Online roulette is a casino game where a small ball is dropped into a spinning wheel, which has 36 colored and numbered compartments. Players place bets on where they think the ball will stop, winning if they guessed correctly. In 2018, there are hundreds of versions of online roulette available for all US players to enjoy. Roulette is a game of chance in which the dealer rotates the roulette wheel. A small metallic ball is then released into the wheel and will spin until losing momentum and landing in a certain pocket. The designated pockets on a roulette wheel can either be red, black or green (the zero pocket) and contain odd or even numbers.

The aim of the game is for a player to make a prediction as to where the ball will land. You can either wager on a number directly, on a color (red or black) on a group value (odd or even) and more. There are a number of variants of the popular casino game, but specifically, online roulette can be split into three distinct categories: French Roulette, American Roulette and European Roulette. There are even versions of live dealer online Roulette that players can enjoy from home. We shall divulge all you need to know as a roulette player below, so read on for more!

Image of online roulette wheel in black and white America


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Humble Perpetual Motion Beginnings

Online Roulette actually kicked off its journey as a failed experiment in 1655. French Physicist, Blaise Pascal, was in pursuit of creating a perpetual motion machine. Unfortunately for Pascal – but to the advantage of millions of gamblers – his invention failed, and instead was repurposed in a completely different light. The roulette wheel was officially invented in 1655, and from there, the game that we know and love began to grow.

And Then There Was Zero

Up until the mid-19th century, the roulette wheel was played with no use of the zero. This gave gamblers a huge advantage against the house, giving them more of a chance to win. However, this dream came to a halt in 1842 at the hands of brothers Francois and Louis Blanc. The pair designed a roulette wheel which incorporated a singular zero, changing the face of the game for good.

American Influence on the Roulette Wheel

In the 1800s, the Roulette wheel made its way to our beloved shores of America and quickly became our own. By 1886, the roulette wheel had gained the additional 00 pocket, still found on roulette wheels today in the American version of the popular casino game. Back then, however, there was an additional symbol of an eagle which frequented the board. The eagle may have fallen away through the years, but the double zero still remains.

Roulette Through the 19th Century

The 19th century marked the years which roulette truly began to flourish. Across both Europe and America, the casino game quickly began to grow in popularity. In the 1860s, gambling ads had been eradicated throughout most of Europe and as such, the Blanc family moved to the last remaining gambling mecca. The family relocated to Monte Carlo, opening an elite gambling club for well to-do Europeans. Housing their roulette wheel, the game quickly grew in popularity, even being shipped to America due to the lower house edge.

From here on out, the game began to grow in popularity throughout the ages. The first online casinos began to surface in 1994 and it wasn’t long until the online bug bit all gambling software developers. Online roulette is a popular staple amidst the gambling community – both in the USA and internationally. Now with mobile versions of the game available on smart devices, there is nothing stopping you from playing anywhere, any time.

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European Roulette is a wildly popular version of online roulette. This is due to the fact that European roulette offers players a lower house edge than American roulette. The key difference between an American roulette game and the European version is the fact that the US game has an additional zero. This means in European online Roulette you have 36 numbers to wager on where as the more house friendly American version gives you 37.

Payouts on singular number bets in European roulette are a whopping 35:1, so should you have luck on your side and manage to land the number, you will be smiling all the way to the cashier.

Image of European Roulette Table USA


This is the true unicorn of the roulette family. French roulette – although being very similar to European roulette in many ways – offers an even lower house edge for players to take advantage of. This is therefore why players flock to this table above the other two variants. There is one major rule which sets the French table apart from the other two versions of roulette; La Partage.

La Partage is a practice of French online roulette in which if the player has made a wager on an outside bet (odds or evens, red or black or any other particular bet with a 1:1 payout) and the ball lands on zero, half of your bet will be returned to you.

Image of French Roulette Wheel America


As we have now established, the American Roulette table is the hardest nut to crack with regards to winning. The additional double zero pocket gives the house a greater edge against you as a player, making it trickier to win. This version of online roulette is however still a riveting game for all to enjoy so don’t be disheartened. Furthermore, if you find that the US wheel just does not turn in your favor, most real money online casinos will offer you European versions to enjoy!

Image of American Roulette Wheel


To further solidify the difference presented by the various roulette wheels, the Casino US team has compiled a simple odds table so read on to see your chances against the wheel. (Please note these odds are for European vs. American Wheels)

Name of Roulette Bet Type of Roulette Wager European Probability
Percentile to Win
American Probability
Percentile to Win
1 – 18 Outside Bet 48.65% 47.37% 1:1
19 – 36 Outside Bet 48.65% 47.37% 1:1
Red or Black Outside Bet 48.65% 47.37% 1:1
Odds or Evens Outside Bet 48.65% 47.37% 1:1
Dozen Bet Outside Bet 32.43% 31.58% 2:1
Column Bet Outside Bet 32.43% 31.58% 2:1
Straight bet Inside Bet 2.70% 2.63% 35:1
Split Bet Inside Bet 5.41% 5.26% 17:1
Street Bet Inside Bet 8.11% 7.89% 11:1
Corner Bet Inside Bet 10.81% 10.53% 8:1
Double Street Bet Inside Bet 16.22% 15.79% 5:1
Basket Bet Inside Bet N/A 13.16% 6:1


Image of a real roulette wheel USA


Two additional key things to keep an eye on in the gambling world is the lingo used in certain games, and the bets which are made in the game in question. We at Casino US have therefore combined the two, giving you a break down in different betting terms and game lingo to expect in online roulette.


An outside bet, when you place a bet predicting the ball to land on numbers one to eighteen (any of the eighteen numbers will win)


An outside bet, when you place a bet predicting the ball to land on numbers nineteen to thirty-six (any of the eighteen numbers will win)

Basket Bet

An American roulette wager, bet placed on number zero, double zero, one, two and three – also known as a top line bet

Corner Bet

An inside bet, a bet made on four numbers whose corners touch on the table

Column Bet

A wager made on twelve numbers on a column on the table


The name of the dealer in a game of roulette

Double Street Bet

Betting on two streets (or rows) in one by placing a chip between the two lines at the end of their street, also called a six line bet

Dozen Bet

Outside bet, when betting on four consecutive rows holding twelve numbers on the table – three dozen sets available

Inside Bet

A bet made on numbers or sets of numbers within the box layout of the table

La Partage

A French roulette rule in which half your wager is returned when playing a bet with a one to one payout and the outcome of the spin is zero

Odds or Evens Bet

You predict whether the ball will land on an odd or even value

Outside Bet

A bet made on a large group of numbers (i.e. all red numbers or all even numbers), these bets offer reasonable payouts with high probabilities of winning

Red or Black Bet

Betting on either all the red or black numbers of the wheel, you pick which color you predict the ball will land on

Split Bet

An inside bet when you wager on two numbers which lie directly next to one another on the roulette table

Straight Bet

An inside bet, a bet made on one singular number – 35:1 payout

Street Bet

An inside bet made on a row of three numbers

Image of live dealer roulette America


Why should I play roulette online as opposed to in a land based US casino?
Why does the double zero wheel give the house a greater advantage against me?
Why can’t I use my deposit bonus to play online roulette?
Can I play free online roulette anywhere?
As an American citizen, will I be able to play online roulette for real money?
What is the best online roulette bet to make?