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Online slots machines ride the rising wave of popularity on the currents of online casino entertainment. All you need is access to the Internet, and some free time, to enjoy any of the hundreds of titles on the market. From the timeless classics to interactive, brand-new online slots, you’ll find everything you’re looking for. Try out a variety of casino demo games for free, or wager real money for a chance to win!

If you’re just starting out, join us as we dive deeper into the realm of slot games and find out more about where to play the best online slots. Here are a few things you should keep in mind before you decide which slots to play.

Play Free Online Casino Slot Games no registration and no download. The Selection – It is Going and Growing. Our selection of Free Slots features the most famed titles in the industry, so feel invited to join in the fun, start the game and prepare to win. Over 6,192 FREE Online Slots Games to play (2021) - Play free slot machines from the top providers. Play Instantly, No Download or Registration required! I’m a self-confessed expert when it comes to playing free slot games online. I’ve been spinning the reels of slot games since the very first online casino went live in the 90s. All these years of experience mean I know what makes a great slot, and I’m going to share my secrets with you right here.

WHAT ARE ONLINE SLOTS?

Online slots are digital renditions of the traditional slot machines, with colourful graphics and a variety of gameplay mechanics. All across the board, you will find familiar sets of reels, a few buttons to adjust the settings, and a prominent ‘Spin’ or ‘Play’ button. The best online casinos have a large offering of slot games from game studios around the world, from classic fruit-themed slots to innovative, modern games with bonus features and interactive gameplay. The outcomes of each spin are regulated by a complex algorithm and RNG, due to which all possibilities are guaranteed to be random.

The very first slot machine, “Liberty Bell”, was invented in 1895 by Charles Fay, a car mechanic from San Francisco. It was an instant success and quickly became a staple of every land-based casino. The first online slots were replicas of the original, relying heavily on the time-tested one-arm bandit style, complete with the box and lever look and feel. Technological advancement facilitated the move of traditional slot machines to the digital era when computerisation allowed for the addition of previously unheard of features and the upload of video slots online. Players could now enjoy a much wider variety of games from the comfort of their homes, with varied betting options and even play free online slots. Developers and designers are constantly exploring new creative directions, steering modern slot games toward interactive, video game-like experiences.

Many casino slots stick to a classic setup of 5x3, minus the mechanical gears and levers, that easily translates to online platforms. Symbol combinations are generated through entirely automatic spins, using betting settings specified by the player. If the symbol combination(s) match one of the game’s paylines, the player will be credited with the winning amount. If players are wagering real money, their winnings will be credited as cash to the account balance. If players are trying out the game using the free-play demo version, all wagered amounts and winnings are completely virtual and will not be credited to the player’s account. Depending on what you are looking for, choosing the right slot can be both simple and complex.

BEST ONLINE SLOTS

No matter what you’re looking for, there is a slot game out there which you might find entertaining. There are numerous game development studios that have their own unique styles and a large selection of themed games. Some of the most popular online slots are the classic, minimalist games that are perfect for beginners and experienced players alike. There are no complicated features, the graphics are not so flashy, and the sound effects are kept to a minimum. There are a variety of themes on the market for this genre of slots, but more often than not you will find familiar symbols and a typically high RTP. If you’d like to try out top online slots with classic mechanics, take a look at Sizzling Hot™ Deluxe, Ultra Hot™ Deluxe, or Mega Joker™.

Slots can also be classified according to the number of reels. The first slot machines used to have only three reels that were set in motion by pulling a lever to the side, which gave origin to the name of this classic setup: one-armed bandit. Later on, more complex slots were introduced, with more reels and options. Currently, online casinos offer a great variety of slots with a diverse number of reels, rows and paylines. In regards to the number of reels, one can differentiate the following slots:

• Slots with three reels are the classic box-style games. The design, gameplay and functions are very simple. They are often inspired by the old-school slot design, so they typically have classic symbols and retro themes. They are easily operated, have no complex bonus rounds, special symbols, free spins or other elaborate mechanics. Ultra Hot™ Deluxe or 777 Hot are two of the most popular 3-reel games.
• Slots with five reels are the most abundant in today’s casino market. There are five spinning reels that usually offer more symbols and payouts, which makes your game even more entertaining. These slots over a variety of slot types like Vegas slots, online fruit machines, animal-themed slots, historical slots and many others. They can also offer special symbols and additional bonuses. The examples of 5-reel slots are Starburst™ and Gonzo’s Quest™.
• Seven or more reels is a deviation from the ‘gold standard’, but they offer action-packed gameplay and often feature more paylines than the classic slots. There are games that feature flexible reels, or additional reels that can be unlocked as you progress through the game. Today, slot games come in all shapes and sizes for every playstyle! When it comes to these more advanced online slots, the creativity of game developers knows no bounds! The number of reels, paylines, and symbols will vary from one slot to another. The premise of the game remains the same, but you will come across unique bonus features, level progression, free spins, and symbols with special functions. Some video slots offer mini-games, where players can solve puzzles, control characters or get access to even more features. Not to mention the stellar graphics and sound effects that take every game to another level! Some of the most popular games of this type are Book of Gates™, Jumanji and Reactoonz.
• One of the most exciting features of many online casino games is the jackpot. Some slots offer progressive jackpots on top of regular winnings, which accumulate as players make real-money wagers. The way it works is that a small portion of each real wager is allocated to the jackpot; the more players play — the greater the jackpot. There is no upper limit that a jackpot can reach, and it will only decrease if one of the players wins the grand prize. Jackpots can be small and large, the amounts will vary from game to game. Occasionally games will have weekly or even daily guaranteed jackpot drops. Mega Moolah and Mega Fortune™ are the most popular games of this type.

DEMO SLOTS

Over the years the market has become saturated with so many slots of every theme and genre that you can think of. Trying to choose the best one out of hundreds of games can be particularly difficult for inexperienced players. We always recommend trying out the demo versions, as playing free demo slots online is a great way to check out the game without risking your real balance. Players can enjoy free online slots with bonus features to the fullest! Keep in mind that all winnings and wagers in free online casino slots are entirely virtual. To access these demo slots online, search for the game of your choice and look around for a ‘DEMO’ button on the thumbnail or the game’s page. To enjoy free online slots, no deposit is required, but access may be restricted depending on the player’s jurisdiction.

If you don’t know where to start, here are some suggestions of the best online slots for newcomers:

• One of our favourites is Sizzling Hot™ Deluxe. This classic game is a fruit-themed slot with triple sevens, featuring five reels, three rows, and five fixed playlines. There are eight symbols: cherries, lemons, plums, oranges, grapes and watermelons, stars and Lucky 7’s. It is the ‘7’ that has a chance to award the highest wins and may help you win a multiplier of 5,000, applied to your winnings. The winning combinations of cherries count in groups of two or greater, and all other symbols must have at least three symbols on a winning payline. Sizzling Hot™ Deluxe has a relatively high RTP of 98%, and several equally thrilling renditions. The popularity and instant success of the game led to the release of other fantastic titles in the same franchise: Sizzling Hot™ Gems, Sizzling Hot™ Quattro, and Sizzling Hot™ 6.
• Another stunning game is Book of Ra™ Deluxe. It features a 5x3 setup with 10 adjustable paylines, which can be regulated by the player. There are 10 symbols in Book of Ra™, including traditional card royals and thematic ones like the scarab, statue, pharaoh, a smiling adventurer and the fabled Book of Ra. This fantastic slot also offers a bonus Free Spins round.
• Starburst™ is, without a doubt, the best slot to play online as a casino newcomer. This otherworldly game from NetEnt is a perfect blend of classic gameplay and modern features. Anytime the player lands a Wild, the glistening star symbol, it will stick in place and prompt a free Respin on the other reels. This feature can trigger up to three times in a row!

If you’re still not sure whether or not you would enjoy these online slots, browse around for other games that might tickle your fancy! Use search engines to look up ‘top online slots UK’ or ‘best casino slots 2021’ to see what other games top the charts for players around the world.

FREE ONLINE SLOTS VS REAL-MONEY WAGERS

When choosing to play slots online, players can opt to play free online casino slots through the demo mode. Although it is impossible for a player to win real money in a demo mode, as all wagers and winnings are completely virtual, playing free slots online is a great way to see what the game has to offer! In some jurisdictions, demos may be available only to players who have registered and verified their casino accounts.

Playing free slots with bonus features is great, but winning real money is better! To enjoy the best slots online with real wagers, players need to have a registered and verified account with sufficient funds to make the wager. Once the process is complete, players can enjoy their favourite slot online, win real money and play through all of the game’s fantastic bonus features. Keep in mind that to enjoy an online slots bonus, like EnergyCasino’s Weekly Bonus or Reload EnergySpins, players must meet the redemption requirements with real bets.

SLOT GAME BONUS OFFERS

Online casinos, like EnergyCasino, offer numerous promotions and casino bonuses to help you get started on your journey. You will come across Welcome Bonuses, win multipliers, Reload EnergySpins, Cashback rewards and even free spins. Some casinos may also have No Deposit Bonuses as well, which are rewards that can be claimed without depositing any real cash. Most commonly, this type of bonus is a Free Spins No Deposit offer which allows players to enjoy fantastic online slots, real-money wins and awesome gameplay at no cost!

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Always make sure to read the Terms and Conditions of each bonus offer, as your winnings may be subject to a wagering requirement. A wagering requirement means that any winnings, or the bonus amount, must be turned over a certain number of times. The T&Cs will also specify if there are any restrictions, such as which slots can be wagered on, time limits and minimum bet specifications.

Certain bonuses may not be available in all jurisdictions.

HOW TO FIND AND CLAIM AN ONLINE SLOTS BONUS

To find the best casino bonus, you’ll have to do a bit of digging. As you browse around in search of where to play, look for online casinos with positive player reviews and reputable licences. Take a look at the available payment methods as well; if you prefer using a mobile device to play online slots, PayPal payments or MuchBetter may be easier to manage on the go.

Once you have narrowed the list down to a few favourites, take a look at the casino’s promotions and bonus offers. Make sure to read through all Terms and Conditions of every offer, as they will stipulate important eligibility and redemption criteria that may impact your choice. Keep an especially close eye on wagering requirements, expiration dates and the qualifying games. You may find plenty of attractive bonuses with heaps of free spins, but don’t forget that the wagering requirements in the allotted time frame may not be feasible!

Players who have registered at EnergyCasino, and are ready to claim their first fantastic slots bonus, can do so by heading to the ‘Deposit’ page. From there, select your preferred payment method and make sure that the bonus offer of your choice is selected. Once the transaction is processed, you will be able to enjoy your bonus and play the best online slots around!

FAQ

⭐ARE SLOTS LEGAL?

Gambling is subject to regulations, even if you are playing from abroad. All countries in the European Union have their own legislation to regulate gambling and limit real-money wagering on slots strictly to licensed casinos. Land-based and online casinos are all subject to these regulations, which can be helpful when choosing where to play.

⭐HOW TO PLACE A REAL WAGER ON SLOT GAMES?

To get started, simply register an account with EnergyCasino! It’s a quick and easy process, but keep in mind that in accordance with regulations you must be verified through the electronic verification tool and/or provide a form of ID, bank information, and other personal info to complete the process. Once your account is activated, you will have full access to our portfolio of over 2,000 incredible online slots, live table games, daily tournaments and exclusive rewards. To place a real wager, you will need to make a deposit. The amount you choose to deposit is entirely up to you, there will be no additional fees and any necessary currency exchange will be processed by the casino automatically.

⭐IS IT POSSIBLE TO PREDICT THE OUTCOME OF A SLOT SPIN?

No, it is not possible — slots are games of chance! This means that each spin is not linked with the previous one and there are no repetitive sequences in the game. Each outcome of a spin is determined by RNG, which is an algorithm set in place by the game’s provider.

Although some lucky players may snag the best payout, online slots can never guarantee a win and the outcomes cannot be manipulated in any way to increase the chances of landing larger wins. Casinos do not influence the slot’s payouts, RTP, volatility or any of the game’s features.

⭐CAN I PLAY SLOTS FOR FREE?

Almost all online casinos offer demo versions of their slot portfolio. This is a test version of the game, where all wagers and winnings are in virtual currency. Depending on your jurisdiction, you may be asked to register and complete the verification process to access the demos. In cases where verification is not necessary, you may be able to play as a visitor.

Playing free online slots is an excellent way to test the waters or to familiarise oneself with the mechanics and rules of the game. Use these free slots with bonus features to get a hang of what to expect when wagering real money. Keep in mind that it is not possible to win any real cash in demo modes, as all winnings and wagers are entirely virtual.

⭐CAN I WIN REAL MONEY WHEN PLAYING SLOTS?

Yes. To win real money, you need to have a registered account and make a deposit. Don’t forget to take advantage of available promotions and offers, like a Welcome Bonus. Always make sure to read the Terms and Conditions of each bonus offer, as your winnings may be subject to minimum wagering requirements or other restrictions, such as availability by jurisdiction. Winnings can be withdrawn from your account using the withdrawal form.

⭐CAN I TRY SLOTS BEFORE PAYING IN THE DEPOSIT?

No problem, you can do it with the demo version. Players can enjoy hundreds of free slots online, without staking a real wager! To access the demos at EnergyCasino, search for the game of your choice and hover over the thumbnail until you spot the ‘DEMO’ button. Click, and enjoy!

⭐WHAT IS RTP?

The RTP of a slot is the Return To Player, which is a term used to describe the theoretical percentage of all wagered money that the slot will return to players over time. For example, if you wager €1 a hundred times on a slot with an RTP of 90%, you may expect about €90 in winnings over time. However, since casino slots are games of chance, and this return is never guaranteed — treat it as a theoretical average. While some players may see a relatively accurate return over hundreds of spins, other may not. The best way to find a game’s RTP is through viewing the in-game menu or accessing the game’s page directly on the provider’s website, where all features of the game will be specified.

⭐WHAT TYPES OF JACKPOTS ARE AVAILABLE?

Not all slot games have jackpots as a feature, but those that do often offer a variety of jackpot pools. Some games have fixed jackpot amounts, like Mini and Mega jackpots, that are randomly awarded. Others have the more popular progressive jackpot, where a percentage of each wager made on the game is added to the total jackpot pool. Progressive jackpots are particularly attractive because they tend to run well into the millions over the course of weeks and months.

⭐CAN I PLAY SLOTS AND WAGER REAL MONEY ON MOBILE?

Most online casinos offer games on desktop and mobile platforms. You can play these games directly through the casino, or by downloading the game-specific applications. Not all games have a mobile counterpart, but providers tend to continuously release new and improved mobile-compatible versions even for the oldest of slots.

⭐HOW CAN I WITHDRAW MY WINNINGS?

Withdrawing your winnings is simple: visit the ‘My Account’ page to make sure that your personal and banking information is up to date, then proceed with the withdrawal request.

⭐HOW TO PLAY SLOTS?

Getting started is pretty easy! Most slots will have a detailed description, or an in-game ‘INFO’ tab, where you can find in-depth instructions and additional information like the paytable, paylines and bonus feature descriptions. Slot games tend to feature a uniform user interface, with core functions prominently displayed. You will always have a few buttons to adjust your wager, pull up the instructions and the equivalent of a ‘SPIN/START’ button. The reels will spin automatically, landing on a random combination of symbols. If there are enough identical symbols on any given payline, you will be credited with the respective winnings. Symbols will often have different values, so the amount you win depends on the combination at hand. Keep in mind that some symbols have special features, like Wilds that can substitute for other symbols or Scatters, which can award free spins in some games.

⭐CAN I WIN REAL MONEY ON FREE SLOTS?

This is not possible. A wager made virtually will yield virtual winnings. These winnings are not associated with your account, are entirely virtual, and can in no way be converted into real currency. To win real money, you will need to stake real cash.

⭐WHAT ONLINE SLOT FEATURES CAN I EXPECT?

The features you will encounter depend on the games that you play. Classic slots tend to keep bonus features to a minimum and rely heavily on the traditional layout and a handful of fixed paylines. More advanced slots will offer extra features like Wilds, Scatters or bonus rounds. Occasionally you will come across other exciting mechanics like Expanding symbols, Hot Spots, and Wheels of Fortune. Always make sure to check the game’s instructions, as the functionality of these symbols can differ from game to game. For example, the Wild symbol often substitutes for any other symbol, but in many slots, it can also have additional functions (like the dual Wild/Scatter) or restrictions on which symbols it can substitute for.

⭐ARE ONLINE SLOTS TESTED FOR QUALITY ASSURANCE?

Online casinos are heavily regulated and all games go through a lengthy testing process by external auditors to ensure that they function exactly as advertised. We care about the security and quality of your gameplay — we always implement new safety features and work with the best game studios around the world to improve your experience.

⭐WHICH GAMBLING GAMES ARE THE MOST POPULAR?

Game providers offer many titles that you should consider trying out. Sizzling Hot™ Deluxe, Ultra Hot™ Deluxe, Mega Fortune™, Gonzo’s Quest™ — are only some of our favourites. Check them out and have a look at the hundreds of others on our platform. Good luck and have fun!

Giddy up! It’s time to mount a horse and enter the field of battle as the Black Knight where big wins await should you return victorious in defeating your enemy!

A Knight was a mounted warrior who was skilled in battle on horseback and often depicted covered in body armour with a slit in the helmet to see out of, clutching hold of a large shield for protection while aiming a lance (the long spear which caused devastating impact), plus they also possessed swords too in case of close quarter battles if they were disposed from their horse.

While the title ‘Black Knight’ may sound like it is based on a historical figure, those of you clued into your history will already know that no such character ever existed. Instead, it is simply a generic slot based on the mounted warriors – but don’t let that put you off as there are big wins in the free spins mode of this medieval adventure!

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A Brick and Mortar Classic

Like many of the online slot machines developed by WMS, they first gained popularity on the floors of brick and mortar casinos in Las Vegas, proving such a hit that online versions were then created and the Black Knight slot machine is no different. Thanks to its bright and engaging design which harks you back to the interesting medieval period, it boasts a return to player percentage of 96.07% and is played across 5 reels and 30 paylines – a standard setup unlike many game engines that WMS utilises and cause new players to feel confused. The stakes are equally as generous too with bet per payline options from 1p up to £5 for a minimum spin of 30p and maximum of £150 each and every spin.

Medieval Symbols but Not Sounds

If you’re a fan of the medieval period (whether it be watching movies or reading books based on such times) you’ll love the symbols that feature in the Black Knight slot machine, with ten in total and not a playing card in sight!

The special symbols consist of the helmet of a Knight which is the Wild and substitutes for all symbols but only appears on the second, third, and fourth reels, while the gold Knight chess piece on a black shield trimmed with gold is the Feature symbol. There is also a King, a Queen, the Royal Jester, a crown, gold ring, map of France and England, royal gold accessory, and a sceptre.

With a slot machine based the Knights of the medieval period you’d expect sounds of horses cantering, the loud clashing of swords, the impact of lances striking the enemy and so on, but nope - none of that. Instead it is bitterly disappointing standard sounds that you’d expect to encounter in an online fruit machine that play out instead which contributes nothing to the theme unlike Microgaming’s Game of Thrones slot machine which makes you feel part of the action instead!

The Black Knight Holds Position

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Having a free spins mode as the sole feature is a common occurrence in slots machines from WMS , and the same goes for Black Knight – it’s the only feature. It begins once you land the Feature symbol on the first, second and third reels during the same spin and rather than being awarded a Knighthood it’s seven free spins you receive. While that may sound like a small amount that is not worthwhile spinning the reels for, the expanding sticky Wilds certainly make up for it. When this lands on the second, third and/or the fourth reel it expands to cover the while reel and then remains in place, and should you manage two or three of these during the feature prepare yourself for a big reward for your duty from the King!

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This Warrior Has Been Upgraded

This is the original to the Black Knight 2 slot machine which is a significantly updated and improved sequel. While the graphics here immerse you in the medieval period, the sounds are incredibly disappointing as they are stock sounds used in numerous other WMS slots rather than being unique and adding a battle atmosphere to the reels. Despite 7 free spins appearing to be a measly amount the sticky expanding Wilds never fail to see you rewarded like a Knight should be for their loyal service!