Roulette Strategy Simulator

As probably the most well-known casino game in existence, roulette has been the subject of countless systems and strategies designed to beat it. For this reason, Roulette Geeks has devised its very own roulette strategy simulator which allows users to see the exact probabilities for each of the five most-used roulette betting strategies.

The principal of this simulator is not to champion one strategy whilst condemning another. It is to provide an equitable roulette simulation representation based solely on the established variables within the game itself and the chosen strategy being employed.

How our roulette strategy simulator works

An important thing to bear in mind is that this is not a roulette table simulator. This means there is no playing practice games of roulette to test a certain strategy. A better name for it might be a roulette strategy probability simulator.

Roulette Geeks believes that practice simulation can be a somewhat deceptive method of providing the player with accurate data. For example: if the player is using an online American roulette wheel simulator, or even a European wheel to practice, how can they be sure that the results collected are 100% true?

The answer is they cannot. Many people are already under the belief that casino games offered in free play mode are more likely to give the player a win as way to manipulate the player’s decision towards getting on the real money games. Whilst we are not claiming this to be true, it is a consideration which astute players think about.

A second important factor is the sample size. Whether using a wheel in your garage or a roulette simulator online, how long are you prepared to sit there and keep spinning it for? However long, we can assure you it won’t be long enough.

The house edge for roulette is a percentage based on the Law of Large Numbers. We know the theoretical return to the player is 97.3%, but, this does not guarantee a player €97.30 every time he/she steps up to the roulette table with a €100. That is the beauty of the game and the thrill of gambling; knowing that it is possible to turn that €100 into €10,000 (although statistically more likely to end up as €0).

In order to effectively use and understand the information presented by our roulette simulator, read through the step-by-step guide below.

Enter personal preferences

The first thing required to do is set up the simulator with some personal preferences. The image above shows the default settings.

In order to change any value, simply click on the number and a separate pop-up box will appear for the new value to be inserted.

Roulette Strategy Simulator

Metric Description Range


Amount The sum of money being brought to the table


€1 – €100,000
Bet The base wager amount


€1 – €10,000
Table limit Maximum wager amount the table allows


€1 – €10,000
Incr. (D’Alembert) The € value of wager increases per round/spin. Only applicable for the D’Alembert strategy €1 – €1,000
Spins The number of spins you want to analyse


1 – 2,500
Target The amount of money the player wishes to leave the game with €1 – €10,000

With the desired metrics set up, all that needs to be done is to choose from one of the five strategies. If you are unsure of how the betting works for a particular strategy, please refer to our Winning Strategies & Systems page. (

When you click on a strategy, the results will automatically appear. There is a choice between fast and full simulation modes. As the names suggest, the fast mode is a very quick roulette simulator with results being displayed instantaneously. The full mode takes a few seconds longer but offers a touch more detail.

Understanding the data

As we mentioned above, this is not a roulette simulator game. Therefore, the data does not provide a singular result from one particular trial. This can cause some confusion for new users of the tool which we’ll aim clear up here by offering some examples and accompanying explanations.

Flat Bet Strategy

Below you can see the data for the Flat bet strategy. Starting with a €100 balance, using  €1 bets and based on only 4 spins. The vertical axis shows the bankroll while the horizontal axis displays the number of spins.

The floating line in the middle shows the win/loss probabilities at any given spin during the simulation. The information at the bottom shows the percentage likelihood of winning some money verses losing some money at the same moment in the game.

The percentages of the right show an accurate display of the chances of winning/losing overall.

Roulette Simulator

You would have noticed that it is symmetrical. This is due to the betting pattern being used (each round/spin the bet is for €1 no matter what the outcome of the previous bet was). The second reason it is currently symmetrical is due to the very low amount of spins.

Another way to think about the data is illustrated below. The result of the each spin is either WIN or LOSE. So, the first spin offers the options: W or L.

The result of the second spin has four possible outcomes if being viewed from a consecutive results perspective; giving the following possible outcomes: WW, WL, LW or LL

Result of 1st spin

Result of 2nd spin

Result of 3rd spin

WWW (€103) (11.5%)
WW (€102) (23.6%)
WWL (€101) (12.2%)
W (€101) (48.65%)
WLW (€101) (12.2%)
WL (€100) (25.0%)
WLL (€99) (12.8%)
LWW (€101) (12.2%)
LW (€100) (25.0%)
LWL (€99) (12.8%)
L (€99) (51.35%)
LLW (€99) (12.8%)
LL (€98) (26.4%)
LLL (€97) (13.5%)

With a total of 8 possible outcomes after 3 spins, the flat bet strategy reveals that 4 outcomes will show a profit, while the other 4 show a loss.

If only it were that simple, we’d all be professional roulette players.

Unfortunately, the house edge has to be factored into the equation. The chances of winning an even money bet on a European roulette wheel are 48.65%, whilst losing stands at 51.35%. The chances of winning two consecutive bets are 23.6% compared to 26.4% for losing the same number (approximate values). Simply put, the longer a player plays using the flat bet strategy, the greater the chances of losing become.

This is clearly illustrated in the graph below where the number of spins is set at 2,000.

Roulette_Strategy Simulator

This data is backed by the Law of Large Numbers. It is this law which states that with an infinite amount of spins, the rightful game (house edge) percentage will prevail.

So, what is the purpose of consecutive level results? Fundamentally, they provide the backbone of every single roulette strategy invented. The player needs to be convinced that losing ten or twenty times in a row is virtually impossible – so much so – it won’t happen. While the odds of losing 20 even money bets in a row is considerably low, the fact remains it can happen (and at some point it will).

Roulette Simulator Martingale Strategy


The roulette simulator Martingale strategy data shows a much different picture to that of the flat bet strategy. It is clear to see that a lot more of the outcomes end up equal to or above the starting bankroll amount of €100.

Of course, the flip side shows with a series of losses, the bankroll amount plummets faster the value of the British pound after Brexit. So, yes, after four spins, the chances of being in profit stand at 74.13%, which is very nice, but there is a 25.87% chance of losing – and the losses are bigger than the gains. The image below is still using the Martingale strategy but we have increased the number of spins to 50. As is clear to see, the majority of the blue lines converge above the €100 starting amount. 


The line bar in the centre indicates that at the 25 spin point there is an 8.98% chance that the player would have lost all their bankroll by this point. If still in the game, the data shows that the player stands an 85.88% chance of being in profit.

You can begin to see the potential of this tool and this is why we feel that it is the best roulette simulator on offer. The days of slogging away over a roulette simulator excel edition are long gone. Here users are shown 100% accurate data which comprises of both the win/lose probability and the house edge.

Roulette Strategy Simulator Martingale

The flexibility in the setting preferences means that a user can customize it to mimic the exact conditions in which they would play, ranging from the bankroll to the table limit. By giving this roulette simulator 1000 spins (or higher if you wish), you can obtain data in seconds which would have taken weeks to compile using pre-computer methods.

Allowing users to see a visual representation of the probabilities and compare strategies against one another will help them highlight the strengths and weaknesses of each strategy. This opens up a wealth of opportunity for minor adjustments to be made. Who knows, perhaps the ultimate perfect roulette strategy has yet to be discovered – and this tool might just help you find it. If you are looking for a roulette simulator simple in design yet extremely powerful, fast and precise in its data, then this is the one for you!

Ready to play with the roulette simulator?

Right, you’ve tested each strategy with our roulette simulator free to use tool. You fully understand the optimal points in a game where your winning chances are at their statistical peak value. Perhaps, you have even added one or two adjustments of your own which you would like to try out in the real world. It is now time to enter the gladiatorial battle ground to pit the roulette strategy against the casino and its house edge.

However, smart players ulitise another trick to help defeat the house. That is free bonus money. At 888casino new players can get up to €888 in free money to play with. So, armed with the best possible roulette strategy known to man and pockets full of free cash, you are fully equipped to enter the arena and show the casino that the house doesn’t always win. Today is your day!