Best 10 Online Casino Slots in 2023 + (Extra Bonus Slot)

Are you a fan of slot games?  If so, this is the article for you. If you are dipping your toes into the gambling world and ready to try some slots, or if you are a pro who has been spinning the slots for years with some decent wins under your belt, let us look at which top 10 slots we have discovered based on our research. 

Each player will have different criteria when choosing which slot to play. It could be the amount of money that can be won, including life-changing jackpots. Others prefer the lower volatility slots where the ups and downs won’t be so bumpy. 

The slots we have listed below have many different qualities and mechanics, so let us dive right in and see our picks’ main features and benefits.

Best 10 Online Casino Slots 2023 + (Extra Bonus Slot):

  • Gonzo’s Quest Slot 
  • Sweet Bonanza Slot
  • Gates of Olympus Slot
  • Game of Thrones Slot
  • 88 Fortunes Slot
  • Cleopatra Slot
  • Wolf Gold Slot
  • Book of 99 Slot
  • Gladiator Slot
  • Thunderstruck Slot
  • Mega Moolah Slot (Bonus)


Things We Considered for Choosing These Slots

Here are some spoilers about the things we considered.

  1. World gambling statistics show that around 26% of the population gamble and 72% of them play online slots 
  2. 50% of gamblers play online slots from smartphones.
  3. 70% of GGY (Gross Gaming Yield, percentage of wagers kept by casino/gaming operators) comes from slots.
  4. To create this article, more than 3,000 online casino slots are analyzed.
  5. These 3,000+ slots’ search volumes on Google are considered (based on Ahrefs and KWFinder stats).
  6. The RTP and volatility of these slots are considered.
  7. Top winnings are considered.

First is the slot’s popularity, the theme, graphics and sounds, the RTP and volatility, extra features, including the Free Spins, available jackpots, etc.

For example, the more recognized the slot theme is, the higher the chances it will gain in popularity fast. However, to keep the high levels of popularity, players already start considering other factors, such as the RTP and volatility. Besides, the more bonus sections the slot has, the higher its popularity may be.

With this said, as a rule progressive jackpot slots are more popular!

So, let’s start with our first choice which is the Gonzo’s Quest slot!

1. Gonzo’s Quest Slot – Direct Link to Betssen

Click here to play Gonzo’s Quest slot to help Gonzo in his quest searching for gold and riches.

Gonzo’s Quest slot has made it to number one on our list as it’s been around for over a decade and is still as popular and sought after as when released. The developer behind this one is Netent, and the theme is Mayan.

The game is set in the ancient city of El Dorado, and players follow the adventures of a conquistador named Gonzo as he searches for the legendary city of gold.

It has a standard layout with 20 fixed paylines, three rows, and five reels. The mechanics are avalanche, and with each win, the symbols fall off the reels, are replaced by new, and you also gain an increased multiplier. In the base game, the multiplier starts at x1 and increases to x2, x3, and x5 after each win in the base game. 

During the free falls, or free spins the multiplier starts at x3 and goes up to x6, x9, and x15.

The graphics are exceptional; even though it has been around so long, it is fully compatible with any mobile play and is a cult favorite amongst gamblers.

Find out how to monetize Gonzo’s Quest slot here! (SHHH!)

Key takeaways or key point of the game 

Short Stats

Key Points: Free Spins

RTP: 95.97%

Biggest gains: x37.500

Volatility: Medium to High

Winning Probability: 40%

Age: 2011

Canadian Google Searches: 140

Global Google Searches: 2,200

Next up you are going to love the maximum win of x21,100 on our second choice on our list.

2. Sweet Bonanza Slot

Sweet Bonanza is a sugary slot that has gained massive popularity since its release. The theme makes you feel like you are in a sweet shop with gooey treats depicted as symbols. 

The visuals and graphics are extraordinary with a well-designed game by Pragmatic Play. It comes with six reels and five rows and pays for eight or more matching symbols anywhere across the board. What this means for you is that you do not need symbols to line up across paylines. Instead, they can be anywhere across the game board to be worthy of a payout. Any combination of winning symbols tumbles off the reels. 

It allows new symbols to drop down and continue to reward you with more wins. The tumble mechanics continue until there are no more combinations of matching symbols.

However, with this one, you need to hit the free spins to hit the massive win of x21,100. Four or more bright pink lollipop scatters will get you ten free spins. During the feature, the tumble mechanics are still in play, however, there are extra sugar bomb symbols. 

These bring multipliers to the reels up to x100. When a few of these land together, they are added to the total win of that spin, and you can now see how that big amount is achievable.

If you like crazy movements, then try your luck in this slot!

Boost your chances of winning in Sweet Bonanza, by checking out more about Sweet Bonanza slot here, and learning winning tips and strategies!

Short Stats

Key Points: Free Spins

RTP: 96.48%

Biggest gains: x21,100

Volatility: Medium

Winning Probability: 64.04

Age: 2019

Canadian Google Searches: 110

Global Google Searches: 7,700

The multipliers on our next selection of up to x500 makes it a thrilling and must play choice.

3. Gates of Olympus Slot

Step through the gates into Zeus’s world in this newly released slot by Pragmatic Play. It comes with six reels and five rows with tumble and pay-anywhere mechanics and high volatility. 

A minimum of eight symbols are necessary, which can be anywhere across the reels to form a win. The symbols are removed, and new ones fill the empty spaces to create more wins. Another great asset is the four different multiplier symbols. 

They can land in the base or bonus game and reward you with multipliers of up to x500.

The bonus free spins feature needs four Zeus scatter symbols to land anywhere on the reels. You get fifteen free spins, and three or more scatters during the bonus will award another five free spins. 

Any multipliers are added together, and you can achieve some enormous wins. Another great extra is that you can buy the feature anytime for x100 of your bet amount.

Let the ancient gods Zeus guide you through your journey with lightbolts, come take a look!

Short Stats

Key Points: Free Spins

RTP: 96.50%

Biggest gains: x5000

Volatility: High

Winning Probability: 31.06%

Age: 2021

Canadian Google Searches: 280

Global Google Searches: 13,700

Are you ready to capture the Iron Throne and score huge victories as you march through Westeros’s ancient kingdom in our next pick?

4. Game of Thrones Slot

Game of Thrones is a five-reel and 3-row 243 way pay mechanism slot by Microgaming. Wins must be left to right with at least three matching symbols. 

The scatter symbol can land anywhere and also pays out for 2 of a kind. The graphics are great considering its age, and it is playable on all mobile devices.

Three or more Iron Throne scatters trigger free spins. Next, you are offered a choice of four features and you must pick one. It ranges from eight to eighteen free spins with multipliers of x2 to x5 and stacked shields on various reels.

If you are a Game of Thrones fan this is a definite one for you to check out!

Short Stats

Key Points:Free Spins

RTP: 95%

Biggest gains: x25.000

Volatility: Medium

Winning Probability: 27.07%

Age: 2014

Canadian Google Searches: 20

Global Google Searches: 4,000

In this following option, you’ll have the chance to travel to faraway Asia in search of fortune and prosperity.

Check out also Best 10 Online Slots For Real Money In Canada + (Extra Bonus Slot)!

5. 88 Fortunes Slot

If you seek luck and fortune, look no further. Developed by SG Gaming, 88 Fortunes is often on casinos’ top slots for easy gameplay, incredible graphics, and big prizes that can be won. 

The Far East is where this game takes place, and the symbols and layout all follow the theme perfectly. The mechanics used are 243 ways to win, and the more you bet in this one, the more gold coins you will receive to achieve one of the four jackpots.

The massive appeal is the fact that there are both a free spins feature and a random jackpot game that can happen at any point. Three to five of the Gong scatters on adjacent spots on the reels will get you ten free games. 

During free spins, the Ace, King, Queen, Jack, 10, and 9 symbols are gone. In addition, the feature can be retriggered with extra scatters appearing.

If you consider the Far East the road to your wealth and fortunes, you must give this one a spin!

Short Stats

Key Points: Progressive Jackpot

RTP: 96%

Biggest gains: x1000

Volatility: Medium

Winning Probability: 31.92%

Age: 2016

Canadian Google Searches: 180

Global Google Searches: 3,000

Next up on our list is the Queen of Egypt in this timeless and captivating game.

6. Cleopatra Slot

It’s one of the classics, and Cleopatra’s creators are software giants IGT, it is an ancient Egyptian-themed favorite among players globally. What you get is five reels and 20 paylines that aren’t fixed. However, we always recommend you play maximum paylines; otherwise, you could miss out. 

The free spins are where all the action happens, with three to five Sphinx scatters anywhere on the grid. You get fifteen free spins with a possibility of up to 180 on retriggers. Additionally, all wins are multiplied by x3.

If you enjoy enchanting and mysterious games, you will want to check this one out!

Short Stats

Key Points: Free Spins

RTP: 95.02%

Biggest gains: x10,000

Volatility: Medium

Winning Probability: 19.57%

Age: 2002

Canadian Google Searches: 550

Global Google Searches: 4,300

The next one will surely delight you if you want to be part of the wolf pack while winning along the way.

7. Wolf Gold Slot

Wolf Gold has 25 paylines with five reels and three rows and was created by Pragmatic Play. It’s on our list as, since its release, it has gained a loyal following, and even though it has been around a while, it is still as popular as when it was first released.

The reason for the popularity is all the features. 

  • First up, three scatter symbols award five free spins with mystery symbols and a retrigger possible. 
  • Next, the money respins feature happens when six or more money symbols appear on the board. 
  • Three respins get awarded, and each new win resets the counter. 

Once all the free spins are played, any cash amounts displayed are paid to your balance. A full screen of the symbols awards x1000 of your bet. Lastly, the jackpot feature happens when you get five golden reels. You get to spin the Wheel of Fortune, which will decide your fate and the prize awarded.

Are you interested in joining the wolf pack and achieving amazing marvels? Check it out!

Short Stats

Key Points: Power Jackpot

RTP: 96.01%

Biggest gains: x2500

Volatility: Medium

Winning Probability: 41.75%

Age: 2017

Canadian Google Searches: 150

Global Google Searches: 1,600

Next on our list is a one-of-a-kind opportunity to rewrite history by participating in a great battle between the gods.

8. Book of 99 Slot

Book of 99 by Relax Gaming is set in Ancient Greece with five reels and ten paylines. The incredibly high RTP of 99% makes this one stand out. This is far above average and what attracts many gamblers. Besides that, the gameplay is decent, with average graphics.

The fun happens when you trigger free spins. This can happen in two ways, either each time a book lands, it fills the meter on the side, and when you hit 99 books, you get awarded the feature. Otherwise, it can also happen with three or more book symbols land together on the reels and you receive ten free spins for both methods. 

In addition, an expanding symbol gets chosen, filling entire reels, and will payout even when not on adjoining reels.

If you love collecting books and gaining money simultaneously, you must check this one out!

Short Stats

Key Points: Free Spins

RTP: 99%

Biggest gains: x12,075

Volatility: High

Winning Probability: 29.84%

Age: 2021

Canadian Google Searches: 10

Global Google Searches: 130

Next, our Roman themed game will entrance you from the first spin.   

9. Gladiator Slot

Get ready to enter the Coliseum and go to battle in the Gladiator slot by Playtech. Even though it has been around for years, it’s still very popular, and the graphics and game quality have stood the test of time. It comes with 25 paylines, five reels, and three rows.

There are two features you can receive. Firstly three or more Coliseum Scatters allow you to pick stones that award you the number of free spins and multipliers for the free spins bonus. Next up, the Gladiator bonus happens when three helmets land on reels two to four. Nine different helmets will award you different prize amounts, which are added together and transferred to your balance.

If you want to head into battle for your wealth you should try this one out! 

Short Stats

Key Points: Free Spins

RTP: 94.09%

Biggest gains: x5000

Volatility: Medium

Age: 2009

Canadian Google Searches: 20

Global Google Searches: 3,800

Age has not weathered our next pick, and there are some big payouts to be had on this one.

You’ll find lightning, thunder, and storms here. Can Thor bring good luck to you?

10. Thunderstruck Slot

Thunderstruck is one of Microgaming’s original releases. Based on Norse, the god of thunder, it centers around Viking mythology. Although it is one of our older selections, it still presents as a graphically acceptable game with five reels and nine paylines. Five of a kind of Norse pays out x1,111 your bet, and he substitutes for all other symbols except the scatter and doubles a win when part of a combination.

The free spins trigger when three or more ram scatter symbols appear anywhere on the reels. You get fifteen free spins which can be re-triggered. The best part is that any wins you make also get tripled. In addition, you can use the gamble option to double or quadruple your winnings.

If you like a good storm full of lightning bolts, which can bring your wealth, you will definitely want to check this one out!

Short Stats

Key Points: Free Spins

RTP: 96.1%

Biggest gains: x1,111

Volatility: Medium

Winning Probability: 30.42%

Age: 2004

Canadian Google Searches: 70

Global Google Searches: 880


What’s not to love about our extra bonus slot?  Any spin on this one could change your life forever!

11. Mega Moolah Slot

We had to squeeze Microgaming’s iconic slot in here. Offering one of the biggest jackpot prizes, the appeal of this slot is vast. It features 25 paylines and five reels. The lion symbol is the wild. It will also double any wins made with it in the winning spin.

The game’s main appeal is the progressive jackpot which has forever changed a few lives, having won millions! The jackpot is entirely random and can trigger at any time. You get to spin a wheel that will award you one of the four jackpots. The free spins feature needs three money scatters anywhere to get fifteen free spins with x3 payouts.

You won’t want to give this one a miss with the eye watering jackpot you could win! Give it a go today.

Short Stats

Key Points: Progressive Jackpot

RTP: 88.12%

Biggest gains: x15,000

Volatility: Medium

Winning Probability: 45.27%

Age: 2006

Canadian Google Searches: 190

Global Google Searches: 1,500

To Summarize

All our top slots have lots of reasons you should try them out. You can play them all in demo mode if you want to test them before playing for real money. So test them out and find the ones you want to spin for real.

Things we considered in details:

The popularity

Why are online slot machines so prevalent? The popularity of online slot games can be attributed to many various factors. Here are five reasons why.

Remote access

To play slots at a land-based casino involves dressing for the occasion and leaving the house. However, to play a slot online, you only need a smartphone to easily access many games.

Multiple slots

Variety is king. Whatever your tastes, there are endless options. Developers continuously add new and exciting titles, each with its own rules and unique features.

Apps and graphics with expert design

Competition among software developers looking to launch a new slot is stiff. They must ensure that the game has appeal. They achieve this by adding a storyline, often from popular movies, books, or songs. Graphically, slots have come a long way over the decades. No more dull reels with bland graphics. Nowadays, slots are bright, glitzy, and dynamically designed.

Simple and safe payments

Loading up a slot and making a deposit couldn’t be easier. In addition, reputable online casinos have the highest encryption to ensure your safety.

Attractive promotions and bonuses

With stiff competition amongst online casinos, most offer incredible incentives to get you to join. Free spins, deposit bonuses, and even no-deposit bonuses can be found. Players use these bonuses to their advantage and have a lot longer playing time when spinning with all the extra funds. 


If you are new to slots, you might not know what RTP (Return to Player) is. Each slot is designed with a theoretical RTP. Essentially, this is the house edge of the amount the sites will gain from players. An example is if you were playing a slot with an RTP of 95%. For every $100 you spin, the casino will keep $5, and you will keep $95. However, each player’s experience will be entirely different. While one could walk away with a few hundred after hitting a few features, you might have spun through all your money. Therefore, the RTP has been calculated over the slot’s lifetime.

The Volatility

Another essential factor to consider is volatility when choosing which slot to play. The volatility comes in three ranges:

Low Volatility

Low volatility slots generally do not come with many bells and whistles. There will be few features, and it will be less exciting. Still, you can expect to win small to medium amounts reasonably often.

Medium Volatility

A medium volatility slot will have more features, such as free spins or even a jackpot game. The winning spins will be less frequent than in a low volatility slot, but the payouts will be more significant.

High Volatility

High volatility slots are known for big payouts.  However, the downside is that you can go many spins without a sniff of win. In addition, they are generally full of features including free spins, cash prizes and even progressive jackpots. If you are a risk taker then this type of slot would suit you.  If you can handle the bumpy ride on this type of slot and have the bankroll to sustain a losing run, it could prove profitable. 

The Winning Rates

A winning rate is the frequency at which you win on a slot machine. The average falls between 25 – 27%. Every fourth spin should payout, even though it might be small. Highly volatile slots generally have a win rate of 20% or lower. While low volatility slots can have a win rate of 35% or higher, offering more consistent payouts.

The Bonuses & Promotions

Who doesn’t love some free cash? As online casinos have grown, so have the offers available to entice new customers. Unfortunately, most bonuses available are generally only available to play on slots. Some sites might allow it to be played on table games, but to be sure, always read the T&Cs. Some popular options offered by casinos include the following:

Welcome Bonus

A welcome bonus is offered when you register and open a new account. They can range from 100% to 400% bonus on your first deposit. Some come in multiple parts. For example, your first three deposits will qualify for a deposit bonus. In addition, you could also receive free spins on the top slots as part of the offer. The bonus awarded will also come with wagering requirements. For some, you only need to wager the bonus, while others need you to wager your deposited amount and the bonus. 

No Deposit Bonus

This is every gambler’s dream, join, and without needing to part with any cash, you can receive free money. It can range from $5 up to $20. The wagering is typically high, and there will also be a maximum amount you can cash out. However, it is a great way to make some free extra cash.

Free Spins

Casinos love free spins, and it is also a great way to try out some new games. Any winnings that get made will need to be wagered before you can request a withdrawal.

Ongoing Offers

The sites will want you to return and, therefore, will offer ongoing incentives. These can include deposit bonuses, free spins, VIP status, and more. You will receive an email with any news, or you can also log in and check the promotions page to grab any new offers.

Where to Play and How to Choose an Online Casino to Play the Most Popular Slots in 2023

Game selection

First, you want to make sure there is enough choice for you. For example, suppose you prefer to play slots. In that case, a decent range is available from various providers with different styles, layouts, themes, and bonuses. 


Security is paramount. When you register, you must give your personal and financial details online. If any of those were compromised, it could cause severe headaches. So, you want to ensure that any site has all the relevant licenses and will protect you during your time online and offline. 

Fast payouts

If you hit a decent payout, you will want it back in your bank as quickly as possible. So, check the site and what the processing times are. Some process payouts in a matter of seconds, while some can take days to receive your money.


Not everyone has a desktop or laptop at home; therefore, the mobile device is number one. All our top games are optimized to be fully compatible for ease of play when you are on the go. The graphics and quality are identical, albeit with a slightly smaller screen.

Our choice


Here is why!

You can play all our top 10 slots here; however, Betssen also offers a Live Casino, a Sports section, e-sports, and more. From the moment you step inside this well-laid-out site, you will not want to go elsewhere. There are numerous payment options with fast, free withdrawals and games from top software providers. Promotions include welcome bonuses, tournaments, and lots more to keep you entertained. Customer care is top-notch and will assist with any questions. So why don’t you head over and see what all the fuss is about? You can be playing slots, roulette, or placing a bet in no time.


What is a progressive jackpot?

A progressive jackpot is when the prize pots fill up on a tiny percentage of your total spend each time you play a jackpot game. You can play jackpots that offer millions if you hit the major prize.  Certain jackpot games do have a minimum spin size to activate the feature, so always check before playing. In addition to the life-changing jackpot sums, there is also usually a midi, mini or minor jackpot alongside the major, offering some decent payouts.

What is a wild symbol?

The wild symbol acts as all other symbols on the reels, which can help you to achieve some decent winning combinations. They do not double up for scatter or bonus symbols, just the regular paying ones. In addition, some games offer wild reels that can expand to cover one or more entire reels, which can be a thrilling and profitable experience.

What is a scatter symbol?

The scatter is the symbol you will need to receive free spins or other bonus features. Sometimes you get a payout for a combination of them, while some games do not payout but still award a feature.

What is RTP?

Return to player is the house edge of the game.

Therefore, the higher the RTP, the better it is for you, and you should expect higher returns.

Real Money Casinos to Avoid (blacklisted)

There will always be unscrupulous operators, and you must ensure you have done all your research. If others have had a problem, there will generally be a bad review online. 

A few we recommend you stay away from for not paying out include Cool Cat Casino, Ruby Slots, Slot Madness and Slot Nuts. Additionally, Casino Moon, City Tower Casino, and Spins Casino have T&Cs that are not fair. We suggest you stay well clear here too.

Information on addiction and problem gambling

If you or someone you know might have a gambling problem, we recommend that you seek help: – relevant information resource on the risks associated with online gambling.

CPGCB – a helpful resource to help you avoid and educate yourself on how to stay away from problem gambling. – a great resource for residents of any province in Canada who think they might have a gambling problem. – Located in London, Ontario and offers help to all Canadian residents. They can be contacted at (519)439-0174.

DISCLAIMER: The numbers of the Short Stats, are based on the research made on the internet data, and they may not be accurate. Therefore, if you want to play based on those statistics, consider them inaccurate.