Online casino random number generator

Electronic games like slot machines at retail casinos and online casino games use random number generators to generate random outcomes and to ensure fair play. A casino random number generator (RNG) is an algorithmic process designed to generate a sequence of random numbers that emulate events like cards being dealt or slot reels landing in a certain order.

Online casino games are all programmed with an RNG algorithm that dictates what the return-to-player (RTP) ratio on a game should be based on the rules and payouts featured in the game. Learn how online casinos use a random number generator on your favorite virtual casino games on this page and how you can use this knowledge to your advantage when choosing which games to play.

What to Know before you start Casino Gambling

It is important to note that all retail, online, and social casinos hold a long-term advantage over the player that is often referred to as the &#;house edge.&#; There is no way to overcome the house edge or to &#;beat&#; RNG casino games in the long run, but the random results generated in the short term add an unknown element and excitement to every session. Keep these tips in mind to ensure that you have fun while gambling at online or land-based casinos.

Many forms of entertainment cost money including going to a concert, sporting event or movie. Treat playing your favorite casino game like another form of entertainment. If you gamble with money you can afford to lose and enjoy the ups and downs of random outcomes, you should be able to play have fun within your budget whether you win or lose.

Set Limits and Stick To Them

Setting limits and sticking to them is crucial to enjoying gambling responsibly. As mentioned above, only gamble with money that you can comfortably afford to lose. Set daily and weekly limits on the amount of money you can gamble with, the amount of time you spend on online gaming, or trips you make to land-based casinos. These limits will help you to remain in control.

Take Advantage of Bonuses and Rewards

Retail and online casino operators offer generous welcome bonuses to new players and promotions or rewards programs for existing players as well. Unlike the casino random number generator that is always tilted in the house&#;s favor, these promos, including deposit matches and free spins, often have a player advantage, so be sure to take advantage of them.

Types of Random Number Generators

The two most common types of random number generators are the Pseudo Random Number Generator (PRNG) and True Random Number Generator (TRNG). Here&#;s a breakdown of how these two random number generation methods work.

Pseudo Random Number Generator (PRNG)

Pseudo Random Number Generators utilize deterministic algorithms to generate sequences of numbers that emulate randomness. These number sequences start with an initial value called a seed number that is used to generate numbers in large quantities that can be used to determine a random outcome. Even though the same seed number will always produce the same sequence, statistical randomness is achieved by using an RNG algorithm to shuffle potential seed numbers.

The speed in which PRNGs can generate large sets of random numbers make this RNG method the most commonly used one on RNG games. Using a strong initial seed number and periodically reseeding with unpredictable data work as safeguards for the PRNG.

True Random Number Generator (PRNG)

TRNGs generate random numbers by recording genuinely unpredictable physical processes in nature, such as thermal noise or radioactive decay. This method creates truly random results as the physical events being recorded and reported are completely random.

From a practical perspective, TRNGs are too expensive and slow for online casinos to use. The equipment required to record and interpret true randomness in nature is expensive, and the speed in which numbers are generated can not keep up with the large quantity of complex numbers needed to operate a modern slot machine or online casino game.

Popular RNG Software in Casino Games

Every reputable casino site uses software providers that deliver certified RNG games. Some examples of software distributors with strong reputations include:

• Novomatic (Popular Games: Book of Ra, Lady Luck&#;s Charm Deluxe, Sizzling Hot Deluxe)
• Playtech (Popular Games: Age of the Gods, Green of Lantern, Man of Steel)
• NetEnt (Popular Games: Dead or Alive II, Mega Joker, Starburst)
• RealTime Gaming (Popular Games: Aztec&#;s Treasure, Cash Bandits, Cleopatra&#;s Gold)

These software providers and others used by legal online casinos deliver modern slots and digital table games that are designed with fair and transparent return-to-player (RTP) ratios. A properly programmed casino random number generator can accurately predict a game&#;s long-term RTP, and reporting this information to players is a good practice that promotes fairness.

RNG Certification

RNG certification involves having a random number generation algorithm analyzed by an authorized organization and run through statistical tests to ensure accurate randomness in the numbers generated. Having RNG tools certified by an independent third-party company ensures fair gaming for both the casino and the player. Organizations that specialize in RNG authorization and certification include:

• eCOGRA (eCommerce Online Gaming Regulation and Assurance)
• iTech Labs
• GLI (Gaming Labs International)
• BMM Testlabs
• Gaming Associates

RNG Algorithms & Your Favorite Online Casino Games

With the exception of live dealer games that use physical cards, dice, and wheels, all of your favorite online casino games are powered by a random number generator. In this section, we&#;ll cover how these games use random number generators and what the house edge is on each of them.

Slots

• House Advantage: 2% &#; 15%

Both retail and online slot machines use RNG software to determine where symbols will land on the reels. Each symbol has a number assigned to it, and the random sequence of numbers generated when you press the &#;spin&#; button dictates the result of the spin. For example, if a &#;lion&#; symbol has the number one assigned to it on a three-reel slot and the RNG algorithm generates a spin, you will see a winning outcome of three lions on the payline.

Every slot has its own RNG settings that determine how often paylines will hit, bonuses will be activated, and so on. This creates a very wide range of RTPs, from as low as 85% on some in-person slots to as high as 98% on the best-paying online games.

Blackjack

• House Advantage: % &#; 2%

The objective of blackjack is to get closer to 21 than the dealer does without going over that number. Each card has a numeric value matching its number; face cards are worth 10, and aces are worth 1 or The RNG software for blackjack and other table games online is designed to emulate the true randomness of cards being dealt out of a real deck.

For example, the odds of the first card being dealt in a single-deck blackjack game are 1 in 52 since there are 52 cards in the deck. The same would be true online, with random numbers generating to give the ace of spades a 1 in 52 chance of being dealt when the &#;deal&#; button is pressed.

Baccarat

• House Advantage: 1% &#; %

Baccarat is a game that automatically deals cards to two designated spots, named the &#;Player&#; and &#;Banker&#;. The spot that gets closest to nine wins. Betting on a &#;Tie&#; is ill-advised with a house edge of over 14% on that outcome, compared to only % on the Player and % on the Banker.

Keno

• House Advantage: 25% &#; 45%

In keno, players pick between one and 15 numbers on a board of , and then 20 numbers are randomly selected. Players get paid based on how many numbers they correctly picked. The payouts in live keno are much lower than the actual odds, giving this game one of the highest house advantages on the casino floor. Online and electronic versions of keno have a lower house edge in the % range. These games use randomly generated numbers that all have an equal likelihood of being drawn.

Roulette

• House Advantage: % &#; 8%

Roulette is a game of chance in which players can make a variety of bets based on the number or color that the ball will land in after the roulette wheel is spun. The house edge is flat for every bet type in this game is dictated entirely by how many green zeroes are on the roulette wheel. One zero has a house edge of %, two is %, and three is %.

Lotteries

Lotteries are games in which a set amount of numbers is selected from a pre-determined pool of numbers, and players aim to accurately choose as many of the selected numbers as they can. The house edge on lotteries varies greatly based on a number of factors including the amount of numbers in play and the potential payouts.

Video Poker

• House Advantage: % &#; 5%

Video poker is an electronic version of five-card draw poker. Players try to make the best five-card hand possible, with the royal flush paying the best as the best possible hand. House edge varies depending on game rules like wilds and pay tables, but standard jacks or better video poker usually has a very high RTP of around % when played with perfect strategy.

Craps

• House Advantage: 1% &#; 16%

Craps is a dice game that lets players bet on many different potential roll outcomes, including the pass or don&#;t pass line. The shooter (the player rolling the dice) rolls to set a point between that isn&#;t 7, and then tries to roll that point again before rolling a seven (craps). They win on the pass line if they succeed. The house edge on the pass and don&#;t pass line is under % and can be backed up at true odds with no house advantage. RNG-based games of craps use their algorithm to mathematically emulate dice rolls with the same probabilities as real ones.

Casino Tips for Beginners

The best thing that you can do to give yourself a higher chance of winning at the casino is to play games with the lowest house edge (or highest RTP) possible. Consider card games like baccarat and blackjack that have a house edge of 2% or lower, or find a slot machine with an RTP of over 95%. This is much easier to do while playing on a casino gambling site, which often displays RTP on the info screen of the slot game you have chosen.

It is also helpful to understand the rules and strategies of the games you want to play before wagering real money on them. Some games, like slots or roulette, are completely luck-based, while others, like blackjack and video poker, have listed house advantages that are only accurate based on optimal play. Consider practicing for free on demo versions of these games offered by mobile casinos, which allow you to play with the same rules as the real thing.

And most importantly, always engage in responsible gambling. Set comfortable limits for yourself on how much money you are willing to lose, and take a break or end your session if you feel you are struggling with control or aren&#;t having fun.

Random Number Generators and Online Slots

The RTP percentages listed on slot machines online is dictated by a casino random number generator algorithm that is accurate and fair in the long run. A slot game&#;s volatility will dictate how frequent each winning combination is and how large the payouts are, but over time, the return to player will fall in line with the game&#;s listed RTP. Below are some popular online slots with player-friendly RTP percentages.

RNG Slot Games With a High RTP

• Bloodsuckers &#; %
• Starmania &#; %
• Medusa Megaways &#; %
• White Rabbit &#; %
• Rainbow Riches &#; 96%
• Double Diamond &#; %

How to find the best Casino Games Online

Online gambling brings the fun and excitement of casino gaming right to your computer or mobile device. Registering for an account is quick and easy, and new players can receive lucrative welcome bonus offers that include deposit matches in casino credits or additional free spins. Existing players enjoy plenty of perks as well including exclusive promotions and rewards programs that allow you to earn points and casino credits while playing your favorite games.

Head to your casino of choice via the offers below:

Why Should I Try Gambling at Casinos?

Still wondering if you should give in-person or online gambling a try? Here are five reasons you may enjoy it.

Variety of Games

Casinos have hundreds of slots and dozens of different table games available. With so much variety to choose from, you are bound to find some favorites to enjoy on a regular basis.

Excitement of Wins

While it&#;s true that all casino games have a house advantage built into them that gives the casino the edge in the long run, anything can happen in the short run. The thrill of chasing and hitting a big win is exhilarating.

Comradery With Other Players

Most table games are designed with all of the players at the table playing against the dealer. Winning alone is fun, but making friends and cheering on wins together at the table can be even better.

Interacting With Friendly Dealers

Even though dealers are technically the enemy in most casino games, the reality is that most of them want you to win and have a good time, as that makes their job easier and they receive more tips. Joking around with a friendly dealer can add a lot to the experience.

Online Casino Convenience

Thanks to online gambling, you no longer have to drive to a casino, find parking, or deal with any of the other hassles of visiting retail casinos to enjoy the gaming experience. And with live dealer games allowing you to chat with dealers and fellow players, you won&#;t even miss out on the comradery and interactions highlighted above.

Frequently Asked Questions about Random Number Generators

Want to learn more about the random number generators? Read these common questions and answers we&#;ve compiled below.