Gambling is the magic that makes the heart beat faster, and the casino’s Random Number Generator (RNG) is its invisible conductor. It ensures that every spin of the reels, every card, every spin of the roulette wheel is pure chance. It is this algorithm that guarantees the integrity of the casino RNG and makes the game fair and unpredictable.
How does RNG work in casinos?
A random number generator is a special algorithm, a piece of software, that produces completely random sequences of numbers. They determine the results in the following games:

- Slot machines – RNG decides which symbols will appear on the reels.
- Roulette – determines which number the ball will land on.
- Poker is the randomness of the card dealing.
- Table games (blackjack, baccarat) – unpredictability of the game.
The RNG generates millions of numbers every second, so each result is unique.
Why RNG important for fair play?
RNG is the key to honesty in online gambling. It eliminates any manipulation and gives equal chances to all players. That is why casinos are regularly checked by certified independent laboratories. If the RNG has passed the test, it means that you are playing honestly!
How does RNG work in slots and table games?
RTP indicates how much money is returned to players from the total amount of bets. If a slot's RTP is 96%, this means that for every 100 units invested, on average, 96 will be returned, and the casino will keep 4%.

What is RNG in slots??
RTP (Return to Player) shows how much money is returned to players from the total amount of bets. The formula is simple:
RTP = (amount of winnings / amount of bets) × 100%
For example, a slot with an RTP of 96% means that theoretically, out of every 100 units invested, 96 will be returned. But this is a long-term calculation - in a few spins you can either hit the jackpot or lose.
Volatility: risk or stability?
Volatility determines the nature of the game:
- Low – frequent but small wins.
- Medium – balance between risk and reward.
- High – rare but large payouts.
What is Dispersion?
Variance is the same surprise factor. For example, if the RTP of a slot is 95%, then a player, betting 100 hryvnias, should theoretically lose only 5 hryvnias. But RTP is calculated over millions of spins and in a short period of time the results can vary greatly. It is this variability that is called variance.
RNG in table games
In the world of online gambling, a random number generator (RNG) plays a key role in ensuring the fairness and unpredictability of the gaming process. Thanks to RNG, each spin on a slot machine, the deal of cards in blackjack, or the result of a roulette wheel spin is generated independently of previous events.
GHF in roulette

In traditional roulette, the outcome is determined by physical forces – gravity, friction and the movement of the ball. The online version uses GHF, which simulates the randomness of the real wheel rotation. Each spin is unique and independent of previous results, which eliminates the possibility of predicting the appearance of a particular sector.
How does GHF work in blackjack?
In online blackjack, implemented in the format of an automated game, the cards are dealt according to the GVC algorithm. Before each deal, they are virtually “shuffled”, which makes it impossible to count cards and use the strategies common in land-based casinos. At the same time, many operators offer live blackjack, where the cards are dealt by a live dealer, and randomness is ensured by physically shuffling the deck.
Using GHF in poker

In poker, the RNG can be used not only to deal cards, but also to strategically choose moves in difficult situations. Many players use special RNG applications or even a regular six-sided die to determine the optimal line of play. This adds variability to their strategy and makes it difficult for opponents to predict actions.
Can a casino manipulate the RNG?
Unlicensed casinos can manipulate game results because the lack of control allows them to change the way the software works. At the same time, licensed platforms are deprived of this opportunity. Their random number generators (RNG) are regularly checked by independent auditors, which makes fraud impossible.
Often, players mistakenly believe that RNG is capable of creating certain sequences of wins or losses. In fact, each spin is a separate case, and previous results do not affect the next ones. Algorithms work in such a way that they remain unpredictable, so it is almost impossible to cheat the system.
Types of random number generators
Modern online casinos use two main types of RNG: algorithmic and hardware.

1. Algorithmic random number generator
The most common method in digital casinos is software RNG. It works on the basis of mathematical algorithms that create random sequences of numbers. The algorithm takes an initial value (seed) and applies complex calculations to it, making it impossible to predict the results.
2. Hardware random number generator.
Some casinos use RNG based on physical processes, such as noise in electronic circuits or the natural decay of radioactive particles. This method provides an even higher level of randomness, but is less commonly used due to the complexity of implementation.
Myths and truth about RNG in casinos
The key element of any slot machine is the random number generator. It is he who determines the outcome of each spin of the reels. Theoretically, slot developers create them in such a way that the casino cannot interfere with the game process. Even after rebooting the device, the RNG settings remain unchanged.
Is it possible to "hack" the RNG?
During each rotation RTP and RNG in slots generates a new set of numbers that determines the position at which the reels will stop. This eliminates the possibility of influencing the game results or developing winning strategies.
Is it possible to predict the results of slots??
Experienced players, not to mention people who work in the gambling business, are often skeptical of strategies. They know that no strategy actually gives guaranteed results. The reason for this is quite simple - no user can predict how a slot machine will behave.

Any slot uses software known as random number algorithm in gamesIt works continuously, giving new values every millisecond. Each subsequent spin of the reels is independent of the previous one, and therefore any attempts to analyze patterns are futile.
Does the RNG change after a big win?
Each game session is autonomous, meaning that the results of previous rounds do not affect the next ones in any way. This means that winnings and losses have no cyclicality or regularity – each bet occurs under completely random conditions. This principle guarantees fair play for both beginners and experienced users. However, slots often have mixed volatility (e.g. medium-high), which means that the game can change its character depending on the mechanics and bonuses.
How to choose a casino with an honest RNG?
Recently, the issue of casino reliability has become extremely relevant for players. Many are familiar with stories about how easy it is to lose money by choosing a dubious gambling site. Some users have experienced this personally, so they know how important it is to pay attention to the reputation of the service and casino RNG check.
The very first selection criterion should be the availability of a license. An official permit from the regulator confirms that the company operates legally, adheres to established rules, and does not intend to mislead customers.
It is not difficult to verify the availability of a license. To do this, just visit the casino website and view the information in the footer of the main page - this is where all legal documents are usually located.
The random number generator is the basis of modern online gambling, ensuring the fairness and unpredictability of the game. Its operation is based on complex algorithms and hardware solutions that do not allow interference in the process of generating results.