Top 100 Slot Sites
Expert Online Casino Reviews - Casino.org independently review & rank each online casino with our '25 step process'. Comparing games, bonuses + more. Top casino sites provide players with a casino bonus to use on new slot games such as free spins. Once you have a good grasp of the game, join online casinos offering free slot tournaments. Check the prize pool to see if it is worth playing for. Sometimes playing in tournaments can be a waste of your time.
The best slot sites are the ones that combine entertainment with the possibility of hitting a big jackpot. It might seem like you could just sign up for an account at the first search listing in Bing or Google and be off to the races, but that’s a big mistake.
Your best bet is to find a guide to the top slot sites that you can trust. This will help you avoid scams. We recommend the following websites:
| Rank | Gambling Site | Deposit Bonus | Get Started | |
| #1 | 100% Up To €250 | Visit Site | ||
| #2 | Europa Casino | 200% Up To €500 | Visit Site | |
| #3 | 100% Up To €400 | Visit Site | ||
| #4 | Spinia | 100% Up To €250 | Visit Site | |
| #5 | 100% Up To €400 | Visit Site | ||
We have a more ambitious goal for this guide of the best slot machine sites
than to just offer you a list of recommendations, though. In fact, you should
expect more than that from any guide.
You’ll find the justifications and criteria for our rankings on the rest of
this page. We didn’t just put together a random list of the “top” slot machine
websites. We considered several factors, and you should understand all these
when deciding where to play.
What Makes a Slot Site the Best
When we say that we’re going to provide information about what makes a slot
site the best, we’re talking about the factors that we consider when ranking
slots sites. It’s about more than having the best games with the best graphics
(although, that’s a factor).
We want to account for other factors which are just as important to a slot
machine gambler but aren’t as readily apparent. Below, we’ve listed the factors
that make a slot site the best.
High Payouts
Probably the most important consideration for evaluating a casino for this
list of best slot sites online is payback percentage (or return to player). Some
players worry about this too much, but others don’t even consider it. We’ve
tried to list the online casinos with the best slots in order of payback
percentage.
What does that mean?
It’s just the statistical average payout divided by the amount of money
you’ve wagered on the machine. A slots game with a payback percentage of 96%
will win 4% of your aggregate wagers in the long run, while a slots game with a
payback percentage of 95% will win 6% of your aggregate wagers in the long run.
When you’re looking at an average of 600 spins per hour, you’re talking about
putting at least $150 into action per hour, so the difference between 4% and 6%
adds up.
Keep in mind, too, that the payback percentages advertised for various online
slot sites are estimates based on all their games over time.
Some slots games at these online casinos might have a payback percentage of 95%, while others might
have a payback percentage of 75%.
If you’re intrigued by this concept, it’s easy to enough to track your wagers
and how much money you’ve lost. With enough spins in your database, you can
start to estimate the payback percentages for the games yourself. Just keep in
mind that in the short run, your actual payback will be at the whim of
short-term variance.
Of course, we don’t have access to the algorithms behind the games. We
base our rankings of payback percentages on anecdotal evidence and our own play
at these sites.
The best payout percentage we’ve seen for a slot machine game is the
Cosmic Quest slot game at Café Casino. If that’s your most important criterion,
you should sign up there and play Cosmic Quest for yourself.
Variety of Games
The casino sites with the best slots also usually have the best variety of games to choose from.
If all the games are similar in presentation, you’ll get bored fast. This means
different games with different themes and payback structures make for the best
player experience.
Sometimes, you might be in the mood for a game with three reels and a single
payline and traditional symbols like cherries, bars, and plums. Other times you
might prefer a five-reel game with 25 paylines and multiple bonus features. You
might even be looking for a game with a progressive jackpot.
Each of these types of games has its pros and cons. A three-reel, single
payline game usually has a higher payback percentage than the other types of
games available, but the top jackpot is usually limited to about 1000 coins. The
games with more reels and more paylines are more exciting and have bigger
prizes, but over enough time, you tend to lose more money.
The games with the lowest payback percentage are the progressive slots, but
players who love those games don’t care about the statistical payback
percentage. They want a shot at a jackpot that could change the quality of their
lives.
We’ve chosen this list of slot sites because they offer each of these experiences.
If you’re looking for the site with the most slots games, try Bovada
Casino. They offer over 500 different slot machine games from multiple software
providers. You can also play poker with other real players and bet on sports
there if you need a break from the one-armed bandits.
Mobile Compatibility
At one time, everyone interested in the sites with the best slots focused
entirely on playing these games from their desktop computer. Eventually, laptop
computers got strong enough to use, too. Mobile compatibility wasn’t an issue
until recently.
But now that it’s an issue, it’s essential for most slots players. After all,
how many people do you know that strictly use a flip phone and only access the
internet from their laptop or desktop computer?
The level of graphics and sound effects provided by these games as part of a
mobile user experience are a major criterion we used to develop this list of
recommendations. We understand that most of our players are interested in
playing mobile slots.
Ignition Casino offers the best mobile compatible slots. We recommend
trying Ignition if you’re planning to play from your mobile device most of the
time.
Bonus Offers
It’s impossible to create a list of the best online slot sites without
considering who has the best bonus offers. If you’re not familiar with how an
online slots casino bonus offer works, it’s simple:
To incentivize signups, online casinos offer free money when you make your
first account. They add this money to your account as a percentage of your first
deposit. You then must make a minimum number of wagers before cashing out your
winnings.
The biggest signup bonus you’ll find is at Sloto Cash. They offer a
200% signup bonus of up to $7777 on your first five deposits. To take full
advantage of this bonus, you only need to deposit $3889 over five deposits. When
you do, you’ll get the $7777 bonus added to your account, which means you’ll
have a total bankroll to play with of $11,667.
You can chase jackpots for a long time with a bankroll like that.
And if that’s not enough, Sloto Cash also offers new players 300 free spins.
Café Casino offers a great bonus offer, too. Deposit $1000, and
you’ll get a 500% bonus of $5000 added to your account. This means you’ll have a
total bankroll of $6000 to play with.
Of course, you can’t cash that money out unless and until you meet the
wagering requirements. One of the requirements for being listed here is that the
casino in question has reasonable wagering requirements.
With the bonus offer at Sloto Cash, you’re required to wager 60x your deposit
plus bonus. With the bonus offer at Café Casino, you’re required to wager 35x
your deposit plus bonus.
If you have the bankroll to afford it, we recommend taking advantage of both
offers. Get as much free money to play with as you can.
Tournament Availability
It’s hard to list a company on a list of top online slots sites if it doesn’t
offer slots tournaments. And if you’re not familiar with how online slots
tournaments work, you’re missing out.
The site has a starting time for the tournament. You usually pay an entry
fee, although some slots tournaments are free.
Everyone who pays the entry fee gets the same number of credits to play with.
You use those credits to spin the reels. Your goal is to have the largest number
of credits at the end of the tourney.
It’s important to remember that these credits are only useful in the context
of the tournament. They’re like Monopoly money. They’re just used to keep score.
The best way to win one of these tournaments is to make as many spins as
possible so that you can book as many wins as possible. Of course, there’s no
more skill involved in a slot machine tournament than there is in playing online
slots for regular money.
Online slots tournaments are generally special events or promotions offered
periodically by the top casino sites. Sometimes they even offer free entries into
freeroll slots tournaments where you can win real money. Your entry is comped
based on the amount of play you’ve brought the site over time.
The top slot sites for online tournaments are listed above including
Sloto Cash and Slots.lv. Of those Sloto Cash offers more tournaments more often
and with lower entry fees.
Software
The top online slots sites use multiple reliable software providers. A
decade ago, most of these kinds of sites only offered games from a single
software provider, but now, most offer multiple games through multiple
platforms. This provides players with a bigger variety of games to choose from.
Our favorite site based on software is Bovada, although Slots.lv is a close
second. Both sites offer slot machine games through RTG, Rival, and Spinomenal
software packages. RTG provides both sites with slot machine games like The
Three Stooges and Cleopatra’s Gold.
We’ve already talked about what big fans we are of Cosmic Quest
slots, which is one of the top-tier games offered by Rival licensees. Midway
Madness is another fun game from Rival that’s available at these casinos.
Our favorite games from Spinomenal include Demi Gods II and
Lemur Does Vegas, both of which offer unique experiences unavailable in
traditional land-based casinos.
But any of the sites on our top online slots casinos list offer multiple
games from multiple high-quality software providers. You won’t find a loser in
the bunch.
Country Considerations
The best slot sites online offer service to the widest range of countries. It’s hard
for us to list a slots site here if they don’t accept real money players from
the United States, for example.
We won’t get into details of the legal situations in various countries. In
fact, these recommended sites aren’t available to all players in all countries
(or even jurisdictions within countries).
You should always check your local laws before playing on these online slot sites for
real money. We’re convinced that in most jurisdictions, your legal risk is
negligible, but that doesn’t mean its nonexistent. We disclaim any liability
based on decisions you’ve made. We assume you’re an adult of decision-making age
who has done their due diligence before deciding where to play.
Suffice it to say that most of the top slot sites listed here operate from
the assumption that the gambling is taking place in THEIR jurisdiction not
yours. Since they’re licensed and regulated there, no laws are being broken.
Other properties operate from different assumptions, but if they have a large
number of countries that they disallow play from, we disqualify them from our
list.
All of the properties on our list of best slot sites accept players from most
countries – even the United States, which is the country that seems to get singled
out for discrimination among online casinos more than anyone else.
Customer Service Considerations
Anyone doing research into which top slot sites deserve to be ranked “the
best” would be negligent if they didn’t spend time researching customer service
complaints on the various player forums on the internet. Not only should
customer service operate during reasonable hours (preferably 24/7), but they
should also offer multiple avenues for contacting them.
Some of our visitors prefer to talk on the phone, while others prefer to send
an email and get a response via email in a timely manner. Some of our visitors
probably prefer live chat support.
We’ve tried to be sensitive to these preferences when putting together this
list. The online casinos with the best slots on this list have minimal
legitimate complaints made against them in the most popular player forums on the
internet.
Licensing and Regulation
One of the first things we look for when evaluating for the best slot site is
where they’re licensed and regulated. Most online casinos are licensed and
regulated somewhere, but some jurisdictions provide more oversight than others.
Obviously, the jurisdictions which provide more oversight provide a safer
experience than the jurisdictions providing less oversight.
And naturally, we eliminate any site from consideration from our list if it
doesn’t prominently display information about where it’s licensed and regulated.
Here’s a list of jurisdictions which commonly license and regulate slots
sites online, we’ve ranked them from best to worst, in terms of oversight and saftey
- Kahnawake
- Antigua and Barbuda
- Curacao N.V.
- First Cagayan Philippines
- Costa Rica
Most of the sites that made our list are licensed in Kahnawake, but at least
one is licensed in Curacao. Some even more restrictive jurisdictions often
restrict real money players from the United States, so we’ve leaned toward
listing the sites with licenses from jurisdictions that allow play from most (or
all) foreign countries.
Online Casinos With the Best Slots
Above are the five online casinos with the best slots.
We’ve included some observations about what each of these sites bring to the
table and what qualifies them for this list below.
Ignition Casino
Ignition Casino caters only to slots players from the United States and
Australia, but their selection of games is unrivaled. They offer slot machine
games powered by their proprietary software, as well as offering games from
Rival, RTG, Revolver Gaming, and Spinomenal software.
If you’re one of those slot machine players who also enjoy poker, you can
play real poker with other players there. Their customer service is second to
none, and they have a wide variety of deposit and payout options. The gambling
age at Ignition Casino is 18+, making it friendlier for younger gamblers than
some of the other top online slot sites.
Bovada Casino
Most people associate the Bovada brand with sports betting, but they offer
one of the most robust casino platforms on the web. Bovada serves a broader
worldwide audience than Ignition Casino, having customer support and websites in
the following languages:
- Chinese
- English
- Portuguese
- Spanish
They also use proprietary software for some of their slots games, as well as
offering the most popular slots games from RTG, Rival, and Spinomenal. Bovada is
also completely mobile-friendly.
Café Casino
Café Casino is known for being friendly and welcoming to players from the
United States. They offer one of the best signup bonuses for slot machine
players, and they also feature games from a variety of software providers,
including Betsoft, RTG, Revolver, and Rival.
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Café Casino, like Ignition, operates primarily in the United States. If
you’re a player using Bitcoin to gamble with, this is one of your best options.
Sloto Cash
Sloto Cash Casino offers a wide variety of mobile-friendly slots games using
both RTG and BiG software. Slot sites like Sloto cash are avaliable in English and serve mostly a
United States-based market, although Sloto Cash does not accept real money
players from states with restrictive gambling laws like Kentucky, Louisiana,
Maryland, Missouri, New Jersey, New York, and Washington.
If you’re looking for the biggest signup bonus, you won’t find a better offer
than the $7777 in free money at Sloto Cash.
Slots.lv
Slots.lv specializes in slots and related games like bingo games and lottery
games, especially scratch and win games. Most of the games are powered by RTG
and Rival, but Slots.lv also has some of its own proprietary slot machine games
on offer.
Slots.lv is mobile-friendly and caters to a United States audience. Slots.lv
also accepts players from China.
Conclusion
That’s our detailed look at the best slot sites online. Whether your goal is
to while away some time or win a big jackpot, the top slot sites on this list
should fill your needs with minimum customer service hassle and a maximum of
payouts.
Don’t sign up for just any casino site. Insist on only playing at the top
slot sites online, like the ones listed at the top of the page. You work hard for your
money, and you shouldn’t gamble with it at shady operations or casino sites with
a minimal variety of games.
Whilst many people decide which slot to play based on the theme, special features or promotional offers, the savvy gamblers steer towards slots with the highest RTP. The house edge of online slot machines can vary widely, and it stands to reason that the lower the house edge, the better your chances of winning.
| Top RTP Slots | RTP | Bet Limits | Free Spins | Paylines | Rows | Reels |
|---|---|---|---|---|---|---|
| Jack Hammer 2 | 97.10% | £0.50 – £250 | 10-20 | 99 | 3 | 15 |
| Simsalabim | 97.50% | £0.25 – £125 | Yes | 25 | 3 | 5 |
| Retro Reels Extreme Heat | 97.50% | £0.30 – £112.50 | Up to 20 | 30 | 3 | 5 |
| Devil’s Delight | 97.60% | £0.20 – £40 | Yes | 20 | 3 | 5 |
| Kings of Chicago | 97.80% | £0.05 – £50 | Up to 30 | 5 | 3 | 5 |
| Starmania | 97.87% | £0.10 – £20 | 10 | 10 | 3 | 5 |
| Blood Suckers | 98.00% | £0.25 – £50 | 10 | 25 | 3 | 5 |
| 1429 Uncharted Seas | 98.60% | £0.10 – £100 | 25 | 50 | 3 | 5 |
| Jackpot 6000 | 95.10 – 98.90% | £1 – £2 | No | 5 | 3 | 3 |
| Mega Joker | 99% | £1 – £5 | No | 5 | 3 | 3 |
Of course, you should keep in mind that only the best slot sites to win offer high payout games from which you can take advantage. The return to player percentage of a game is measured over thousands of game rounds, and it stands to reason that the higher the RTP, the better the deal for the player. With this in mind, I have decided to create a list of the 10 online slots with the highest RTP.
#10 Jack Hammer 2 (NetEnt) – 97.1% RTP
Jack Hammer 2 is the first of many NetEnt slots to make this top 10 list. This entertaining slot has a crime and adventure theme, captured in a comic book style. There are an impressive 99 bet lines in this game, providing plenty of opportunities to win. It also boasts a variety of interesting features that make the game exciting to play, whilst creating chances to win. The Sticky Win feature sees any winning symbol combinations held in place for a free re-spin, and they continue until no new wins are created. There is also a free spin feature, where you get up to 20 free plays, where all wins are doubled and extra wilds randomly land on the reels. Jack Hammer 2 has a player-friendly RTP of 97.1%
#9 Simsalabim (NetEnt) – 97.5% RTP
This magical themed slot recreates all the excitement of a magic show. The stage is set, with symbols such as a magician’s wand and top hat, a caged dove and a Houdini-style chained chest. The hypnotist is wild, helping to complete winning symbol combinations. When you play Simsalabim, keep your eyes peeled for 3 bunny rabbit symbols on the first 3 reels. These trigger the bonus game, where you pull rabbits from the hats to reveal cash prizes of up to 50500 coins. The slot also features a free spins round, which provides the potential for big wins thanks to the triple payouts. All these features combine to provide a great RTP of 97.5%.
#8 Retro Reels Extreme Heat (Microgaming) – 97.5% RTP
The RTP of 97.5% is one of the highest you will find in the Microgaming slots selection.Retro Reels Extreme Heat has an old-school feel, with symbols you’d expect to see on a classic fruit machine, including cherries, lemons, bells, bars and 7’s. At the same time as providing a retro feel, it includes many features which you’d expect from a modern video slot. There is a free spin bonus, where you can get up to 20 free plays with all wins doubled. There are also wild substitutions and scatter pays. A highlight is the innovative re-spin feature. After any spin, you can choose to spin just one reel, which allows increased chances of winning.
#7 Devil’s Delight (NetEnt) – 97.6% RTP
Unleash your inner devil in this NetEnt video slot. Set against a fiery backdrop and tombstones, the 5 reels are filled with symbols from the underworld.Devil’s Delight is packed full of exciting features that provide plenty of chances to stack up the wins. The devil wild expands to cover entire reels. Whilst the free spins bonus features win multipliers of up to x5. Yet the real highlight of the game is the unique Soul Reaper bonus game. Match the correct sin to each character their soul will be added to the Soul-O-Meter whilst you reap a coin prize. When the Soul-O-Meter is filled with 15 souls, the Sin Spins feature is activated. Here, you get 10 Sin Spins where you can pocket some juicy rewards. With so many cool features and a high RTP of 97.6%, this is one hell of a slot!
#6 Kings of Chicago (NetEnt) – 97.8% RTP
Kings of Chicago mixes the best elements of a video slot with classic poker. The game is played with a deck of cards, which is shuffled before each round. Unlike normal slot machines, where payouts are made for matching symbols across paylines, in this slot, you win if you have a poker hand on one of the five paylines. The game includes a joker, which substitutes for all cards. Plus, the scatter label can randomly appear on any card. Get 3 or more and free deals, the equivalent of free spins are triggered. You can bag up to 30 free deals in the special feature and all wins are doubled. This innovative slot machine provides a unique twist on what you expect from a video slot, and boasts an impressive RTP of 97.8%.
#5 Starmania (NextGen) – 97.87% RTP
With colourful star symbols set against a pretty outer space background and a spacey, ethereal soundtrack, this NextGen slot is a real treat for the senses. Wilds are stacked onto the reels boosting your shot at winning combinations. There is also a free games feature, where extra stacked wilds can help create some big wins. The game features 10 paylines and wins are paid in both directions. With every line win, you also have the option to gamble your prize, for a chance to double or even quadruple your win multiple times. The great graphics, exciting features and favourable RTP of 97.87% make Starmania a real hit with players.
#4 Blood Suckers (NetEnt) – 98% RTP
The vampire genre has never been more popular, and it is the inspiration for this spooky NetEnt slot. You’ll see various Blood Suckers adorning the reels, along with the weapons to fight them off. It is not merely the impressive 98% RTP that draws players to this slot, but also the rich selection of special features. There are wild substitutions, scatter pays, free spins with triple payouts and a vampire slaying bonus game. Trigger the bonus and you will find yourself in an ancient burial chamber, filled with coffins. Open the coffins to slay vampires, earning coin wins with each creature you defeat.
#3 1429 Uncharted Seas (Thunderkick) – 98.6% RTP
This video slot from Thunderkick is visually stunning. The reels are replaced with a medieval style hand-drawn map and the symbols include a variety of sea creatures and beasts as well as sun, moon and star symbols. The slot includes a wild symbol which expands to cover entire reels, helping to create bigger wins. There is also a free spins bonus where you can earn up to 50 free goes. 1429 Unchartered Seas has a rewarding RTP of 98.6%, one of the highest you will find in a video slot, making it a popular choice with players.
#2 Jackpot 6000 (NetEnt) – Up to 98.8% RTP
Jackpot 6000 is a thrilling classic slot machine from NetEnt with a real old-school vibe. You can play with up to 5 paylines active, betting between 1 and 10 coins per spin. It is highly recommended to play with the maximum bet of 10 coins however, as this creates the possibility of triggering Supermeter mode. In this game mode, you can win a mystery prize of between 10 – 6000 coins when just 2 joker symbols land anywhere on the reels. Also, getting 3 jokers on a payline in Supermeter mode guarantees a jackpot payout of 6000 coins. When you play Jackpot 6000 with 1 – 8 coins, the RTP is a paltry 74.9% – 79.2%. Yet with 10 coins in play, the RTP ranges from 95.1% – 98.8%. The variance is because Supermeter mode is skill based, so you can directly impact the outcome.
#1 Mega Joker (NetEnt) – Up to 99% RTP
Whilst Jackpot 6000 boasts an extremely high RTP, it is just beaten to the top spot by another NetEnt classic slot; Mega Joker. Bet with just 1 coin and the RTP is an underwhelming 76.9%. Yet on the other hand, a max bet of 10 coins elevates the RTP to between 89.1% – 99%. Furthermore, it provides bigger payouts and the Supermeter mode. In Supermeter mode, you need to choose the bet level and the optimum level at which to collect your winnings. It is this element of skill which can increase the RTP. The skill component, retro style and engaging gameplay make Mega Joker a firm favourite with players.
Frequently Asked Questions
Because our goal is to keep you well informed we have put together a list of the most frequently asked questions and our team of experts has provided the answers below.
🏆 What are the best paying slots?
The best paying slots are the ones that feature a high RTP because that translates to a small house edge such as NetEnt’s Jack Hammer 2 slot or Simsalabim, with a return to player percentage of over 97%.
✍ How do I choose a good slot machine?
In choosing a good slot machine a player should look for high payouts, volatility and the features of the game itself. For example, you are bound to have a higher return on your investment while playing a slot with free spins and multipliers.
💱 What is the average payout on slot machines?
The average payout on slot machine varies among slots but you are going to find a higher return-to-player percentage in the recommended online casinos as compared to the traditional slot machines. Blood Suckers slot and 1429 Uncharted Seas slot have a very high RTP of over 98%.
🎰 What is a high variance slot machine?
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High variance slots are destined for gamblers who are willing to play for huge wins.Kings of Chicago is a great example in that direction because it features not only a high RTP but also a high variance, which makes it ideal for our example. Flexible betting limits, free spins and a unique twist on slots as we know them are just a few perks of enjoying this title.
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