Best Slot Sites 2021

Best Online Slots to Play in 2021

Slots comprise about 70% of an online casino, and gamblers love to spin the reels on these no skill machines. All you need is money to wager, and luck wins your jackpot or highest win. Bonanza Slots features some of the best online slots titles in its arsenal, and players can wager with real money on hundreds of slot games available on both desktop and mobile.

Register to Bonanza Slots and deposit only €10 in your casino account to claim the welcome offer to win up to 500 free spins on Bonanza Megaways (FULL T&Cs APPLY). You get access to the best online slots in the game lobby to have some fun and win cash rewards. Read this best online slots ultimate guide to know what's trending in the casino world and what's not.

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What Are Best Online Slots Today?

Online slots games highlight almost all online and mobile casinos, and players frequently try their luck on the reel-spinning machines. It's 2021, and the competition is more challenging than before. It's essential to understand what factor to consider when looking for online slots. Here are some of the factors you should consider when choosing real money slot games.

  • Return to Player: The first factor to consider when choosing slot games is its RTP. High RTP slots offer a more considerable sum of a payout than low RTP slots. Its an indicator for players what to expect in return when playing online slots
  • Aesthetic: Advanced technology results in dramatic changes in slot games aesthetic. Gone are the days when slot games display blurry pictures or 2D graphics. It's essential to choose a slot game with smooth and impeccable graphics enhancing the gameplay. Bonanza Slots feature HD graphics and animation slots from reputable software brands to boost the player's gaming experience.
  • Volatility: First thing RTP and volatility are not exact; the former represents the percentage of return payout while the latter determines your winning frequency. You will find slot games with low, medium and high volatility online casinos. The variance will detect the frequency of payout by a slot game.
  • Payouts: Payouts are an essential factor of any slot game, and the RTP and volatility play an essential role in determining. It's important to know that besides RTP and Volatility, many other factors affect the payout, like bonus rounds or jackpots.
  • Jackpots: 2021 bring along many best online slots that offer huge jackpot or progressive jackpots. A single spin can win you thousands or millions in a single spin. Bonanza Slots feature a separate section for jackpot slots that highlight their importance in the casino world.
  • Bonus Rounds: Online Slot games are no fun without extra spins and bonus cash rewards rounds. Always consider the bonus rounds of online slot games before playing. The more bonus spins or rounds, the better your chances to boost your payout.

Best Slot Sites 2021

What To Expect From the Best Slot Sites

You will find all the best online slots or reputable casinos. However, it's essential to consider some factors before joining an online or mobile casino. The factors include:

Extensive Slots Collection

When joining an online casino, it's essential to know what they are featuring in their slots collection. They should have a wide variety of slots, including video, classic, jackpot, progressive jackpot, and mega ways. You should expect an exciting gaming experience with the slots available in free mode or a real money wager. Bonanza Slots offer a wide range of slot games for real money with a deposit of €10, and you can also enjoy bonus spins on many slot games through different bonus offers in the promotion section (FULL T&Cs APPLY).

Reputable Gaming Software

Reputable slot sites offer slot games from reputable gaming software brands that guarantee fair gameplay. Some of the best gaming software developers in the casino market are Microgaming, Playtech, Pragmatic Play, NetEnt and many more. Online slots from reputable software give players assurance of HD graphics and smooth gameplay. The HTML5 technology these developers used offers mobile users an impeccable gaming experience on their compact screens. Bonanza Slots is a licensed online slot site that guarantees fairness by using RNG technology slot games.

Generous Welcome Bonus

Welcome bonuses are the first feature players checkout of any online casino. Reputable online slot sites use high paying slots for bonus spins to offer kickstart to players on the online casino without spending much.

Great All Round Gaming Experience

When choosing an online slot site, the casino operators must consider all aspects of gambling. Ensure that the casino offer a rewarding VIP program, tournaments and ongoing promotions. Quality games and extensive collection is another factor that players should not neglect when deciding.

Best Slot Sites 2021

Best Slots Bonuses 2021

Many online slot sites solely focus on online slots and give players ample options to choose from. You will find many casino promotions featuring slot games targeting slot enthusiasts. Some of the slots featuring promotion on the casino website are:

Free Spins

Free spins are the most significant gift for slot fans, and they cater the slot lover cravings. Usually, online slot sites offer generous free spins numbers in their welcome bonus along with bonus matches. Players have to adhere to particular term and conditions to claim these free spins, which include:

  • Wagering the total bonus to cash out
  • Expiration dates
  • Selected slots
  • Capped amount

Bonanza slots give players a chance to play slots with free spins though many offer bonuses in the promotion section. You will get free spins daily or as part of the Loyalty program. A deposit of €10 gives you access to all promotional offers on the casino site.

No Deposit Free Spins

No deposit bonus offers are the most wanted bonuses in the casino world.

The online casino offers its players lucrative bonuses without depositing a single penny. It's a token of appreciation by the operators to new players.

These no deposit free spins are a golden opportunity for players to try slot games without any deposit. The best part is the bonus winnings through no deposit free spins are in real cash—register to the online casino offering free spins with no deposit and claim your bonus without any deposit. Usually, there are specific terms and conditions on the no deposit free spins, including particular time, slots, and wagering requirements.

Welcome Spins

Sometimes online casinos offer a generous free spin package to players separate from the regular welcome bonus. You may get free spins on all Microgaming slot games in the game lobby. Some of the popular online slots often offered as a free spin bonus are Starburst, Rich Wild, The Book of Dead, Viking Go Berserk and Dead or Alive.

Best Slot Sites 2021

How to Play the Best Slots?

Online slots combine different features and functions to offer an exclusive experience. Here are the significant features of a slot game that are important for players to know:

  • Coins/Bet: To place the stake on the slot game, players use real money or coins. The amount of coin or money determines your payout for every spin. The higher the bet you place, the more chance to win the maximum winning potential. You may have an option to switch between real money and coin. However, winning with coins is in virtual credits, while real money rewards players in real cash.
  • Volatility: Slot games volatility determines the frequency of wins on the games. The higher the volatility, the more frequent the symbols change on the reels and higher payout. Lower volatility offers regular wins but in small amounts.
  • RTP: Return to player is a percentage that players should expect when winning a slot game. The higher the RTP of the slot, the more you will get in return. It's essential to verify the RTP of the slot games before playing.
  • Paylines: Payline is a crucial part of slot games that vary from one slot to another. Classic slot games have low paylines up to 20, while video slots offer a hundred payline to form winning combos.

Free Online Slots vs Real Money Slots

You will find two types of slot games in the gambling world, one for free, while the others require a real money wager. Usually, all slot games come with both options: you either stake with virtual coins or deposit in your casino account to play with real cash. Both Slots comes with pros and cons, which are as follows:

Free Online Slots

Real Money Online Slots

Many reputable online casinos offer a demo or free play on slot games; you only need to register to the casino to play the slot games. Real Money slots are available on all casino platforms; you have to deposit funds in your casino account to stake with real money.
The rewards are in virtual credits that do not add to your bonus winnings The rewards are in real cash that adds to your bonus wings, and players can cash out after clearing the wagering requirements.
You can enjoy all the bonus rounds on the slot games with your coins All bonus rounds are available that boost your payout on the slot game

Bonanza Slots offer players a chance to play free slot games with bonus winnings. You can accumulate winnings from free spins on Bonanza Megaways and use them to place stakes. You need to deposit at least €10 in your casino account to get access to any slots game of your choice.

Different Ways to Play & Win at Online Slots

Slots players are always looking to find new ways that can improve their winning chances on slot games. Let us make one thing clear that anyone promising a winning strategy on a slot game is either a scam or novice. Specific online slots gameplays can increase your winning chances and swing the odds slightly in your favour, but these are only tips, not insurance.

Slots players love to experiment with new gameplays unless they find that works in their favour. It means players learn from their mistakes, and practice is the primary key to success. You can join some forums to share your slot game blueprints and learn from others. Here are some proposed online slots tips that can help improve your gameplay.

Best Slot Sites 2021

Playing Style

You will find a wide variety of slot games on online casinos like Bonanza Slots, where the game lobby is full of popular and new slot titles. Each slot game has its exclusive features and bonus rounds. Each slot has an RTP percentage and volatility, which determine the frequency of wins per spin.

Low volatility slots offer frequent wins with a lower sum, whereas high volatility slots don't offer regular wins but higher sum. There are no stringent rules, but some players prefer high volatile games while others like to win frequently with low volatility slots.

Many slot games gain popularity because of their exclusive features or simply because they are products of high-quality brands. Slots like Starburst, Gonzo's Quest and Fluffy Favourites are fan favourites for many years because of their simple gameplay and unique bonus features.

Managing Budget

Gambling is an addictive hobby that often gets out of hand if not managed properly. If you fail to control gambling habits, it may leave you in a tricky spot chasing your losses. It's essential to allocate a budget before wagering real money on slots games and plan your exit strategy.

There are good days and bad days. We suggest allocating a certain profit level when you are on a winning streak. If you are sure to cut off before things get out of hand. Money management is essential because playing slots with money you cannot afford is never wise.

Types of Best Slot Games

Slots Games vary from one another in terms of features, graphics, animations and bonus rounds.

Classic slots are an example of basic online slots with minimal features and simple gameplay without any multipliers or free spins. There are titles loaded with flashy features and HD graphics.

Some slot games include jackpots which level up the excitement while playing the slot game. Try different online slots on Bonanza Slots to determine which suits you best in terms of features and functionalities. Some slot players love the thrill of chasing progressive jackpots, and others love the plain bonus rounds with free spins. Many slot games have high payouts, such as Mega Joker, Rainbow Riches and Blood Suckers.

Best Slot Sites 2021

Best Online Slots with Highest Payouts

Gaming developers create innovative slots daily, and you will find new titles every other day. It becomes challenging to know which slot games offer the Hughes payout. Here is the list of slot games that provide the highest payout in 2021:

Guns N' Roses

Guns n' Roses is a popular NetEnt slot game inspired by famous rock bands. You will find many band symbols and bonus features increasing your payout on the slot games. The best is the Encore Free Spin feature that makes the slot an epic release in the casino world. It's a five-reel slot game with a maximum winning potential of 2000x your total stake per spin.

Thunderstruck II

Thunderstruck 2 is a Microgaming release known among slots players for years. It's a Norse mythology-themed slot game with an RTP of 96.65% and high variance, promising a high payout of up to 8000x players total bet. The bonus features include free spins, wilds and multipliers that help players reach the maximum winning potential.


Starburst is one of the most popular slot games by NetEnt included in many promotional offers by casino websites. The maximum win on the slot game is 50,000x the original stake. The slot game has an RTP of 96.09% and low variance that gives players frequent chances to win on every spin. Released in 2013, Starburst still doesn't lose its charm in the gambling world.

Street Fighter 2

Street Fighter 2 is a popular slot game based on the famous fighting games released recently. NetEnt has beautifully captured the theme of the video game and done a remarkable job creating the graphics of the slot game. It's a medium to high volatility slot with cluster pays and haven for the high roller who can bet as high as €400. The fighter symbols on the reel are what makes the slot game extraordinary. The winning combos are created with different street fighters, and the multiple bonus features boost the players' payout. With an RTP of 96%, it's a must-try slot game if you want to experience something thrilling.

Bonanza Megaways

It's a classic slot game that you can play for free on Bonanza Slots with 500 spins as a welcome bonus. Deposit €10, and you can claim the free spin and win fantastic cash rewards. Bonanza Megaways is a popular title from Big Time Gaming and offers impressive bonus features that include free spins, multipliers and bonus rounds. It's a medium volatility slot game that has unlimited levels of total payouts. If you are looking for a high payout slot, then this slot game will not disappoint you with its features and visuals.

You can find all these slot gm=ames on Bonanza Slots and play with real money wager after depositing €10 in your casino account. You may get a free spin on these slot games if they become part of any bonus offer on the casino website.

Best Slot Sites 2021

Best Online Slots with Jackpots

Jackpot slots are fan favourites as they come with huge cash rewards with a single spin. However, not every player wins the jackpot, but there are always chances you could be the lucky winner. Here are some of the popular jackpot slots with huge winning potential:

Game Name Provider RTP Jackpot
Mega Moolah Microgaming 88.12% €17,879,645
Hall of Gods NetEnt 95.3% €7,820,888
Divine Fortune NetEnt 96.59% €640,721
African Legends Microgaming 94.92% €289,477
Mega Fortune NetEnt 96% €17,861,813
Joker Millions Yggdrasil 94.3% €3,114,303
Empire Fortune Yggdrasil 94.3% €5,197,198
Jackpot Giant Playtech 94.22% €10,897,701
Cash Splash Microgaming 91.62% €115,670

  *All of the above values are subject to change at any time.

Best Mobile Slots 2021

2021 is the year of advanced technology, and players love the gaming experience on their mobile screen. Online casinos are available on your smartphones with all features and functionalities. There is a multitude of mobile casinos offering players various bonus offers and extensive slot games. Bonanza Slots is a mobile casino offering players the convenience of mobile apps. You can register, deposit and play almost all slot games with a single tap. The process is simple: Register to the Boaza Slots through your mobile device and deposit €10 in your casino account. Claim the welcome offer to up to 500 free spins on Bonanza Megaways and get access to all online mobile slots to wager with real money or bonus winnings. Here are some mobile online slots of 2021 that will give you a thrilling gaming experience:

Rainbow Riches

Rainbow Riches is a famous Barcrest video slot game that made an appearance in the casino world in 2009. The slot games are available on desktop, mobile and tablets offering a seamless gaming experience. The RTP of the slot game is 95%, with a maximum winning potential of 500x total bet. It's a five-reel slot with the Magic theme and multiple bonus features to boost players payout.

Big Bass Bonanza

Big Bass Bonanza is the innovation of Reel Gaming and released in 2020. The video slot has an RTP of 96.71%, with medium to high volatility. You can play the slot game on Bonanza Slots mobile app or website with all bonus features and a chance to win 2100x your total stake.

Mustang Gold

A wild west themed slot game by Pragmatic Play that features in 2019. Mustang Gold is a bonus filled slot game with many amazing bonus rounds to boost players payout. You can enjoy the slot game on your mobile compact screen with a fantastic gaming experience.

Enjoy all these slot games on Bonanza Slots mobile website and app with flawless gameplay. You can play these slots with real money and win real cash rewards after depositing €10 in your casino account.

Best Slot Sites 2021

Getting Started with Online Slot Machines

Online Slot games gameplay varies from one slot to another, but the basics of each slot game are the same. Read the step by step guide to understanding the basic gameplay of all online slot games:

  1. Register to an online casino with a wide variety of slot games in their game lobby.
  2. Click on your favourite title from the game section.
  3. The reels unfold on the screen of your desktop or mobile screen.
  4. Read the paytable to understand the paylines, bonus features and symbols value. Premium value symbols are the best way to boost your payout on any slot game. The wilds and scatters are responsible for triggering bonus features.
  5. All the features of the slot games are usually present at the bottom of the screen.
  6. Adjust the bet or coin amount and paylines if adjustable
  7. Spin the reel with the Spin button adjacent to reels for manual spin mode
  8. Select auto spin feature for non-stop spins on the game. You can pause or stop the autoplay feature at any time.
  9. Some online slots offer a gamble feature that doubles your winning.
  10. Keep an eye on the wilds and scatters as they come with multipliers and huge cash rewards.
  11. If you are playing jackpot or progressive jackpot slots, make sure you choose the slot at a time when its jackpot is high.

 Best Slot Sites 2021

Best Slots Games Providers Today

Slot games are possible because of gaming software developers and their innovative ideas. You will find multiple genre and theme slot games on online casinos with exclusive bonus features and unique functions to keep players entertained. The variety of slot games is only possible because of the top-notch software providers. Here some of the best Gaming software brands in the gambling world:


Bally Gaming software is considered one of the best brands in the gambling world because of its timeless slot titles with exclusive features. Some of the famous titles from the vendor are:

  • Cash Spin
  • China River
  • Hot Shot Progressive
  • Cash Spin
  • Michael Jackson


Williams Interactive is a famous software brand responsible for offering multiple slot titles with bonus features and innovative ideas. You may find these slot titles from IGT exciting Cleopatra, Temple of Fire, Da Vinci Diamonds and Mistress of Egypt.


Microgaming is the pioneer of the casino gaming world. Slots fans love the creative themes of the Microgaming with HD graphics and premium soundtracks.

The vendor produces some of the most advanced slot games with 3D technology and unique storyline bonus features. Some of Microgaming's engaging titles include Immortal Romance, Mega Moolah, Thunderstruck, Game of Thrones, Break Da Bank Again and Jacks or Better.


NetEnt sure knows how to produce popular slot games like Starburst. The slot game is responsible for producing hundreds of slot titles with premium quality and HD definition. Gordon Ramseys Hells Kitchen, Gonzo's Quest, Irish Potluck, Twin Spin and Guns N'Roses are popular slot titles of the vendor.

Paying for Online Slots

Online casinos offer players an array of payment gateway to deposit and withdraw their bonus winnings. You will see multiple payment methods on Bonanza Slots for player convenience. Some of the standard payment gateways online casino features are:

  • Visa Debit
  • Maestro
  • MasterCard Debit
  • Pay By Mobile
  • Pay Safe Card
  • PayPal

Bonanza Slots players secure a transaction route to deposit or withdraw their funds from the casino. Using the above payment methods, you can deposit €10 in your casino account and play any slot game with a real wager.

Best Slot Sites 2021

Frequently Asked Questions

Players often have many queries when it comes to online slot games. This section will answer all the general questions regarding the best online slots.

Which online slot site is the best to join?

There are hundreds of online casinos in the gambling world, but not all are worth joining and spending money on. You must always check the license number and the regulatory body that assess the fairness and randomness of the casino. The online slot site should be compatible with mobile devices for the gaming experience.

The game selection is an essential aspect of any online casino-wide choice and must join a slot site. Bonanza Slots check all these boxes and provide a secure platform with an extensive slot games collection.

Which online slot game is the best?

The Gambling world is full of online slots, and there are thousands of slot titles from different developers. It's impossible to give a single slot game the best from the rest. It all depends on the player's preference. Players who like simple slots would love Starbucks, and Mega Moolah is a fan favourite for the jackpot lovers that promise a substantial winning payout to the lucky winners.

Are online slot sites trustworthy?

Online slot sites regulated by responsible regulatory bodies are the best to join. Players should only trust the slot sites under the jurisdiction of gambling commissions like UKGC, Malta and others. Always check the online casino reviews to know what others think about the site.

Can you play online slots on mobile?

Yes, online slot slots with java and HTML5 technology are compatible with mobile devices. You can play slots games on your mobile browser or app. Register to the slot site and deposit through your mobile device to access the slot games. Bonanza Slots offer players a mobile site and app for an impeccable gaming experience and access to hundreds of slot games with a single tap.

Can I win real money with online slots?

Online slots reward players with real cash rewards when they wager with real money. You can get a chance to win thousands by wagering on the slots with the maximum bet amount. Online slots with a jackpot have the potential to make players millionaires. Large or small online slots tend to reward players with real cash rewards if luck is at their side.


*All values (Bet Levels, Maximum Wins etc.) mentioned in relation to this slot game are subject to change at any time.

Best Slot Sites 2021