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Online slots don’t pay out massive jackpots very often, so one may wonder about the fairness of these games. The question of whether online slots are rigged has crossed the minds of countless slot players, and here we take a closer look at this issue.
At Gambling ‘N Go, our casino experts will outline whether online slot games are rigged, as we’ll talk about how online slots work and share the usual myths and facts on this common concern. Just to be clear, online slot games are not rigged, so read on to find out more.
- Computers run modern online slots and have video displays with moving symbols and visual effects.
- Most online slots come with 5 reels, but there are slot games with up to 9 reels, enabling millions of possible symbol combinations.
- Reputable online software providers ensure their slot games are licensed and tested, ensuring there is no rigging and the result from every spin is entirely random.
How Do Online Slots Work?
Online slots are based on something called an RNG – or a random number generator that is programmed to display random outcomes based on a starting point.
Unlike slot machines that used mechanical reels with symbols and relied on gear mechanisms for the spin, the online slot games are run by a computer, and a video screen displays the moving symbols along with accompanying visual effects.
We have a full guide on how to play online slots, so here is just a short reminder: After you place a bet, you click on the spin button on the screen, and you watch the symbols as they spin on the screen. Although your direct input is limited, you can still use a slot machine strategy to win online and improve your odds.
Today, most slot games have 5 reels, but there are those with 6, 7, and even 9 reels. The computer decides on the outcome, and there are millions of possible combinations for each slot, but only a few are winning, and these are known as paylines.
Credit: 20Bet
✅ Importance of RTP for Online Slots
Online casinos are in the business of providing entertainment and a chance for players to win money. However, the main business of online casinos is to make money, which is done cleverly, by a built-in advantage in favor of the house called the house edge.
Different casino games have different house edge, and when we discuss slot games, this is referred to as the Return To Player or RTP for online slots. It refers to the percentage of the estimated payback the player stands to win. For example, if a slot has a high RTP slot of 97%, they stand to possibly win $97 for every $100 they bet, while the $3 difference is the house edge or the casino’s take.
RTP is important for online slots as it gives you a fair representation of the fairness of the online slot game, so the higher the RTP percentage, the better the possible payout.
However, you must note that this is not as clear-cut as it sounds, as it is calculated over the course of many spins. This means that someone may only win $50 from the $100 he has already bet on slots, while another may win a jackpot from a single $1 spin. You can use a slot machine calculator to compute the payouts, odds, and RTP for a specific slot you plan to play.
How Do RNGs Work?
Now, back to the intricate workings of the RNGs. The RNG, or Random Number Generator is a complex mathematical formula that is programmed in a way that displays a random result based on a set system. It means the software creators set up the rules of the game and a starting number, leaving it to the RNG to produce a random outcome for every spin.
The RNG does not have an internal memory, meaning it is not “aware” of previous losses or wins, as it only generates a set of random numbers every time. We can conclude that the online slot RNGs ensure all the players have equal chances to win with every spin.
How Independent Testing Laboratories Ensure Slot Fairness
Independent testing labs play a key role in making sure online slots are fair. They check casino software to confirm there is no tampering with that Random Number Generators (RNGs) and that they work as they should, plus validate that Return-to-Player (RTP) rates match what is advertised. By running thousands of test spins, these labs make sure the results are accurate and that the games follow all rules.
Well-known labs like eCOGRA, iTech Labs, and GLI give certificates to software providers and online casinos, showing that their slots have been carefully tested and really do produce random outcomes. These checks also include bonus features, jackpot payouts, and how consistent the winnings are.
While testing labs do not control the results of spins, their approval means an independent party has checked a slot and is safe to play. When evaluating an online casino or game developer, look for a testing lab seal. This mark shows the game has been reviewed and helps players feel confident that the game is fair.
Credit: Jackpot City
✅ Importance of Software Providers
We briefly mentioned software providers – these are the companies that design and produce the thousands of different slot games we can play online. These are specialized software companies that develop new slot games and then sell or license these to different online casinos. It is how you can find the same slot games at various online casinos and how some progressive slot games accumulate massive progressive jackpots.
The importance of the software provider to the fairness of online slots is critical, as each company has its own style, specific strengths, and weaknesses. You’ll find some slots that have better graphics and visual effects and incredible accompanying music, but others that have poorly executed visual appeal.
We talk about this because it is advisable to look for reputable game providers that constantly deliver fair slot games and have not been related to any scandal. Most of the quality software providers also adhere to third-party audits and provide slot games with impressive themes and graphics, reel symbols and paylines, betting limits, and the extra perks that come with it.
When I started playing slots, I often felt cheated during long losing streaks, even on fully licensed and audited games. But in reality, there was no rigging, only my frustration because I didn’t understand the natural effect of volatility and random variance. What I had to learn was that high-volatility slots may go dozens of spins without a significant win, while low-volatility slots deliver frequent small payouts. Psychology amplifies these effects; I noticed losses more than wins and assume patterns exist. However, over time, I learned that I can trust licensed and audited slots and that the results consistently match the published RTP.
Online Slot Facts
Now that we have covered the basics and explained that online slot games are not rigged, here are some of the critical facts related to online slots:
- Slot Outcomes are Random – the online slots are governed by Random Number Generators, which ensure that every spin has a completely random outcome
- Casinos Don’t Rig Slot Games – trusted online casinos don’t rig their slot games because they want to attract more customers and provide quality user experience, as this is the way online casinos make a profit
- Online Slots and RNGs are Audited – reputable online casinos undergo independent testing from third-party agencies like the IAGR and governmental regulatory bodies like the MGA (Malta Gaming Authority) and the UK Gambling Commission. Also, the software providers undergo scrutiny from regulatory bodies and relevant authorities
Common Online Slot Myths
It is very common for slot players to have some beliefs about the slot games they favor, but most of these are simple superstitions and not based on truth. Here are the commonly believed slot myths:
- Hot and Cold Slot Games – there are no hot and cold slot games, as the RNGs are unpredictable, and there is no link to the outcome of a previous and subsequent spin, meaning each outcome is random
- Loose Slot Games – many players believe that a particular slot game will pay out soon because it hasn’t paid out for a while. This is a common myth, as the outcome is entirely random
- A Slot Must Pay After a Dry Spell – this myth is based on the “gambler’s fallacy,” which states that a slot should pay after several losing spins or will go on a losing streak after a big win
- Bonus Features Are Rigged – slot bonus games follow the same RNG principles as base spins. They’re not pre-programmed to favor the online casino.
- Higher Bets Guarantees Wins: wagering more increases the potential payouts, not your odds of winning.
Credit: Nomini
How to Find Fair Online Slots?
Now you know that online slot games are not rigged, but you have the same chances of winning with every spin. Let’s talk about the most important things to know on how to find fair online slots to play:
- Online Casino License – always check the online casino’s license and only join an online casino that publishes its licensing information readily on its website
- Casino Contact and Relevant Information – we recommend you only join online casinos that have active contact information like a physical address, a working telephone number, and active and readily available customer support in place
- The RTP and House Edge – check the house edge/RTP of the online slot game you want to play. We recommend you look for slot games that have over 90% RTP; try to avoid franchise or branded slots as these have a lower RTP because of the higher licensing fees the software provider and online casino have to pay
- Reputation and User Testimonials – check the reputation of the online casino and try to find user testimonials about the slot game you are looking to try, as these provide first-hand insight from the casino and the chosen slot game
- Read Online Reviews – check the online reviews for online casino platforms before you join these, as most of these, like our list featuring the best online casinos, offer an in-depth overview of the casino and its offerings
What to Do If You Suspect a Rigged Slot
Even with licensed casino sites, you may occasionally feel something is “off.” However, having bad luck, which results in a string of losses, doesn’t automatically mean the game is rigged. Still, if you have suspicions about the fairness of the outcomes, here’s a practical step-by-step guide to protect yourself and how to react if you suspect unfair outcomes:
- Document Everything: Take screenshots of the game name, timestamps, bets, and outcomes. Note any unusual behavior, like erratic payouts or bonus triggers.
- Contact the Online Casino: Use the official email for complaints or reach out via live chat. Submit your evidence clearly and politely, and keep a record of all correspondence with customer support.
- Inform the Responsible Regulatory Agency: If the online casino doesn’t offer a good explanation or resolve your issue, contact the regulator listed on their license and provide your documentation for review.
The Future of Slot Fairness
Blockchain technology is making online slots more transparent with provably fair systems. Unlike traditional games that use random number generators, provably fair slots let you check each result yourself. Cryptographic hashes confirm that outcomes have not been changed by the casino.
Every spin creates a unique hash linked to the blockchain, which helps ensure fairness. This means you do not have to rely only on third-party audits and can trust the integrity of the game. While this technology is still new and found mostly at a few crypto casinos, it is likely to become more common in the future, giving players more confidence that every spin is fair.
FAQs
Can online slot games be manipulated by the casino or by a user?
It is a theoretical possibility that someone could hack and manipulate or trick an online slot. However, online casinos have protective measures and proper security protocols to protect against manipulation.
Do some online slots pay more often than others?
Yes, some slots pay more often than others, but these are not rigged slots. Instead, these slot games have a low volatility, which means they will usually pay lower prizes. On the other hand, there are slot games that pay less often but pay bigger payouts, which are known as high-volatility slots.
Why is RTP important for online slots?
The RTP in online slots showcases the percentage you stand to win for a set amount you will bet. It is another way of representing the house edge or the fee the casino charges from each placed bet. In other words, a slot game with 98% RTP means that for every $100 you bet, you stand to win $98, while the $2 is the casino’s profit.
Do online slots have a specific time when they offer favorable odds?
There is no specific time when an online slot game offers more favorable odds. It is because the outcome of each slot spin is governed by an RNG, which ensures a random result every time. You can play during peak hours or off-peak hours, and your winning chances will not be affected.
Do online casinos rig the online slot games for profit?
No, reputable online casinos usually don’t rig the online slot game for profit. Instead, online casinos earn the profit as a percentage (house edge) from the bets the players place playing slots and other games. It means the more players join and play slots, the better the casino’s profit, so they don’t need to rig the slots and other casino games.








