Online Slots
| Updated: Online Slots and What They Can Offer to Gambling Aficionados
Slots have been a favorite among players ever since they were first introduced to the public. The appeal of this type of casino game is evident, as there are no complex rules for players to follow, making slots a suitable option for casino novices. The outcome of each spin is completely random, meaning virtually no decision-making is involved in playing the game. Moreover, since everything is based on luck, players are not required to have any prior experience or skill.
All these factors have further contributed to the popularity of slots today. This type of game is so popular that it appears in the catalogs of all reputable online casinos, where players can choose from hundreds of enticing titles, each offering a unique theme, different betting limits, and additional features. Online slots offer greater convenience and flexibility, as the titles are typically available in both desktop and mobile formats. Given their overwhelming popularity, this article explains how online slots work, what information is available in the paytable, how the RNG determines the outcome of a spin, and what slot variants players can expect to find in the catalogs of online casinos.
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Random Number Generators in Online Slots
Decades before online casinos arrived on the scene, slot machine return percentages were determined by the number of symbols per reel and the payouts for winning combinations. However, this is no longer the case, thanks to the introduction of virtual reels and random number generation. All online slots use random number generators (RNGs) to determine spin results.
An RNG relies on complex, lengthy algorithms to produce outcomes and starts with an initial seed number. The process of random number generation is lightning-fast, with the generator producing hundreds of numbers every second. It never stops running, even when the slot game is not being played. Some players think the RNG can manipulate spin results, but this is untrue, especially if the games have passed internal and external fairness audits.
The RNG’s sole purpose is to produce random numbers. It has no knowledge of how the game uses these numbers or whether you are winning or losing. Furthermore, the generator uses a complete set of numbers in every round, meaning all possible combinations can occur on each spin.
Online Slots Are Preprogrammed and Random at the Same Time
Some players question the randomness of slots because the games are preprogrammed. They wonder how both can be true. What they overlook is that all slots have programmed payback percentages, while the outcomes of individual spins remain random. These programmed return percentages work similarly to those in land-based table games such as roulette, baccarat, and craps.
All these games arrive at their payback percentages over the long term because of the way their odds are structured. Game manufacturers and slot operators set the odds so that high-paying combinations hit less frequently than low-paying ones, and losing spins occur more often than winning spins. In classic slots with only three reels, this leads to more losing rounds than winning ones.
In video slots with five reels, players may experience more outcomes in which the payout is smaller than the initial wager than larger payouts that exceed it. Software developers merely set the odds of slots; the random number generator does the rest. The way random numbers are mapped to the symbols and the number of values used varies from one online slot to another.
Types of Random Number Generators
Random number generation is crucial to cryptography, where randomness generally refers to the absence of a predictable pattern or order. Random numbers should be uncorrelated with one another and uniformly distributed. There are two main types of random number generators: true random and pseudorandom. Most online casinos use pseudorandom generators to determine the outcomes of their games, including slots.
Pseudorandom number generators use complex mathematical algorithms to simulate random results. The algorithm calculates the numerical sequences for the symbol combinations appearing on the reels, so the outcomes cannot be considered truly random by definition.
Pseudorandom numbers follow repeatable patterns of recurrence, but these patterns are extremely long. Players cannot identify the patterns, so the results on the screen appear completely arbitrary to them. One would need to know the original seed number, the exact algorithm, and its internal state to predict the next number sequence and its corresponding symbol combination.
The seed number is the initial starting point of the algorithm and often consists of thousands of digits. Sequences of complex mathematical calculations generate the numbers that produce the final outcome of the spin. Furthermore, the algorithm determines which symbol combination will appear on the screen at the exact moment the player touches the Spin button.
In contrast, true random number generators rely on natural occurrences to create arbitrary number sequences. Here, the randomness stems from physical phenomena such as radioactive decay or atmospheric and thermal noise. The process is expensive and time-consuming, which is why most online slots rely on pseudorandom number generation.
Special third-party testing agencies, such as eCOGRA, audit casino gaming equipment to ensure the outcomes are fair to players. They examine gambling sites’ servers to ensure the random number generators produce appropriately random results that align with the slots’ expected theoretical returns.
Playing Online Slots
As there are no major differences in the rules, players who have enjoyed slots in brick-and-mortar venues should have little difficulty understanding how the games work online. The objective is to collect a payout. To win, a player must land a combination of matching symbols on the reels, which are the vertical sections that rotate when the player clicks the Spin button.
With most online slots, identical symbols need to line up on an active payline. The number of paylines a given online slot offers indicates the number of possible winning combinations in the game. This means that the more paylines there are, the greater the player’s chances of landing winning combinations of matching symbols on one or more lines.
At online casinos, players can choose from a wide variety of titles. Some have fixed paylines, making it necessary to bet on all of them with each spin. Others have adjustable paylines, allowing slot fans to select which lines to bet on. Players should remember that only active lines pay for winning combinations. If identical symbols land on a deactivated payline, meaning no bet has been placed on that line, the combination will not pay.
Another point to remember is that the higher the coin denominations a game uses, the greater the slot’s volatility may be. In other words, online slots with higher denominations may hit winning combinations less frequently, but the payouts can be more substantial. When choosing an online slot, players should consider the overall size of their bankroll for the betting session.
Before playing, you must choose how much to bet per spin. There are two factors to consider: the number of credits or coins per payline and the real-money value of one credit or coin. Keep in mind that betting more credits per line will do nothing to increase your chances of winning.
Finally, players must select which paylines to activate, provided the slot features adjustable paylines. It is important to remember that betting on fewer paylines will reduce the probability of landing winning combinations of matching symbols. There is no need to keep track of the paylines, as winning combinations are displayed on the screen after each spin, while the total amount won is shown below the reels.
The outcome of each spin is determined by a program called a Random Number Generator. It generates random numbers that correspond to the symbols on the reels and performs complex calculations based on lengthy algorithms.
Most Widespread Types of Online Slots
One of the greatest advantages of playing slots at online casinos is the wider range of titles available. The games offered by established online casino operators are extremely diverse in terms of themes, storylines, betting limits, and special features.
However, slots are usually classified into two major categories, depending on the number of reels incorporated into the game. Classic slots are the simpler variant, as they feature only three reels, or three sections that rotate vertically. Classic slots typically offer limited betting options because there are fewer paylines to activate and bet on. The oldest classic slots have just one payline.
However, it is also possible to find classic slots with three or even five paylines. Because they are simpler, classic slots are considered suitable for inexperienced players, as their interfaces are easier to understand. It is also important to mention that 3-reel slots tend to pay out less often, but the winnings they offer can be more substantial.
The second major category consists of the so-called video slots. These have five reels and, in many cases, feature between nine and one hundred paylines, sometimes even more. Depending on the slot title, the paylines are either fixed or adjustable. Video slots usually offer extra features that can increase their payout potential. These include bonus games, special symbols such as scatters and wilds, and bonus rounds with free spins.
Many 5-reel slots feature high-quality graphics. Once you load such a game, you will immediately notice how crisp and vibrant the graphics are. A large number of 5-reel slots also feature animated symbols and open with short animated clips that introduce players to the game’s general theme. Authentic sound effects can further enhance the gameplay experience.
The interface is usually user-friendly, so even less experienced players can quickly understand it. Some 5-reel online slots offer greater entertainment value through their 3D visuals. The rules coincide with those of standard slots, but the key difference is that games in this subcategory have more detailed, three-dimensional graphics and presentation.
Players will also be able to find video slots with progressive jackpots attached to them. These are among the most sought-after titles at online casinos because they offer large prizes that increase incrementally with each bet players make. However, slot fans are often required to wager the maximum amount allowed per spin to qualify for the jackpot. Because of this, progressive slots may have higher volatility, with regular wins occurring less frequently.
Online Slot Payouts and Paytables
Before placing real-money bets on any online slot, players should take a quick look at its paytable. It contains useful information about the game’s winning combinations and the number of coins paid when a given combination lands on the reels. The number of coins won usually depends on how many identical symbols land on the paylines. Some symbols offer greater payouts than others. In many slots, high-value playing cards are commonly used as lower-paying symbols.
Note that in many online slot titles, paylines pay only if identical symbols land in succession, starting from the leftmost reel. Many slot novices mistakenly believe the payout is directly related to the total amount they have bet. However, this is not the case. For instance, suppose a player bets one coin or credit worth 0.10 on ten paylines, making the total bet amount 1.00. The payout for five identical symbols landing on any active payline is listed as 100 in the paytable.
If the player lands those five symbols on a line, they will collect 100 credits for that payline because they wagered one coin on it. However, the amount of money the player receives is also related to the coin denomination used. In this case, the hypothetical player has bet one coin per line and will collect $10 on this spin, as the 100 credits for five matching symbols on the payline are multiplied by the coin denomination of 0.10.
In online 3-reel slots, the paytables differ from those of multiline video slots and are generally simpler. You will see the symbols listed in descending order, starting with the highest-paying icons. Suppose the highest-paying symbol in a fruit-themed 3-reel slot is the cherry, and you need three cherries on the payline to collect 100 coins. If you bet two coins per spin, you will collect 200 coins in that round. If you bet three coins, your payout will amount to 300 credits.
Extra Features of Online Slots
Convenience and diversity are not the only reasons why so many slot fans choose to play their favorite games at online casinos. Online slots have plenty of extra features that can affect payouts and enhance the entertainment value of the available games.
Speaking of games, many online slots feature additional bonus games, which load on a separate screen and usually offer guaranteed cash prizes, free spins, or multipliers applied to the winnings from the last spin. These bonus games differ from one title to another. In many cases, players are required to pick from several hidden items, such as boxes or treasure chests, with each item containing a specific credit amount. Bonus games are triggered by landing several identical bonus symbols on the reels.
The simplest type of bonus game is the so-called Gamble feature, which is most commonly found in BetSoft slots. It enables players to double or even quadruple their winnings from the last spin by playing a coin-toss game or correctly guessing the color or suit of a face-down card.
Wild and scatter symbols are among the most common slot features. Wild symbols play the same role as jokers in a deck of cards, as they can substitute for all other symbols, except scatters and bonus symbols, to help players land more winning combinations on activated paylines.
Unlike the wild symbol, the scatter does not necessarily need to land on an active payline to trigger a feature, such as a round of free spins or an interactive bonus game. Most online video slots have a multiplier feature that boosts players’ winnings by a predetermined amount. Multipliers can double, triple, or quadruple players’ payouts on a lucky spin, but some online slots offer even larger multipliers of 100x or 1,000x the win amount.
Playing Online Slots on the Go
Spinning the reels from the comfort of one’s home is convenient, but mobile compatibility provides even more flexibility. Most reputable online casinos are compatible with mobile devices that run operating systems such as iOS, Windows Phone OS, and Android. This enables slot fans to play their favorite games from virtually any location at any time.
What is more, respected software providers have adapted their most popular slot titles for mobile devices such as tablets and smartphones. This means players can enjoy crisp graphics suited to higher-resolution mobile screens. The games are optimized to fit the smaller displays of smartphones and tablets.
Other than that, players will notice few significant differences in gameplay and features. The interfaces of mobile slots are similar to those of desktop games, and players may also have the option to test titles in practice or demo mode.
Choosing Which Online Slot to Play
There are several factors to consider before you begin spinning the reels of online slots for real money. Graphical presentation may not be the most important factor, but it should not be overlooked. Players should also consider the software provider that developed their preferred online slot.
Choosing titles from key industry names such as Microgaming, Playtech, BetSoft, NetEnt, and IGT can be a good idea, not only because their slots are skillfully animated but also because these software suppliers are well known for their reliability.
Collecting a worthwhile payout is what all slot fans hope for. To assess a game’s theoretical returns, players should always check their preferred slot’s payout percentage in advance. The payout percentage denotes how much of the money wagered on a given slot is expected to be returned to players over the long term.
For instance, NetEnt’s Diamond Dogs slot has an average payout percentage of 96.50%, meaning the game is expected to return $965 on average out of every $1,000 wagered. However, it may take hundreds of thousands of spins for the observed player return to approach the listed percentage. Even so, it is advisable to choose games with higher payout percentages.
Volatility is another factor to consider. Some slots have higher volatility, also called variance, while others have lower volatility. Why is this important? Volatility may indicate how long your bankroll will last when playing a given online slot. Slots with higher volatility may exhaust players’ bankrolls more quickly, as winning combinations land on the paylines less frequently. Players on a budget may prefer slots with lower volatility, where payouts are smaller but winning combinations occur more often.
Finally, when choosing an online slot, it is a good idea to check how many paylines it has, whether they are fixed or adjustable, and which coin denominations are available. Slots with lower coin denominations typically allow smaller bets, while those with higher denominations require larger stakes.