The Roulette Wheel ... and how to worry the casino! *

* See the bottom of the page


Roulette is a game of chance. It uses a spinning wheel with either 37 or 38 numbered pockets. The roulette wheel is spun one way and a ball is sent round the other way. Roulette can be played in person at real tables.

You can check out the best online roulette Australia casinos according to SmartPokies, if you prefer an online option.

Before the wheel is turned, players bet on where the ball will land. There are lots of different ways to do this including online casinos, and the chances of winning and the payouts vary.

The first recognisable roulette game was played in a Paris Casino in 1796. The game is designed to give the casino an edge - in other words, over a long time players should lose slightly more than they win. That's how casinos can afford to have lots of smart people in suits standing around saying "Good evening Mr Bond".

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Unlike Mr. Bond however, the casino is not always invincible. We're going to look at the maths behind roulette, and how new online casinos such as the ones listed at TheCasinoDB gain their advantage and how you can gain yours!

Here's how the sums work:

EUROPEAN TABLES (single zero)

Most European roulette tables have 37 holes numbered 0-36. The 0 is coloured green, the other numbers are red or black (18 of each). There are lots of places to play online roulette. grants instant access to Australian Online Casinos 2020 with free spins so you can try the latest online pokies in Australia for real money with no deposit and no downloads required.

One bet is to pick any single number. This pays out 35/1. Therefore if you put 1 on it and your number comes up, you will receive your winnings of 35 plus your original 1 = 36 in total.

However the chances of winning are 1/37 because there are 37 numbers and only one winner. This means if you play 37 times, it will cost you 37, and on average* you should win once which will give you 36. In other words, if you play for years and years, for every 37 you bet, you'll get back 36.

The simplest way to show this is to put 1 on every number, so that's 37 in total. Spin the wheel. The winning number will give you 36 back, the rest all lose, so you're 1 down.

The house wins 1 out of every 37 bet which is 2.7%. It might not sound like much, but when big money is flying around, it soon adds up! Click here for a list of UK casinos.

* There is NO guarantee you will win one time every 37 games! You might not win any, or if you're very lucky you might win two or more. It's like throwing a dice six times. On average you should get one six, but you might get more, or you might get none.

Another common bet on roulette is Red/Black. This pays out 1/1 (or evens), so if you put 1 on red and it wins, you get 1 plus you get your original 1 back = 2 in total.

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Your chances of winning are 18/37 because there are 18 red numbers out of the total 37. If there was no ZERO hole, then the chances would be 18/36 = 1/2. It would be an even bet and you should win exactly as much as you lose. However the ZERO will come up about 1/37 times, so neither red or black win. Once again, this gives the house a 2.7% profit.

Among the various online or offline casino games to choose from, players in Australia generally prefer playing online pokies (how they call slots in Australia).


Players put their bets on a cloth known as the layout.

Here we've put a selection of markers out. The table shows the chances of winning, and the payout.

What's the bet? Win chance Payout
Single bet on number 6 1/37 or 2.7% 35/1
Split bet on 26 and 29 2/37 or 5.4% 17/1
Triple bet on 13,14,15 3/37 or 8.1% 11/1
Triple bet on 0,2,3 3/37 or 8.1% 11/1
Four-way bet on 19,20,22,23 4/37 or 10.8% 8/1
Six-way bet on 28,29,30,31,32,33 6/37 or 16.2% 5/1
Bet on all numbers 1-12 12/37 or 32.4% 2/1
Bet on all numbers in centre column (not zero) 12/37 or 32.4% 2/1
Bet on all numbers 1-18 18/37 or 48.6% 1/1
Bet on all black numbers 18/37 or 48.6% 1/1
Bet on all odd numbers 18/37 or 48.6% 1/1
ZERO is not odd or even, and is not black or red!

AMERICAN TABLES (double zero)

If the European tables didn't have the green zero pocket, then there would be no profit for the Casino. American tables have a second green pocket, the double zero. This doubles the profits!

In practice, you can test this feature on the following demo games:

Some places do play special rules regarding these zero pockets, e.g. if you bet on all the odd numbers and zero or double zero comes up, they only take half your money.

How nice of them!

Let's see what the chances are on a double zero wheel:

What's the bet? Win chance Payout
Single bet on double zero 1/38 or 2.6% 35/1
Single bet on number 13 1/38 or 2.6% 35/1
Split bet on 34,35 2/38 or 5.3% 11/1
Triple bet on 4,5,6 3/38 or 7.9% 11/1
Four-way bet on 26,27,29,30 4/38 or 10.5% 8/1
Six-way bet on 10,11,12,13,14,15 6/38 or 15.8% 5/1
Bet on all numbers 13-24 12/38 or 31.6% 2/1
Bet on all numbers in right column (not zero) 12/38 or 31.6% 2/1
Bet on all numbers 19-36 18/38 or 47.4% 1/1
Bet on all red numbers 18/38 or 47.4% 1/1
Bet on all even numbers 18/38 or 47.4% 1/1
ZERO and DOUBLE ZERO are not odd or even, and are not black or red!

You might prefer your chances at casinos with online roulette no deposit bonus.


Answer: You don't - well not for certain!

There are stories of people who have won at roulette but for everyone that wins, there are lots more who lose! Of course, there's fun to be had in trying a "system", so even if you lose a little bit, you've enjoyed yourself.

If you're keen on testing your luck at the roulette wheel, exploring various roulette casinos can provide a diverse range of platforms where you can try different strategies and enjoy the thrill of this classic casino game online. These casinos offer various roulette variations, creating an immersive gaming experience for both beginners and seasoned players.

In the old days, some gamblers used to watch the same roulette wheels week after week, and very occasionally would notice a "bias" which made the wheel favour some numbers slightly more than others. By continually betting on these numbers, the gamblers turned the odds in their favour and started to win - until the management realised and mended the wheels.

The main rule about winning or losing is that you must set yourself a limit of how much you're happy to lose, and if it all goes then STOP!


That's what we put at the top of this page, and there is a method!

Imagine you're going in to play with 100. You have two choices...

  • You bet 1 every time, putting it on red/black or odd/even.
  • You put all your 100 on one number for just one turn of the wheel.
Which is better?

If you play 1 a time for ever and ever, very slowly and surely your money will go, but if it's a nice place, then maybe it's worth it. And the casino will love you because even if you do happen to get ahead and then stop, it won't cost them much.

Of course if you put all your 100 on one number, you will probably have a very short visit... but the Casino will worry! That's because if you DO win it'll cost them 3,500. They won't like that!

However, you don't have to stress too much about being on bad terms with a casino. Most of them, especially online, run various sister sites , so you can just sign up with a new one if you feel that you've burnt bridges.

So if it makes the Casino worry, then it has to be better for you!

There are more stats and facts about games at

Chances of Card Hands

Craps - How to Play, Chances and Payouts

Blackjack - Hit or Stand?

The History of Mechanical Slot Machines

How many ways can you put a pack of cards in order?

UK National Lottery Odds

The Betting Guide - and how to work out the Bookie's profit!

A Guide to Accumulator Bets

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