Role of Random Number Generators (RNGs) in Casino Games

Understanding RNG in Online Casinos

Online casino players often come across the acronym RNG when delving into the world of online gaming. But what does RNG actually mean? In this article, we will explore the concept of RNG (Random Number Generator) and its significance in the realm of online casinos.

The Role of RNG in Casino Games

RNG, which stands for Random Number Generator, is a computer program designed to generate random numbers and sequences. In the context of casino games, RNGs are employed to determine the outcomes of games of chance such as slots, roulette, and card games. By producing random numbers that correspond to specific game results, RNGs ensure the fairness and authenticity of online casino gameplay.

Types of RNG: True and Pseudo

There are two main types of RNG: ‘True RNG’ and ‘Pseudo RNG.’

True RNG, also known as TRNG, utilizes unpredictable physical variables like airwave static, the behavior of subatomic particles, or radioactive decay of isotopes to generate truly random numbers. These phenomena exhibit pure randomness, which ensures the authenticity of the game outcomes.

Pseudo RNG, on the other hand, employs mathematical algorithms to generate random numbers. While not as secure as True RNG, Pseudo RNGs are widely used in online casinos as they can still produce sufficiently random results. To ensure fairness, reputable online casinos subject their RNGs to rigorous testing by independent auditors like eCOGRA and Gaming Laboratories International (GLI).

The Significance of RNG in Online Casinos

Both land-based and online casinos rely on RNGs to guarantee fair and unbiased gameplay. However, online casinos, in particular, heavily depend on certified RNGs to replicate the randomness of real-world casinos and provide players with an authentic gaming experience. These well-regulated sites utilize thoroughly tested RNGs to ensure that all their casino games produce truly random outcomes.

Popular Online Casino Games that Utilize RNG

Several types of online casino games utilize RNG technology to determine their outcomes. Here are three popular examples:

1. Slots

Slot games employ RNGs to determine the outcome of each spin and the symbols that appear on the reels. The use of RNGs in slots ensures that every spin is independent and produces unpredictable and varied results.

2. Roulette

The RNG in roulette generates random numbers that correspond to specific slots on the roulette wheel where the ball will land. For each spin, a new random number is generated, ensuring an unpredictable outcome every time.

3. Blackjack

RNGs are crucial in blackjack as they randomize the cards dealt to both players and the dealer. By generating random cards, the RNG ensures that each hand has an uncertain outcome, replicating the unpredictability of a real casino.

Regulation and Certification of Casino RNGs

To maintain fairness and randomness, online casino RNGs undergo regulation and certification processes conducted by independent testing agencies. The primary regulators of iGaming RNG standards include:

BMM Testlabs

BMM Testlabs, a prominent iGaming tester, certifies RNGs according to the requirements set by regulatory bodies such as the UK Gambling Commission and MGA.

iTech Labs

iTech Labs is an internationally recognized iGaming testing and certification lab that evaluates RNGs based on properties like randomness, unpredictability, and independence of outcomes.

Gaming Laboratories International (GLI)

GLI is one of the largest certification bodies in the iGaming industry, responsible for testing RNG software according to the requirements set by regulatory authorities worldwide.


eCOGRA, a renowned independent standards and player protection agency, reviews and certifies RNGs for their randomness, fairness, and compliance with industry standards.

Where to Play RNG Casino Games Online

Players looking to enjoy RNG casino games can find numerous reputable online casinos that offer fair and random outcomes. These online casinos feature a wide range of games powered by certified RNGs. For instance, at 888 online casino, players can access over 200 slot games with outcomes determined by RNGs, including progressive jackpots, video slots, and classic 3-reel slots. Additionally, players can engage in European, French, and American roulette games, all utilizing RNG technology to determine the winning numbers.


1. Should You Avoid Casino Games That Use RNG?

No, you should not avoid casino games that utilize RNG. In fact, RNGs are instrumental in ensuring fair play and randomness in online casino games. Reputable casino sites employ certified RNGs that have undergone meticulous testing by independent auditors to meet stringent standards of randomness, unpredictability, and fairness. As long as you play at a licensed and regulated casino site, you can confidently enjoy RNG games, knowing that the outcomes are genuinely random and that you have a fair chance of winning.

2. Can Casino RNG Be Rigged?

No, casino RNG cannot be rigged at reputable and licensed casinos. While some individuals may claim that RNG can be manipulated to produce desired outcomes, certified RNG software undergoes rigorous testing to ensure it generates truly random results. Independent testing agencies carefully analyze the RNG algorithms and software to verify that the random numbers are unpredictable, non-repeatable, and evenly distributed. Any potential flaws in the RNG that could be exploited would be detected by these auditors.

3. Can You Beat RNG at a Casino?

No, it is exceedingly challenging to beat RNG at an online casino. While some players may claim to have “systems” to outsmart RNG, the truth is that certified RNG produces unpredictable random numbers. Unless the casino is unfair or uses flawed RNG technology, the outcomes of games will always be truly random. It is nearly impossible to gain an advantage over the house in the long run. The potential for an edge lies in taking advantage of bonuses, promotions, and VIP rewards rather than attempting to “beat” the RNG.

4. Is Casino RNG Fair?

Yes, casino RNG can be fair if the online casino employs certified RNG software that has undergone extensive testing by independent auditing agencies. Reputable casino sites display the logos of third-party testers such as eCOGRA, GLI, and iTech Labs on their platforms, ensuring that their RNGs meet strict standards of randomness, fairness, and compliance with industry regulations.

5. Is Casino RNG Truly Random?

Yes, casino RNG can be genuinely random when a licensed and regulated online casino site employs a certified RNG that has undergone rigorous testing. If the casino site prominently displays the logos of reputable auditors and follows all necessary regulations, players can trust that their games’ outcomes are genuinely random. However, it is essential for players to conduct their own due diligence in choosing a trustworthy casino site.

Are Slots Based on True RNG?

Slot games utilize certified RNGs to ensure fair play and produce genuinely random outcomes. The RNGs used in slots are typically of the Pseudo RNG variety. Pseudo RNGs generate random results using algorithms rather than unpredictable physical variables. While these algorithms can be predicted to some extent, RNG software utilized by reputable online casinos is rigorously tested to ensure that the results it generates remain suitably random and unbiased.

How Can I Determine If a Casino Site Uses RNG?

When choosing an online casino, there are several ways to determine if the site utilizes RNG technology:

– Check if the online casino explicitly states that they use certified RNG software to power their games.

– Look for the logos of independent testing agencies displayed on the casino site.

– If patterns emerge in game outcomes or if certain numbers or results seem to appear more frequently, it may indicate flaws in the RNG’s randomness.

– Reputable casino sites will not make claims about “beating the RNG” or provide strategies for gaining an advantage in their games.

– A valid license from a reputable regulatory body is essential, as it requires the casino to use fair and tested RNGs. Look for

Doug I. Jones

Doug I. Jones

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