online slots The online casino industry has evolved greatly. With so many innovations, operators search for ways to provide the best entertainment for online casino players.

Knowing that fairness has been a major concern, software providers devised a means to douse that tension. The Random Number Generator in casino (RNG) ensures fairness and credibility playing at online casinos.

Not all casinos have fair online slot games that are designed with RNG technology. Are you wondering how does a random number generator work or what is RNG?

Get all the answers about RNG and more as you read.

What Is a Random Number Generator and How Does It Work?

The simplest way to describe RNG meaning is to say that they are computer programs that randomly generate numbers. Also, to successfully generate numbers randomly, this technology relies on algorithms.

Numbers generated by RNG seem to follow a certain pattern or instruction. Nevertheless, top-notch RNG systems are very powerful. The patterns they follow are usually unreadable. In other words, predicting the outcome of such RNGs systems is very difficult.

More so, sophisticated RNG generates numbers continuously. That means numbers are generated every millisecond in most cases. So trying to learn how to predict numbers from a random number generator could be quite difficult.

How Do Casinos Use RNGs?

The casinos use RNGs that are called Pseudo-Random Number Generators (PRNG). The PRNG is similar to the random lotto number generator or that of the Powerball. Also, the PRNG doesn’t need external data to work.

Casinos use the RNG to assign a value to all the numbers in a game. For instance, for each symbol, the RNG is assigned a number. If the reel randomly lands on a number that is assigned to it, then you have won.

How to Ensure Random Number Generators Are Fair?

Most often, the fairness and legitimacy of the random number generator is an inevitable topic. Although the whole idea of an RNG may seem complicated, it has fostered some level of discipline regarding games created by software developers.

Online gambling regulators check the fairness of a gambling platform’s RNG too. The regulator’s duties include monitoring the RNG of the gaming platform to avoid rigging of results.

Not just that, there are independent companies that specialize in testing and verifying the fairness of a game. A company that is notable for testing the RNG of online gaming platforms is eCOGRA. Any online platform with the eCOGRA badge means that its RNG has been tested and verified to be fair.

RNG certification

Usually, before an end-user plays a game created by a software provider at online casinos, it goes through a series of tests and verification. The developer is issued an RNG certificate to confirm that the game is fair and credible. The RNG certificate is required for all casino games, slots, and even lottery. For instance, the South African lotto random number generator must be obtained before a lottery game becomes available to the public. The online random number generator used in designing the game is sent to a company specializing in such tests. RNG lottery, casino, slot, Powerball, etc., game auditors are serious with their jobs because their reputations are on the line. A few trusted companies that issue RNG conformity certificates are:

Random number generator casinos certified by any of these companies often display their certificate for the public view on their website. For instance, SA lotto random number generator certificates are often displayed at the bottom of their website homepage. Not to mention, lotto random number generator SA gaming use sites are audited by these companies too.

To obtain an RNG certificate is expensive, and the procedure is often hectic. Not a big surprise that some online casinos provide untested RNG games. The company that intends to get an RNG certificate must be registered and hold a development license. Aside from that, the generator ought to be certified and must comply with industry standards and parameters.

Instead of going through this hectic procedure, most developers buy the RNG certificate from certified vendors. So the certificate becomes automatically enclosed.

Is It Possible to Cheat RNGs?

Maybe, but in most cases, it’s very difficult to cheat a sophisticated RNG system. Frankly, most people are incapable of cheating the RNG system, except it is not working.

Nevertheless, some fraudulent online casinos take advantage of the weak RNG systems used by some software providers to design games. There are instances where online casino employees have attempted or successfully cheated the RNG system. It would be difficult for someone or a player who doesn’t have exclusive data on how the RNG system works to manipulate its result.

Therefore, cheating an RNG system is mostly very impossible, except it’s done with help from an insider. If you consider learning how to beat RNG software, then it is an exercise in futility. Also, 99.9 percent of the slot machine RNG crack sold online is scam and fake.

Which Online Games Use RNGs?

The RNG is used for all virtual games that have no live dealer online or offline. Games such as slots, casinos, bingo, etc., use online random number generators. Meanwhile, at an online live casino dealership, the random number generators are not used.

However, the slot machine RNG algorithm is quite different because they are often programmed to generate numbers every millisecond. Notably, lottery games also use RNG. The lottery random number generator is quite sophisticated, considering the high stake involved. The lotto random number generator is checked by the regulatory bodies often to guarantee fairness.

Also, Powerball games use RNG technology. For instance, SA Powerball random number generator systems are top-notch to ensure fairness, considering the fast-paced nature of the game. Most top software providers incorporate random number generators in casino games. Mind you, the random number generator in casinos may not be the same as lotto games.

What about Live Casino Games?

The online live dealership popularity has increased over the past five years. The live online casino games are similar to physical casinos. Interestingly, live casino games use real-life human dealers and croupiers to real cards. RNG technology is not used for online live casino games. Rather, the online live casino games use the same approach as the brick-and-mortar casinos to ensure fairness.

Like the physical casinos, online live dealers freshly shuffle the cards for each hand to prevent card counting. Although the results of live games are random, they are not the same as online casino games.

Furthermore, online live casino game providers use multiple camera angles to reassure players of transparency. Online platforms that offer live dealer games are always audited to ensure fairness and authenticity. Therefore, if the online casino has a valid license and a legal audit certificate, it has RNG in games played on its website.

RNG Effect on the RTP

The RNG is programmed to accommodate the Return to Player (RTP) percentage of the game. What’s more, if a gaming regulator discovers that the RNG affects the RTP of a game, the game will not be approved.

The method software providers use to ensure that the RNG doesn’t affect the RTP of a game is to divide the total turnover it has accrued by the total value of payouts of a game. More so, if the result is not close to the theoretical RTP, then the RNG of the game would be reviewed.

Top software developers ensure that the RNGs don’t affect the RTP of the game. In most cases, players consider the RTP of the game before they play. Therefore, if the RNG affects the RTP, then the player would not be guaranteed fairness.

Why Is RNG Important?

The RNG protects players from the activities of dubious online casinos. Also, the RNG made the online casino platform fairer. Therefore, the RNG protects players against dubious online casino operators who may want to alter the casino results. After reading this, you boldly explain to a person who would like to know how does random number generator work in detail.

Finally, the random number generator lottery systems may function differently from online casinos, but they aim to guarantee fairness. For fairness, always play at gambling platforms with random number generator casino games.

Leah Shepherd
Chief Editor at
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Experience:7 years

I’m Leah and I joined the team in July 2020 as a second editor of

Now I review licensed online casinos and slots on the South African market to provide the readers with juicy and rich bonuses, the newest promotions, and other useful information to help them make the right choice and enjoy safe and joyful gambling.

Banele Nkuna
Editor at
Experience:3 years

My name is Banele Nkuna, and I am thrilled to be a part of the team as the second editor.

With a passion for online gambling and a deep understanding of the South African market, I have been entrusted with the task of reviewing licensed online casinos and slots and preparing blog posts for our site.

Since joining in May 2023, my primary goal has been to provide our readers with valuable insights into the world of online gambling.