The Random Number Generator (RNG)

Casino sites have adapted the use of random number generators (RNGs) in their software. These devices are used by casinos all over the world and provide players with what should be completely random outcomes no matter how often they play.

Internet casinos have been getting increasingly sophisticated over the years, and have been getting closer and closer to providing gamblers with an experience that is as close to the in-house experience as possible. One of the best ways casino sites can mimic the real world adventure, is to have the games behave in a very similar manner as the land-based ones. While reproducing all of the elements that are present in a real casino can be difficult, there is software that can help with this endeavour.

But do these RNGs really deliver on this promise? We’ll take a closer look at what exactly a Random Number Generator (RNG) is, how it works, how casinos use them, and why they are important in todays internet gambling age.

About Random Number Generators (RNGs)

A random number generator is a computer program that generates a sequence of numbers or symbols determined by statistical analysis. This type of software is used to determine the outcome of a variety of casino games.

The most popular RNGs are created through mathematical algorithms. In contrast to human-generated random sequences, which may be biased towards certain outcomes, these algorithms produce sequences that have an equal probability for any outcome. These RNG’s can provide the same level of fairness while using less computing power than older methods like shuffling playing cards or rolling dice.

How Does a Random Number Generator (RNG) Work?

RNGs work by using a seed number to generate a sequence of numbers. The seed number is provided by the player, and the sequence is used to determine the results of games. This ensures that each game is completely random and that the odds of winning are always the same.

Once you’ve chosen a game to play, the casino site will load an RNG program onto your computer or mobile device. This program will then generate a series of random numbers which are used to determine the outcome of the game. Roulette wheels, card decks, and dice rolls for example, are all powered by random numbers from the RNG.

How do Casinos Use Random Number Generators (RNGs)

These casinos use RNGs to create games that are completely random. These generators are tested to ensure that they produce unbiased, unpredictable results. The algorithms that underlie RNGs follow formulae which make it extremely unlikely that the numbers they generate could ever be predicted in advance.

Casinos use hardware RNGs for games of chance like roulette or slot machines because their unpredictability makes them ideal for gambling situations. There’s no way to know with certainty whether a casino website is using a legitimate RNG or not since the code behind the generator is secret. However, eCOGRA is an independent organization that offers audits of popular casinos, and all of the casinos that are licensed and regulated by the UK Gambling Commission use an RNG that has been certified by eCOGRA.

How can you be sure that the numbers produced by an RNG are truly fair?

Some players may be hesitant to trust a casino site, fearing that the games may not be fair. However, the use of a modern, reliable RNG provides an extra layer of protection against fraud and guarantees that the games are as fair as it gets.

Casinos use a variety of methods to generate unpredictable numbers. Hardware RNGs are tested extensively in laboratories to ensure that they produce truly random results. Software RNGs are also tested for randomness, usually using something called a Monte Carlo simulation. This tests how well the RNG generates numbers that pass statistical tests for randomness. Pseudo-random number generators are also tested for randomness, but not as rigorously as hardware and software generators.

Checking the fairness of a casino online is difficult because it’s not like checking the fairness of a slot machine in a physical casino. There’s no way to know for sure whether the casino is using a fair RNG or not. However, like we have mentioned before, there are some organizations like eCOGRA that audit internet casinos to make sure they’re playing by the rules.

They also have a seal of approval that players can look for to ensure the casino is fair. The seal will be on the casino’s website and will link to a report showing that the RNG has been tested and passed as fair.

So, next time you’re playing your favourite casino game, take a moment to relax and know that the random numbers being generated are truly random and fair.

Why are Random Number Generators (RNGs) Important?

The existence of a Random Number Generator is very important for any casino website looking to be legitimate. One of the most important use of the RNGs is in its role with imitating the live-action casino experience. Whether you are playing slot machines, blackjack, roulette, or any other popular game, it is important that their results are random and emulate the brick-and-mortar casino action.

Without a doubt, Random Number Generators play an essential role in ensuring the fairness of casinos. By using an RNG for card shuffling and random number generation, casinos can provide players with a level of assurance that the games they are playing are fair and unbiased. This is a critical component and one that should not be taken lightly.


Random Number Generators are used to make sure that the games played are fair and unbiased. They offer players a level of assurance that their game play will be legitimate, even if they’re playing from the comfort of their own home. Without RNGs, there would be no way for casinos to provide this guarantee because it’s not possible to know whether or not your card shuffling is being done fairly without an RNG in place. The existence of these generators becomes increasingly important as more people turn away from brick-and-mortar establishments and gamble exclusively on the internet.


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