Casino RNGs (Random Number Generators) Explained

When people want to try or play games found in online casinos, one question that consistently comes up is, how fair are the games? If you have found yourself asking this question and have been doing your research, you have probably come across something called a Random Number Generator (RNG). 

Basically, this nifty little system is the brains of online slot machines and is regularly inspected by third parties to ensure that it is functioning optimally. You may have already heard of casino RNGs. However, you might not fully understand how it works as there are often a variety of misconceptions and myths surrounding online slot machines and RNGs.

So, what exactly are RNGs, how do they work, are they a reliable way to verify the authenticity of an online casino, and are they really random? This article will explain everything you need to know about RNGs and how they work.

What Is RNG?

Simply put, a RNG is a computer chip that helps online slots generate numbers or symbols at random. The biggest challenge for online casinos is making their games behave essentially the same way as live casino games. 

So, a foolproof computer system had to be installed to ensure everything is fair and that, as a player, you can't cheat. That is what a RNG is

If you've been reading about RNGs, you may have already realised that there are two main types, Pseudo Random Number Generators (PRNGs) and True Random Number Generators (TRNGs). Online casinos generally use PRNGs. These are unique and preferred in that they do not require any external input such as data or numbers to produce any output. Instead, they only need an algorithm and seed value or key (initial value). 

PRNGs are known to be efficient as they can generate countless numbers within a short time frame. They are also deterministic, which means that they can reproduce a specific sequence of numbers at a later date if needed, and they are periodic. However, modern PRNGs have a significantly long period to ensure the sequence does not repeat itself often, if at all.

Essentially, using a RNG prevents the repetition of a particular pattern and ensures that you receive an unexpected result every time you spin the reels.

How Does an Online Casino RNG Work?

The RNG generates numbers by following a formula called an algorithm, which consists of a series of instructions. It is continually rolling. The machine continuously selects random numbers every millisecond as long as it has power.

The RNG calculates a value of approximately 0 to 4 billion, which is then translated into a specific set of numbers for the symbols on the reels. Then, the RNG determines the outcome of every spin based on the number it chooses. This ensures that the game is completely fair and random at all times.

The moment you place a bet on a slot game before you even hit the Spin button, the RNG has already generated a million different seed numbers to be used in the algorithm. 

Are RNGs Fair?

Since RNGs generate random numbers, which are then translated into the slot game's symbols, as a player, you have no way of knowing what symbols will be chosen next. As a result, this ensures that the game is entirely fair.

So, yes. RNGs are fair. While there is a common misconception that RNGs are not entirely fair and casinos may use them to their advantage, this is not true. Moreover, all reputable casinos have to send their RNGs for testing. There are numerous organisations that are authorised to ensure the randomness and fairness of casino RNGs.

These include names such as the eCommerce Online Gaming Regulation and Assurance (eCOGRA), Quinel Limited, Gaming Labs International (GLI), Gaming Associates, and iTechLabs.

Just be sure that if you decide to play at a new online casino, you check to make sure that they are licensed and regulated by a reputable public body. 

Here at Kong Casino, we strictly follow online gaming regulations under the United Kingdom Gambling Commission (UKGC). So, you can rest assured knowing that our online casino games are fair and secure.

Can You Trick a Random Number Generator?

Most people will tell you that it is possible to trick and or cheat a Random Number Generator. But, that is not true. In theory, RNGs may be able to be deceived, but it is a near-impossible mission because RNGs are extraordinarily complex and well regulated. 

Some players believe that casinos rig their RNGs for them to work to their advantage. But, of course, this is false. As mentioned above, RNGs are regularly tested by certified third parties to ensure they maintain fairness and randomness.

Do Random Number Generators Have Patterns?

The most common myth about RNGs is that they have a cycle or pattern that indicates when it is likely to pick potentially winning combinations. While it may not be possible to see in real-time the mathematical equations these RNGs use, they are programmed in such a way that their outcomes cannot be predicted.

As such, it would be impossible to guess or predict its outcomes. The whole point of RNGs is to ensure that you cannot predict a slot's outcome. Therefore, they have no patterns. 

Furthermore, RNGs are used in many different areas to ensure security. For example, they are used in writing and or solving codes, known as cryptography. Here, RNGs are used to create disposable pads. These One Time Pads (OTPs) use an unbreakable encryption technique and plain text cannot be obtained without using an encryption key.

Random Number Generators are also used in scientific research because they are known to generate completely random numbers without any pattern.

Can You Use RNG Cheat Software?

There isn't any RNG cheat software we know of currently. But, even if there were, it would be complicated to implement as these programmes are tested regularly to avoid cheating.

Besides, the point of online casino games is to ensure fair play and complete randomness. If you knew when particular numbers or symbols would hit, the game simply wouldn't be secure anymore. Nearly all players may end up assuming that their competitors were using cheat software, which could potentially drive the business down and could end up in it closing down altogether.

So, the best thing you can do is learn as much as you can about the rules of the casino game(s) you wish to play and keep your fingers crossed for a potential random win.

Are Online Casino Games Really Random?

The Random Number Generators used in online casino software play a crucial role in the games, as randomness is an integral aspect of them. Generally, casino games are considered to be games of chance.

This means that the slot results have completely random outcomes, so it is impossible to accurately predict them. So, yes, online casino games are really random as long as you play from reputable sites like All licensed and regulated casinos use RNG software that has been independently tested by trusted and licensed parties.

Almost all the appeal of casino games lies in their random nature. Despite facing the risk of losing, there may be excitement that comes from the idea of potentially winning big and not being able to control the outcome.