always play european roulette. The odds are slightly more in your favor.
4. Beating roulette with physics.
In the 1970s, a group of MIT students used synchronized watches and physics calculations to predict where the ball would land on certain defective wheels. They won millions until casinos discovered their method.
Nowadays, this is virtually impossible thanks to modern surveillance, electronic roulette RNGs, and strict security checks.
5. The most famous bet: all on red.
The record for the biggest win in a single roulette spin belongs to Ashley Revell, an Englishman who, in 2004, sold all his possessions and bet his entire bankroll of $135,300 on red… and won!
Since then, his story has been featured in multiple documentaries and TV programs. You can read more about him in this CBS News article.
6. Why is the roulette table green?
One of roulette’s most striking features is the deep green color of the table layout. Is it just aesthetic, or is there a deeper reason?
In the early casinos, table cloths were handmade with natural dyes. Green was one of the most durable and affordable options, making it ideal for heavy-use gaming tables. Its resistance to wear and tear made it a logical choice that later became standardized.
There’s also an aesthetic and psychological factor: green is considered a neutral, elegant color that doesn’t strain the eyes. Plus, it provides strong contrast with the black and red numbers, making the game easier to follow visually.

Roulette is not only one of the most iconic casino games but also a universe full of history, mathematics, culture, and visual secrets.