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Slot Machine Database

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Slot Machine Database

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Making these lists is very time consuming so bear with us while we work our way through making new ones and keeping existing ones up to date!

Everyone is always looking for loose slots so we have also listed dozens of the loosest online slots further down this page!

Make sure you check the RTP at the casino of your choice before you play. If it is hidden ie if it is not showing but other casinos do show it then do not play this slot here.

If the rtp value is significantly lower at one casino then do not play it here. We have been and will continue adding more and more RTP pages; There are of course a number of slot providers who have changed names over the years so these are mentioned separately as you will see.

The top 10 slot providers are also listed in the main menu for easy access. For this page we decided to collect together dozens and dozens of the highest paying slots loosest online slots which have an RTP of This has been a huge amount of work so it is likely there will be some high RTP slots that we have missed from the list.

Hopefully though this list will be extensive enough to cover nearly all of your needs! What we have excluded are slots which have more than 1 RTP setting depending on game play style, bet size or line numbers.

Also excluded are slots which the individual casinos can choose from different pre-programmed RTP settings. Take Care: Please note that there can occasionally be variance in the theoretical return to player based on the number of lines you are playing or the selections you make.

The RTP percentages are also calculated over millions of spins rather than hundreds. The data tables should therefore be only taken as a guide.

The problem many rookies make is after hitting a big win on one slot, they avoid this slot but use their winnings to play bigger stakes on other slots within the same online casino.

Or by using the winnings from one slot to try and chase previous losses on another slot. For all intents and purposes, all individual slots within an online casino can be viewed as one giant slot, just with various different interfaces.

Online slots and casinos should never be compared to land based slots and casinos. Despite what we have just explained, you still need to differentiate between the individual slots within any online casino.

While the RNG will generate a winning or losing number for all the slots, the individual payouts can differ greatly. You can find out the theoretical payout percentages a.

RTP for most slots via one of the menu, help, question mark etc buttons within the slot games themselves. We are fans of the Marvel Jackpot slots provided by Playtech.

We know that a few casino sites are anti-Playtech and anti-Marvel the cynic in us says this may well be because Playtech casinos generate very little revenue for affiliates but as with any form of gambling you need to be aware of what you are doing We have discussed the Marvel slots in more detail in a later article.

Playtech casinos all list the same RTP for a particular slot, even if they are not even part of the same casino chain. And Playtech makes these RTPs very easy to find and compare.

For Net Ent slots, another major player in the online casino game, you click on the question mark to find the relevant information.

On netent. Progressive jackpots usually have lower RTPs to non-jackpot slots because a small percentage of every spin is set aside for the jackpot s.

Another valuable note is that if there are two variants of a Playtech Marvel Jackpot machine, it appears that the 50 line version always has a far lower payout percentage than the 20 or 25 line version.

Unlike land based casinos, the online casino is able to offer the punter you and me far better return to player percentages due to the lower overheads they face.

Before we continue we will put this into perspective by showing you a little info graphic from USA land based casinos:.

If you want to have the best chance of winning at online slots, you need to take a few essential steps:.

The RTP is the term that online casinos use to describe the percentage of all the wagered money a slot machine will pay back to the player over time.

In other words, how much of the money that is put in, is given back to player? The RTP is always calculated over the long term so all variance highs and lows is evened out.

The higher the RTP, the more favourable the odds are for you as a player and the bigger the chance that you will actually win on that particular slot.

Most slots have the RTP listed in their games rules or pay-tables. Sometimes you have to look for it, but most software providers are happy to provide the RTP.

If you cannot find the RTP, we advise you to consider playing a different slot. Unfortunately, there are no slots that will guarantee that you will always win.

Your wagering requirements are 35x Bonus using 21 Prive Casino as an example. If the slot gives you exactly Obviously this example is assuming everything plays exactly according to RTP and such a simple example would probably be frowned upon by some casinos but the point is valid that choosing carefully which slots to play has a serious impact on your potential fortunes.

Big name or franchised slots as a rule have a low Return To Player. Game developers have to pay big sums of money to be able to use the name and images for franchised titles such as The Terminator, Jurrasic Park or The Marvel range of jackpot slots from Playtech.

These fees have to come from somewhere, so in the end the player pays for them through a lower RTP. In our top 15 list of Highest Paying Slots, you will mainly find Netent, Thunderkick and to a lesser extent Microgaming titles.

Progressives slots generally have the lowest RTP percentages, as that percentage includes all the big progressive jackpot amounts, so the RTP on the base game is significantly lower.

If you want to get some good play time, avoid progressive slots with particularly low RTP percentages. There are two exceptions to this rule: 1.

There are two companies who are hopefully setting a bit of a trend, and that is towards transparency, clarity and consistency in the Return To Player percentages.

Both companies set all their slots to the exact same RTP. You know exactly what you are going to get. We would love all slot development companies to follow suit rather than having the confusion of a different RTP for each and every slot.

In an ideal world we have worked out that our perfect RTP fair to both developers, casinos and players would be If one of the really big slot studios adopts this model we have suggested this to Playtech already then we expect the ball to really start rolling and be adopted by the others.

For Playtech it would require a huge leap of faith as a great many of their slots are tighter than a ducks arse hind quarters. For others it would require a slight raise on all slots.

After comparing pay out percentages of thousands of different slots, we have compiled this list of 28 of the highest paying slots that you can play in an online casino.

This list is not the be all and end all and an exact top 28 but it is pretty close! But equally it has to go the other way and you can run into very nice winning streaks.

Rival slots are a lot of fun and this bright and colourful slot is no exception, especially considering the mammoth RTP on offer here.

You are looking at long streaks of getting nothing much in return, even free spins often paying nothing much. But occasionally it spins in a hefty feature win or a bunch of spaceship wilds together during base play and all suddenly feels well again in the universe!

MultiSlot are a very small name casino game provider with a reasonable sized portfolio of slots and casino games. The slots though are in general very basic.

Most feature simple free spins or a sort of pick me bonus. What these slots lack in excitement they more than make up in value for money and there are a lot of slot connoisseurs who really seek out the highest paying MultiSlot games for their strategy sessions.

Chess Mate being the highest paying of their slots is the only one to make it into our list here but if you visit our massive RTP database you will find a whole host of MultiSlot slots that are extremely high in value.

This somewhat strange Swedish pokie developer makes some of the quirkiest and best slots on the UK gaming market. Trigger the feature and you will get free spins with expanding wilds and big pays.

Ragnarok is a Genesis Gaming slot you will find under the hood of Microgaming casinos. We are not big fans personally as it feels a bit bland and clunky and the autoplay feature only goes up to 25 spins a time.

Blood Suckers is the second of many Netent slots in our top 25 list. The game play is fast and fun and there are two different bonus features: a free spins bonus and a pick em bonus where you open coffins and kill vampires for big credit wins.

This slot does look great and plays fast and smooth so we have no complaints thee at all. Future Fortunes is a simple but very effective Rival slot with a mystic theme featuring Tarot Cards, an oracle, a magic 8 ball, the all seeing eye the eye in the pyramid , etc.

Especially for USA slot players this is definitely a slot to dig out and spend some time with! This is a slot game which actually has a number of different slots and mini games in it and you proceed along a path doing different challenges in different areas as you go.

These iSlots are hugely enjoyable whilst also being frustrating if you get caught before completing the entire mission. I think that interactive slots are going to become more and more popular once some of the other slot makers start taking notice.

I suppose something like Battlestar Galactica from Microgaming could be considered an iSlot though not on the same level of Rivals iSlots.

These are sadly very basic indeed though the graphics are usually pretty nice to look at. Kings of Chicago is a unique slot from Netent that combines video poker with a regular slot machine.

Instead of traditional slot symbols there are card symbols on the reels. Landing winning poker combinations will give players great payouts.

Jokers pay out double and there is an exciting free spins feature are also exciting elements of this somewhat lesser known 5 win line game.

One of the most recognisable Betsoft slots and the highest paying to boot. This is a stunning looking and sounding 3d slot which is feature packed.

If you have never played it or are not a fan of Betsofts slots3 series then just give this one a chance and I am sure you will love it.

It is a lot of fun and being good value for money really makes it one to add to your favourites. Reel in the cash, also by Cryptlogic comes in two flavours, one with a These Cryptlogic slots are very very basic indeed, very old school and hard to find these days.

Worth a few spins due to their house edge if you do find them though. Yes it has 10 win lines, pays both ways, it has similarities in the look and the name.

But it is a whole different ball game. There is a free spins bonus round for a start, and the house edge is much nicer on Starmania.

Magicious is a fun and straightforward slot with 10 win lines, expanding wilds that stay sticky for one turn and frantic game play.

It is basically a faster and prettier version of Starburst with a much higher return to player: a very impressive A great slot for getting some fast big wins and then getting out.

This pays better but it also has so much charm too. I could have listed one of 3 slots by Betsoft at Awesome graphics and animations as you have come to know and love from Betsoft and with loads of wilds and bonus features.

It is a whole heck of a lot of fun. The main bonus, that can pay out monstrous amounts, is a play till you win type bonus.

The longer you play, the the closer you will get to that lucrative Sin Spins bonus. Three or more Zodiac symbols will trigger the free spins bonus and the expanding wilds on reels 2, 3 and 4 can pay out huge wins in the base game.

The totally absurd and wacky Mexican themed Esqueleto Explosivo by Thunderkick is a one of the best online slots around. Everything revolves around exploding skeleton heads, increasing multipliers and mucho, mucho fun.

The Golden Elvis symbols, complete with cool sunglasses, are wild and will help you to get those huge multipliers of up to 32x!

Sometimes it is nice to play an old fashioned looking online slot and with such a high RTP, Retro Reels is a very good choice.

Fortune Coin Co. Depending on the machine, the player can insert cash or, in " ticket-in, ticket-out " machines, a paper ticket with a barcode , into a designated slot on the machine.

The machine is then activated by means of a lever or button either physical or on a touchscreen , which activates reels that spin and stop to rearrange the symbols.

If a player matches a winning combination of symbols, the player earns credits based on the paytable. Symbols vary depending on the theme of the machine.

Classic symbols include objects such as fruits, bells, and stylized lucky sevens. Most slot games have a theme, such as a specific aesthetic , location, or character.

Symbols and other bonus features of the game are typically aligned with the theme. Some themes are licensed from popular media franchises , including films, television series including game shows such as Wheel of Fortune , entertainers, and musicians.

Multi-line slot machines have become more popular since the s. These machines have more than one payline, meaning that visible symbols that are not aligned on the main horizontal may be considered as winning combinations.

Traditional three-reel slot machines commonly have one, three, or five paylines while video slot machines may have 9, 15, 25, or as many as different paylines.

Most accept variable numbers of credits to play, with 1 to 15 credits per line being typical. The higher the amount bet, the higher the payout will be if the player wins.

One of the main differences between video slot machines and reel machines is in the way payouts are calculated. With reel machines, the only way to win the maximum jackpot is to play the maximum number of coins usually three, sometimes four or even five coins per spin.

With video machines, the fixed payout values are multiplied by the number of coins per line that is being bet. In other words: on a reel machine, the odds are more favorable if the gambler plays with the maximum number of coins available.

Multi-way games may be configured to allow players to bet by-reel: for example, on a game with a 3x5 pattern often referred to as a way game , playing one reel allows all three symbols in the first reel to potentially pay, but only the center row pays on the remaining reels often designated by darkening the unused portions of the reels.

Other multi-way games use a 4x5 or 5x5 pattern, where there are up to five symbols in each reel, allowing for up to 1, and 3, ways to win respectively.

A variation involves patterns where symbols pay adjacent to one another. Most of these games have a hexagonal reel formation, and much like multi-way games, any patterns not played are darkened out of use.

The latter are typically known as "high limit" machines, and machines configured to allow for such wagers are often located in dedicated areas which may have a separate team of attendants to cater to the needs of those who play there.

The machine automatically calculates the number of credits the player receives in exchange for the cash inserted. Newer machines often allow players to choose from a selection of denominations on a splash screen or menu.

A bonus is a special feature of the particular game theme, which is activated when certain symbols appear in a winning combination. Bonuses and the number of bonus features vary depending upon the game.

In other bonus rounds, the player is presented with several items on a screen from which to choose. As the player chooses items, a number of credits is revealed and awarded.

Some bonuses use a mechanical device, such as a spinning wheel, that works in conjunction with the bonus to display the amount won.

A candle is a light on top of the slot machine. It flashes to alert the operator that change is needed, hand pay is requested or a potential problem with the machine.

It can be lit by the player by pressing the "service" or "help" button. A coin hopper is a container where the coins that are immediately available for payouts are held.

When a certain preset coin capacity is reached, a coin diverter automatically redirects, or "drops", excess coins into a "drop bucket" or "drop box".

Unused coin hoppers can still be found even on games that exclusively employ Ticket-In, Ticket-Out technology, as a vestige.

The credit meter is a display of the amount of money or number of credits on the machine. On mechanical slot machines, this is usually a seven-segment display , but video slot machines typically use stylized text that suits the game's theme and user interface.

The drop bucket or drop box is a container located in a slot machine's base where excess coins are diverted from the hopper.

Typically, a drop bucket is used for low-denomination slot machines and a drop box is used for high-denomination slot machines.

A drop box contains a hinged lid with one or more locks whereas a drop bucket does not contain a lid. The contents of drop buckets and drop boxes are collected and counted by the casino on a scheduled basis.

Free spins are a common form of bonus, where a series of spins are automatically played at no charge at the player's current wager.

Free spins are usually triggered via a scatter of at least three designated symbols with the number of spins dependent on the number of symbols that land.

Some games allow the free spins bonus to "retrigger", which adds additional spins on top of those already awarded.

There is no theoretical limit to the number of free spins obtainable. Some games may have other features that can also trigger over the course of free spins.

A hand pay refers to a payout made by an attendant or at an exchange point "cage" , rather than by the slot machine itself.

A hand pay occurs when the amount of the payout exceeds the maximum amount that was preset by the slot machine's operator.

Usually, the maximum amount is set at the level where the operator must begin to deduct taxes. A hand pay could also be necessary as a result of a short pay.

Hopper fill slip is a document used to record the replenishment of the coin in the coin hopper after it becomes depleted as a result of making payouts to players.

The slip indicates the amount of coin placed into the hoppers, as well as the signatures of the employees involved in the transaction, the slot machine number and the location and the date.

MEAL book M achine e ntry a uthorization l og is a log of the employee's entries into the machine. Low-level or slant-top slot machines include a stool so the player may sit down.

Stand-up or upright slot machines are played while standing. Optimal play is a payback percentage based on a gambler using the optimal strategy in a skill-based slot machine game.

Payline is a line that crosses through one symbol on each reel, along which a winning combination is evaluated. Classic spinning reel machines usually have up to nine paylines, while video slot machines may have as many as one hundred.

Paylines could be of various shapes horizontal, vertical, oblique, triangular, zigzag, etc. Persistent state refers to passive features on some slot machines, some of which able to trigger bonus payouts or other special features if certain conditions are met over time by players on that machine.

Roll-up is the process of dramatizing a win by playing sounds while the meters count up to the amount that has been won.

Short pay refers to a partial payout made by a slot machine, which is less than the amount due to the player.

This occurs if the coin hopper has been depleted as a result of making earlier payouts to players.

The remaining amount due to the player is either paid as a hand pay or an attendant will come and refill the machine. A scatter is a pay combination based on occurrences of a designated symbol landing anywhere on the reels, rather than falling in sequence on the same payline.

A scatter pay usually requires a minimum of three symbols to land, and the machine may offer increased prizes or jackpots depending on the number that land.

Scatters are frequently used to trigger bonus games, such as free spins with the number of spins multiplying based on the number of scatter symbols that land.

The scatter symbol usually cannot be matched using wilds, and some games may require the scatter symbols to appear on consecutive reels in order to pay.

On some multiway games, scatter symbols still pay in unused areas. Taste is a reference to the small amount often paid out to keep a player seated and continuously betting.

Only rarely will machines fail to pay even the minimum out over the course of several pulls. Tilt is a term derived from electromechanical slot machines' " tilt switches ", which would make or break a circuit when they were tilted or otherwise tampered with that triggered an alarm.

While modern machines no longer have tilt switches, any kind of technical fault door switch in the wrong state, reel motor failure, out of paper, etc.

A theoretical hold worksheet is a document provided by the manufacturer for every slot machine that indicates the theoretical percentage the machine should hold based on the amount paid in.

The worksheet also indicates the reel strip settings, number of coins that may be played, the payout schedule, the number of reels and other information descriptive of the particular type of slot machine.

Volatility or variance refers to the measure of risk associated with playing a slot machine. A low-volatility slot machine has regular but smaller wins, while a high-variance slot machine has fewer but bigger wins.

Weight count is an American term referring to the total value of coins or tokens removed from a slot machine's drop bucket or drop box for counting by the casino's hard count team through the use of a weigh scale.

Wild symbols substitute for most other symbols in the game similarly to a joker card , usually excluding scatter and jackpot symbols or offering a lower prize on non-natural combinations that include wilds.

How jokers behave are dependent on the specific game and whether the player is in a bonus or free games mode. Sometimes wild symbols may only appear on certain reels, or have a chance to "stack" across the entire reel.

Each machine has a table that lists the number of credits the player will receive if the symbols listed on the pay table line up on the pay line of the machine.

Some symbols are wild and can represent many, or all, of the other symbols to complete a winning line. Especially on older machines, the pay table is listed on the face of the machine, usually above and below the area containing the wheels.

On video slot machines, they are usually contained within a help menu, along with information on other features. Historically, all slot machines used revolving mechanical reels to display and determine results.

Although the original slot machine used five reels, simpler, and therefore more reliable, three reel machines quickly became the standard.

This limited the manufacturer's ability to offer large jackpots since even the rarest event had a likelihood of 0.

Although the number of symbols eventually increased to about 22, allowing 10, combinations, [20] this still limited jackpot sizes as well as the number of possible outcomes.

In the s, however, slot machine manufacturers incorporated electronics into their products and programmed them to weight particular symbols.

Thus the odds of losing symbols appearing on the payline became disproportionate to their actual frequency on the physical reel.

A symbol would only appear once on the reel displayed to the player, but could, in fact, occupy several stops on the multiple reel.

In Inge Telnaes received a patent for a device titled, "Electronic Gaming Device Utilizing a Random Number Generator for Selecting the Reel Stop Positions" US Patent , [21] which states: "It is important to make a machine that is perceived to present greater chances of payoff than it actually has within the legal limitations that games of chance must operate.

With microprocessors now ubiquitous, the computers inside modern slot machines allow manufacturers to assign a different probability to every symbol on every reel.

To the player it might appear that a winning symbol was "so close", whereas in fact the probability is much lower.

In the s in the U. These used a number of features to ensure the payout was controlled within the limits of the gambling legislation.

As a coin was inserted into the machine, it could go either directly into the cashbox for the benefit of the owner or into a channel that formed the payout reservoir, with the microprocessor monitoring the number of coins in this channel.

The drums themselves were driven by stepper motors, controlled by the processor and with proximity sensors monitoring the position of the drums.

A "look-up table" within the software allows the processor to know what symbols were being displayed on the drums to the gambler.

This allowed the system to control the level of payout by stopping the drums at positions it had determined. If the payout channel had filled up, the payout became more generous; if nearly empty, the payout became less so thus giving good control of the odds.

Video slot machines do not use mechanical reels, instead of using graphical reels on a computerized display. As there are no mechanical constraints on the design of video slot machines, games often use at least five reels, and may also use non-standard layouts.

This greatly expands the number of possibilities: a machine can have 50 or more symbols on a reel, giving odds as high as million to 1 against — enough for even the largest jackpot.

As there are so many combinations possible with five reels, manufacturers do not need to weight the payout symbols although some may still do so. Instead, higher paying symbols will typically appear only once or twice on each reel, while more common symbols earning a more frequent payout will appear many times.

Video slot machines usually make more extensive use of multimedia , and can feature more elaborate minigames as bonuses.

Modern cabinets typically use flat-panel displays , but cabinets using larger curved screens which can provide a more immersive experience for the player are not uncommon.

Video slot machines typically encourage the player to play multiple "lines": rather than simply taking the middle of the three symbols displayed on each reel, a line could go from top left to the bottom right or any other pattern specified by the manufacturer.

As each symbol is equally likely, there is no difficulty for the manufacturer in allowing the player to take as many of the possible lines on offer as desire — the long-term return to the player will be the same.

The difference for the player is that the more lines they play, the more likely they are to get paid on a given spin because they are betting more.

To avoid seeming as if the player's money is simply ebbing away whereas a payout of credits on a single-line machine would be bets and the player would feel they had made a substantial win, on a line machine, it would only be five bets and not seem as significant , manufacturers commonly offer bonus games, which can return many times their bet.

The player is encouraged to keep playing to reach the bonus: even if he is losing, the bonus game could allow then to win back their losses.

All modern machines are designed using pseudorandom number generators "PRNGs" , which are constantly generating a sequence of simulated random numbers, at a rate of hundreds or perhaps thousands per second.

As soon as the "Play" button is pressed, the most recent random number is used to determine the result. This means that the result varies depending on exactly when the game is played.

A fraction of a second earlier or later and the result would be different. It is important that the machine contains a high-quality RNG implementation.

Because all PRNGs must eventually repeat their number sequence [24] and, if the period is short or the PRNG is otherwise flawed, an advanced player may be able to "predict" the next result.

Having access to the PRNG code and seed values, Ronald Dale Harris , a former slot machine programmer, discovered equations for specific gambling games like Keno that allowed him to predict what the next set of selected numbers would be based on the previous games played.

Most machines are designed to defeat this by generating numbers even when the machine is not being played so the player cannot tell where in the sequence they are, even if they know how the machine was programmed.

This is known as the "theoretical payout percentage" or RTP, "return to player". The minimum theoretical payout percentage varies among jurisdictions and is typically established by law or regulation.

The winning patterns on slot machines — the amounts they pay and the frequencies of those payouts — are carefully selected to yield a certain fraction of the money paid to the "house" the operator of the slot machine while returning the rest to the players during play.

Within some EGM development organizations this concept is referred to simply as "par". Play now! A slot machine's theoretical payout percentage is set at the factory when the software is written.

Changing the payout percentage after a slot machine has been placed on the gaming floor requires a physical swap of the software or firmware , which is usually stored on an EPROM but may be loaded onto non-volatile random access memory NVRAM or even stored on CD-ROM or DVD , depending on the capabilities of the machine and the applicable regulations.

Based on current technology, this is a time-consuming process and as such is done infrequently. Other jurisdictions, including Nevada, randomly audit slot machines to ensure that they contain only approved software.

Historically, many casinos, both online and offline, have been unwilling to publish individual game RTP figures, making it impossible for the player to know whether they are playing a "loose" or a "tight" game.

Since the turn of the century some information regarding these figures has started to come into the public domain either through various casinos releasing them—primarily this applies to online casinos—or through studies by independent gambling authorities.

The return to player is not the only statistic that is of interest. The probabilities of every payout on the pay table is also critical.

For example, consider a hypothetical slot machine with a dozen different values on the pay table. You can design any interface you like.

We have created an interface as shown below:. Based on these three random numbers, three different pictures will be loaded into the three image boxes randomly using the LoadPicture method.

Animated effects are created by putting the above procedure under the control of Timer1, which will call the spin procedure after every interval until it fulfills a certain condition.

Sounds are also added using the Microsoft Multimedia Control to make the game more realistic and interesting.

Slot Machine Database

Slot Machine Database Video

What Slot Machines Can Tell Us About Our Brains

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