The Best Video Slots Online in 2021

Online video slots take up the majority of casino games offered at the best UK online casinos. It can get overwhelming selecting slots with such a wide variety based on their features such as RTP, payout per spin, bonus features, or volatility. This is why we have come up with a guide of the best online video slots, which makes it easier to find a game that best suits your preference.

 

Top 10 Best UK Slot Sites

RankBest Video Slot GameRTPBest UK Slot Sites
1
Hall of Gods
95.5%
BetVictor £30 Bonus + 100 Free Spins
Play
Casumo Casino 100% up to €300 + 20 free spin
Play
CasinoCruise €1000 + 200 Free Spins
Play
2
Starburst
96.09%
Cashimashi Casino 100% up to €200
Play
Slotty Vegas Casino £350 + 135 Free Spins
Play
Casumo Casino 100% up to €300 + 20 free spin
Play
3
Mega Moolah
88.12%
AmunRa 100% up to £300
Play
King Billy Casino €1000 Welcome Bonus+200 Spins
Play
Casumo Casino 100% up to €300 + 20 free spin
Play
4
Arabian Nights
95.62%
William Hill Casino €100 Welcome Bonus
Play
Rizk Casino Deposit €100, Play with €200 + 50 Free Spins
Play
Casumo Casino 100% up to €300 + 20 free spin
Play
5
Major Millions
89.37%
Unibet Casino Deposit €100, play with €200
Play
Mr Play Casino €200 Welcome Bonus & 100 Spins
Play
Twin Casino 100% up to €200+200 free spins
Play
6
Book of the Dead
96.21%
Twin Casino 100% up to €200+200 free spins
Play
Casumo Casino 100% up to €300 + 20 free spin
Play
32Red Casino 150% up to £150
Play
7
Thunderstruck
96.10%
Twin Casino 100% up to €200+200 free spins
Play
Playamo Casino €100 Welcome Bonus + 100 free spins
Play
Mr Green Casino Double Deposit + 200 Free Spin
Play
8
Game of Thrones
95%
William Hill Casino €100 Welcome Bonus
Play
Dunder Casino €100 + 100 Spins
Play
All British Casino 100% Bonus + 10% Cashback!
Play
9
Gonzo’s Quest
96%
Karamba Casino €200 Welcome Bonus & 100 Spins
Play
Casumo Casino 100% up to €300 + 20 free spin
Play
888Casino Up to €1500 Welcome Bonus
Play
10
Blood Suckers
98%
Casoo €200+200 Free Spins
Play
PlayMillion Casino 100% bonus up to 200€
Play
Mr Green Casino Double Deposit + 200 Free Spin
Play

 

Best Online Slots to Play in 2021

The best online video slot games are those that strike a balance between the big wins, reasonable volatility, huge jackpots, and high payouts. Recommendable slots for UK players that meet these expectations include Mega Moolah, Gonzo’s Quest, Starburst, Blood Suckers, and Thunderstruck.

 

Top Video Slots

RankSlotRTPProviderPlay
1
Mega Moolah
88.12%Microgaming
AmunRa 100% up to £300
Play
King Billy Casino €1000 Welcome Bonus+200 Spins
Play
Casumo Casino 100% up to €300 + 20 free spin
Play
2
Gonzo’s Quest
96%NetEnt
BGO Casino Win up to 50 spins
Play
Karamba Casino €200 Welcome Bonus & 100 Spins
Play
888Casino Up to €1500 Welcome Bonus
Play
3
Starburst
96.09%NetEnt
Cashimashi Casino 100% up to €200
Play
BGO Casino Win up to 50 spins
Play
Slotty Vegas Casino £350 + 135 Free Spins
Play
4
Blood Suckers
98%NetEnt
Casoo €200+200 Free Spins
Play
PlayMillion Casino 100% bonus up to 200€
Play
Mr Green Casino Double Deposit + 200 Free Spin
Play
5
Thunderstruck
96.10%Thunderstruck
Twin Casino 100% up to €200+200 free spins
Play
Playamo Casino €100 Welcome Bonus + 100 free spins
Play
Mr Green Casino Double Deposit + 200 Free Spin
Play

 

Mega Moolah

megamoolah-slot

Mega Moolah by Microgaming is one of the most popular slots among players and is dubbed as the ‘millionaire-maker. This nickname suits Mega Moolah perfectly based on its Guinness Book of Records of the online game with the largest payout ever.

Mega Moolah is a 5 reel slot with 25 paylines, and it features an African savanna theme. This slot has a massive progressive jackpot, and there are 4 jackpots that can be won during the base game. These progressive jackpots include the Mini, Minor, Major, and Mega Jackpot. The Mega jackpot guarantees a payout of up to £1,000,000.

The Mega Moolah RTP is 88.12%, with the minimum bet set at £0.01 up to a maximum of £6.25 per spin. Although the max bet limit is relatively low, you still get a chance to win either of the four jackpots.

 

Gonzo’s Quest

Gonzo's Quest - Cascading Reels

Powered by NetEnt, Gonzo’s Quest is a Mayan themed slot featuring 5 reels and 20 paylines slot. This slot has numerous bonus features to boost your chances of winning, including multipliers, scatter symbols, wilds, and free spins.

What’s even more rewarding are the Avalanche Reels, which are activated every time you match a winning payline. When this happens, the increasing multipliers up to x5 will help you land several wins in a single spin. Another feature to watch out for is the Free Fall feature, which comes with a boosted multiplier meter.

You can place your bet from as little as £0.20 up to a maximum of £50 per spin. Gonzo’s Quest RTP is 96%, and the most you can win in the base game is 2,500x your bet per line. However, if you are lucky to activate the avalanche feature, your wins will increase with every successive win up to a maximum of 5x.

 

Starburst

Starburst slot game

Starburst also tops the list of the best online video slots games in 2020 with its vibrant features and impressive bonus features that help boost your winning chances. The slot is developed by one of the leading software developers, NetEnt. One of the features that stand out in this slot is the Win Both Ways feature, which allows players to complete winning combinations from left to right and from right to left.

Starburst is a 5 reels slot with 10 fixed paylines, and you can set your wagers from as little as £0.01 up to a maximum of £100. Some of the lucrative bonus features to watch out for include expanding wilds and re-spins. With a 96.09% RTP, you can expect reasonable payouts.

 

Blood Suckers

Blood Suckers

Blood Suckers is another slot from NetEnt that ranks among the best UK slots. This vampire-themed slot features 5 reels and 25 paylines, and you can spin from £0.025 up to £50. There are several symbols that are designed to help you form winning combinations; they include scatter symbols, bonus symbols, and wild jokers. The bonus symbols include the Vampire Slaying bonus feature and the free spins features.

If you are lucky to land 3 or more vampire-slaying bonus feature, you could win up to 203.2x your total stake. On the other hand, landing 3 or more vampire bride scatter symbols could award you up to 100x your total wager plus 30 free spins.

You can expect the biggest possible payouts going up to 187,500 coins during the free spin rounds when you fill all the cells with Wilds. Blood Sucker has an industry-leading RTP of 98%, which is why this is a must-play slot.

 

Thunderstruck

THUNDERSTRUCK II

Another of Microgaming’s top online games is the Thunderstruck slot, which features 5 reels and 9 paylines. The Scandinavian mythology theme is well elaborated, more specifically Thor, the God of Thunder. The slot offers big wins courtesy of the many bonus features. You can start playing from as little as £0.09 up to a maximum of £45 per spin.

High paying symbols include Thor’s hammer, a horn, a castle, and similar items related to Norse mythology. Thor himself is the wild symbol and can pay up to 10,000 coins for landing 5 of the symbols on a payline. The Ram symbol is the scatter, and landing two of these symbols activated the free spins bonus. If you land 3 or more scatter symbols, you will receive 15 free spins and a cash prize going up to 500x your stake.

The Thunderstruck slot’s RTP is 96.10%, and while it does not have a progressive jackpot, the max possible win of 270,000 coins is an impressive amount.

 

Recommendable Progressive Jackpot Slots

Progressive slot games have a prize that increases every time someone plays, and the jackpot amount keeps on rising until a lucky player wins it. There is a wide selection of slot games that have a progressive jackpot. Popular progressive jackpot slots in the UK include; Mega Moolah, Mega Fortune, Arabian Nights, Cosmic Fortune, and Gladiator

 

Best Progressive Jackpot Slots

RankSlotPayoutProviderPlay
1
Mega Moolah
88.12%Microgaming
AmunRa 100% up to £300
Play
BGO Casino Win up to 50 spins
Play
Casumo Casino 100% up to €300 + 20 free spin
Play
1
2
Mega Fortune
96.6%NetEnt
BGO Casino Win up to 50 spins
Play
Casumo Casino 100% up to €300 + 20 free spin
Play
Mr Green Casino Double Deposit + 200 Free Spin
Play
3
Hall of Gods
95.5%NetEnt
BetVictor £30 Bonus + 100 Free Spins
Play
Casumo Casino 100% up to €300 + 20 free spin
Play
CasinoCruise €1000 + 200 Free Spins
Play
4
Major Millions
89.37%Microgaming
Unibet Casino Deposit €100, play with €200
Play
Mr Play Casino €200 Welcome Bonus & 100 Spins
Play
Twin Casino 100% up to €200+200 free spins
Play
5
Arabian Nights
95.62%NetEnt
William Hill Casino €100 Welcome Bonus
Play
Rizk Casino Deposit €100, Play with €200 + 50 Free Spins
Play
BGO Casino Win up to 50 spins
Play

 

Mega Moolah

megamoolah-slot

This is the most popular progressive jackpot slot in the UK. Developed by Microgaming, this slot not only has one but four progressive jackpots. These include Mini, Minor, Major, and the Mega Jackpot, each with a lower limit payout of £10, £100, £10,000, and £1,000,000 respectively.

About Mega Moolah

  • Largest paid jackpot: £13 million
  • Average period: about 122 days
  • Average payout: £2.1 million

 

Mega Fortune

top jackpots

Developed by NetEnt, Mega Fortune slot holds the Guinness World Record for the biggest jackpot ever paid. This slot has been providing progressive jackpot wins since 2009 and is one of the oldest games still available.

About Mega Fortune

  • Largest paid jackpot: £17 million
  • Average period: Around 70 days
  • Average payout: About £ 4 million

 

Hall of Gods

Hall of Gods slot

Hall of Gods slot by NetEnt has turned many players into millionaires with its mega progressive jackpot that tends to drop every 24 to 26 weeks.

About Hall of Gods

  • Largest paid jackpot: 7.8 million
  • Average period: Around 175 days
  • Average payout: About £5 million

 

Major Millions

top jackpots

Powered by Microgaming, Major Millions have lived up to its name where according to its statistics, the biggest payout made is £1.9 million and the least being £252,043.

About Major Millions

  • Largest paid jackpot:£1.9 million
  • Average period: About 33 days
  • Average payout: Approximately £1.4 million

 

Arabian Nights

Arabian Nights slot

Arabian Nights by the powerhouse NetEnt is a simple jackpot slot with the largest every jackpot to be won being £3.3 million. The jackpot feature can be triggered by landing 5 Aladdin wild symbols across a payline.

About Arabian Nights

  • Largest jackpot paid: £3.3 million
  • Average period:151 days
  • Average payout:£1.2 million

 

Online Video Slots with the Best Payout Percentage

As earlier mentioned, the best online video slots are those with not only high jackpots but reasonable payout percentage. Casino slots with high RTPs are highly recommendable, especially if you are looking to boost your winning chances. It is important to keep in mind that the theoretical RTP alone does not define the slot’s actual potential payouts. Thus, it would help if you considered other factors, such as the slot’s variance/volatility.

A high variance slot offers huge but less frequent wins, while a low variance slot offers small but frequent wins. Thus, if you are looking for online slots with the best payout percentage in the UK, you have to look into the variance. Here are some of the best paying online slots

RankSlotPayout PercentageSlot's Volatility
1
Book of the Dead
96.21%High
2
Bonanza
96%High
3
Blood External
95.03%High
4
1429 Uncharted Seas
98.50%Low
5
Reels of Wealth
95.29%Low
6
Starburst
96.10% Low
7
Game of Thrones
95%Medium
8
Reel Rush
97%Medium

 

Mobile Video Slots

Most software providers have optimized their portfolios to meet mobile gaming demand for both Android and iOS users. The best mobile slots allow you to place wagers and enjoy uninterrupted gameplay while on the go. Mobile casinos also allow you to either play from your mobile web browser or download a dedicated mobile app. Check out some of the mobile slots you can play at our recommendable mobile casinos.

RankSlot for MobileCompatibilitySoftware ProviderPlay
1
Mega Moolah
Android & iOSMicrogaming
Coral Casino Deposit £10 get £50
Play
LeoVegas Casino Free Spins No Deposit Bonus
Play
Casino.com €400 Welcome Bonus & 200 Spins
Play
2
Starburst
Android & iOSNetEnt
Casiplay Casino £800 + 100 Free Spins
Play
Ladbrokes Casino Deposit £10 Get £50
Play
Rizk Casino Deposit €100, Play with €200 + 50 Free Spins
Play
3
Gonzo’s Quest
Android & iOSNetEnt
Karamba Casino €200 Welcome Bonus & 100 Spins
Play
888Casino Up to €1500 Welcome Bonus
Play
32Red Casino 150% up to £150
Play
5
Goblins Cave
Android & iOSPlaytech
Energy Casino €400 Welcome Bonus
Play
Playamo Casino €100 Welcome Bonus + 100 free spins
Play
6
Rise of Olympus
Android & iOSPlay’ n GO
Grosvenor Casino Deposit £20 Get £20
Play
Dazzle Casino €200 Welcome Bonus
Play
Slot Planet Casino £222 on + 22 Free Spins
Play
7
Game of Thrones
Android & iOSMicrogaming
William Hill Casino €100 Welcome Bonus
Play
InterCasino £400 + 110 free spins
Play
All British Casino 100% Bonus + 10% Cashback!
Play

 

New Video Slots for Players in the UK

New slots are always being released and are available at both existing and new casino sites. You can find new releases from renowned software providers and upcoming developers, which offers a great opportunity to try new titles and explore what upcoming developers have for the market. Some of the new slots released in 2020 include;

RankNew SlotRelease DateRTPStudio
1
Dragon Tiger
5th November 202096.53%Pragmatic Play
2
Rise of Athena
12th November 202096.20%Play ‘n’ Go
3
Book of Kingdoms
16th November 202096.69%Pragmatic Play
4
1 2 3 Boom
18th November 202096.40%4ThePlayer
5
Yukatan’s Mystery
19th November 202095.75%Red Tiger
6
BountyPop
30th November 202096%AvatarUX Studios
7
Jingle Bells Power Reels
1st December 202095.78%Red Tiger
8
Katmandu Gold
1st December 202096.4%ELK Studios
9
Cyberslot Megaclusters
7th December 202096.36%Big Time Gaming
10
The Vault Heist
21st December 202096%FBM

 

Online Casino Video Slots Guide- How Do Online Slots Work?

Online video slots are the easiest games to play since they don’t have any specific strategy that players must use to win. You only need luck! Even so, there are various aspects that you should know about video slots to help you choose the best slots.

 

Types of online slots

Various types of online slots vary based on the number of reels, paylines, payouts, and features. Online slots can be divided into 5 key categories:

Classic slots- These slots are also known as ‘fruities’ and they commonly use symbols such as cherries, lemons, liberty bells, lucky 7s, and high poker cards.

Video slots-Unlike traditional slots, video slots don’t require mechanical levers and reels; instead, you just need to press a digital button to get started. Current video slots online fall under this category.

3 reel slots- This is the simplest form of online slots that is based on the classic Fruit Machine games. The slots feature 3 columns and 3 rows of symbols. The middle row is the payline

5 reel slots- Rather than the one payline in the 3 reel slots, the 5 reel slots can have up to 100 paylines. This increases the number of winning combinations, and players have a better chance of hitting a win.

3D slots- These are the most recent forms of slots, and they come with 3D animated graphics and animated characters. 3D online video slot games feature well thought through storylines, impeccable audio effects, and contemporary themes.

i-slots- i-slots are the newest entry in the slots market and are already becoming a favorite of video game players. These slots offer interactive gameplay where players have the liberty to create their own storyline. Only a few casinos such as Guts Casino offer these games, but we can expect this to change over time.

Branded slots- These slots have been gaining popularity over the past few years mostly because they follow a narrative based on either a popular movie or TV show. Some of the branded slots include Guns’ N Roses, Game of Throne, and Britain’s Got Talent.

Progressive jackpots- These slots feature a jackpot that steadily increases every time someone plays until one lucky player lands the jackpot. Once the jackpot has been won, it resets and starts again. Some progressive jackpot slots have payouts worth millions.

 

Special symbols in video slots

Online video slots come with bonus symbols and features that are aimed at boosting your chances of winning. Different video slots online come with varying special symbols, but the most common and rewarding bonus symbols include:

Wild Symbol- When this symbol appears on the reels, it replaces all other symbols except the scatter symbol. This helps you complete a winning combination on a payline. Some slots feature a Wild multiplier that helps complete a combination and multiplies the wins obtained.

Scatter Symbol- The scatter is another rewarding symbol that can activate the free spin or the bonus game feature. The more the number of scatter symbols you land on the reels, the more extra spins you will be awarded.

Multipliers- This symbol increases your winnings by its numerical value, such as x2, x5, or x15.

 

Online Video Slots Bonuses and Free Spins

Online casinos use lucrative welcome bonuses to attract new players and reward ongoing promotions to keep existing players motivated. Most welcome bonuses match your first deposit and award free spins, which could either be attached to a specific slot or not.

For example;

100% welcome bonus up to £100 plus 50 free spins on Starburst
This means that when you make your first deposit and claim this offer, you will be awarded 50 free spins. However, these free spins can only be used on the Starburst slot.

However, free spins are not always ‘free’ since they come with wagering requirements that must be met before you qualify to withdraw any winnings obtained. Typically, any winnings obtained from the free spins are credited to your account as bonus funds, and these bonus funds will then be subjected to playthrough requirements before you can make a withdrawal.

The wagering requirements could range from x10 to x30, while some could go up to x50. Thus, before claiming slots bonuses, be sure to read the attached T&Cs and make sure that the wagering requirement is attainable based on your budget limit. Ideally, you want the largest matched deposit bonus with as many free spins as possible and the lowest rollover requirements.

Apart from the matched deposit bonuses, some casinos offer free online slots no deposit bonus. This sign-up offer does not require you to fund your account and is credited to your account immediately after signing up. This is an offer worth claiming since you can earn free money without risking your own.

 

Slots Payment Methods

The best real money slot sites offer a wide range of payment options for both deposits and withdrawals. The most popular payment options for UK players are credit and debit cards. This is one of the safest payment options. Players using these options are not restricted from claiming the welcome bonus, as is the case with e-wallet payment options such as Skrill, Neteller, and Paypal.

Slot payment methods are divided into several categories:

Credit/Debit Cards- These include Visa, MasterCard, and Maestro. You can use these for both deposits and withdrawals, and while deposits will be processed immediately, withdrawals can take up to 5 working hours.

E-wallets- These are popular options for players who are not comfortable sharing their actual bank/card details. More so, e-wallet payments are processed instantly, and the transaction fees are considerably low. These E-wallet options include PayPal, Skrill, Neteller, and EntroPay.

Cryptocurrencies- Cryptocoin such as Bitcoin and Litecoin have gained popularity among UK players for their anonymous transactions. With these payment options, you are guaranteed safe and untraceable transactions. However, these currencies are highly volatile, which could affect the exchange rate.

Bank Transfer- wire money transfer is recommendable for large payments to and from a casino. This is the safest payment option when dealing with huge amounts, but it also takes the longest to process.

Other recommendable payment options for UK players include;

 

Playing Online Video Slots for Free Vs Real Money

The best UK slots casinos offer players the option to play for free and real money. The free to play options are great for beginners looking to learn about the slots and those players looking to pass time on the reels without risking their money.

Free online video slots offer the same gaming experience as when playing for real money, with the only difference is that you cannot withdraw any winning obtained. Also, not all online slots have a demo version, which limits the number of games you can play for free.

Although free video slot games are fun to play, nothing beats the thrill of playing for real money. You not only get a chance to win big cash prizes, but you also have more game varieties. Playing for real money is also a great option to explore additional slot offers such as real money bonuses.

Unlike the demo games which you can play without necessarily signing up, you will need to create an account and make your initial deposit if you are looking to play real money slots. However, we would emphasize that you choose a trusted and legal online casino when playing for real money to avoid getting scammed by unscrupulous gambling sites.

 

Tips on How to Win Playing Online Video Slots

Online video slots are games of chances, and as such, there is no way one can predict/alter the outcome since the results are generated by a random number generator (RNG). However, we have outlined several online video slots strategies to help you choose the best slots with higher winning possibilities.

Choose slots with the highest payout percentage

Most players ignore the importance of a slot’s RTP. Although the payout percentage of a slot is theoretical, it still plays a crucial role in determining how much your investment will return over time. Recommendable slots will have an RTP above 90%, while some of the best slot payouts can go over 95%. As earlier mentioned, with RTP, it is important to consider other factors such as the slot’s volatility. A high variance slot will have huge but less frequent wins, while a low variance slot will offer small but frequent wins.

Play slots with the highest jackpots

If you are determined to win significant amounts playing online slots, then you should give progressive jackpot slots a shot. Although most of these slots will require you to wager on the maximum bet limit, they offer a chance to win huge amounts. However, if you are a beginner or working with a limited budget, this should by no means make you feel pressured.

Implement the strategy of progressive betting

To emphasize the point of not feeling pressured to jump for the big wins, we would highly recommend you start with a popular system known as progressive betting. With this online video slots strategy, you start off with the lowest bet and increase it every 50 spins. If, during these 50 spins, you don’t end up landing free games or significant wins, then it is time to raise the bet per payline. Hence, if you are lucky to land a higher win, it is more likely to be more than enough to compensate for your loss.

 

Online Video Slots Top Software Providers

With the robust and ever-evolving gambling industry, many software developers are upcoming, and others have been ruling the industry for years. In this review, we will cover the most popular slot providers whose titles have stood the test of time in terms of quality and payout.

NetEnt

This is a Swedish based company that was established in 1994. At NetEnt casinos, you can play slots games such as Gonzo’s Quest, Starburst, and Mega Fortune.

Microgaming

This is one of the largest software providers in the world, with over 600 slot titles. The Isle of Man-based developer was also established in 1994, and some of its popular slot titles include Mega Moolah, Thunderstruck II, and Game of Thrones.

IGT

International Game Technology was established in 1975. They are among the pioneers of branded video slots, and some of the most played IGT slots include Cleopatra, Family Guy, and Pharaoh’s Fortune.

Play’n GO

This is another Swedish company founded in 2005 and has managed to keep up with pioneers through some of its hits, including Book of Dead, Mystery Joker, and Gemix.

Playtech

Founded in 1999, Playtech was one of the original online casino game developers and has over the years provided a plethora of outstanding slots, including The Dark Knight, Justice League, and Age of the Gods

 

Best Video Slots FAQs

❓ Which are the best online video slots of all time? 

The most played and recommendable online video slots include Mega Moolah, Cleopatra, Starburst, Gladiator, Hall of Gods, and Deal or No Deal.

❓Which are the best online casino slots? 

The term ‘best’ is very subjective and could vary based on various factors, including taste and preference. However, we have discussed some of the best slots in several categories, such as highest payouts slots, jackpot slots, and mobile slots.

❓ How to choose a winning slot machine? 

It is impossible to choose a winning slot since the results are determined by an RNG. However, you can improve your odds of winning by implementing the playing tips and online video slots strategy that we have discussed.

❓Is it possible to make money playing online slots? 

Absolutely! Real money slots give you a chance to win real cash while having fun as long as you are playing at verified and licensed UK casinos. If the casino is licensed by UKGC, then video slots online are guaranteed to offer a certain amount of winnings.

❓ Are online slots rigged? 

Online slots by renowned software providers such as Microgaming, NetEnt, and IGT cannot be rigged. These providers ensure that their software undergo regular and thorough audits by independent agencies to ensure that the games are safe and fair.

❓ Can online casinos change slots’ theoretical RTP? 

No, all games come with an already set-theoretical RTP, and online casinos cannot change it.

❓How can I get a free sign-up bonus on online slot sites? 

Some online slot sites in the UK offer a sign-up bonus immediately after creating an account without any obligation to make a deposit. Thus, to get a free sign up offer, check our list of casinos offering no-deposit bonus and some of the latest UK bonuses.

Peris Wambu

Peris Wambu

Peris is an enthusiastic content creator and she mostly specializes in the gambling niche. With more than 5 years of experience, she understands the dynamics of the industry and the evolution of players’ wants.

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