Home / Games / Slots-rtp

Best Paying Online Slots 2021

When playing online slots (or any other high payout casino game), we all want to win big money, of course. In order to win more and get the most entertainment from the game, it is essential to choose the highest paying slots and the best payout online casino. I know how to see this, and I will share my knowledge with you.

Mobile friendly



Sort by:


Sort by:

Release date
Max Bet
Min Bet
Nemo's Voyage (Mobile)
Play for real money

at Casumo Casino


Nemo's Voyage (Mobile)

WMS (Williams Interactive)

Best Payout Chances — How to Value 

When you are looking for the best payout online slots in UK casinos, you are usually offered ones with the highest RTP. I’ll also tell you about RTP, but I’m convinced that it’s not the only end even not the main thing that affects your winnings. The variance of online slots payout is a revealing mark as well. And I believe that random chances of winning and fair payouts are the most crucial.

What should you know about slots RTP?

Return to Player (RTP or RTP percentage) is a theoretical metric that describes the expected online slots payout. It means that if the RTP of a slot game is 98.1%, for example, you can expect to be paid £ 98.1for every £ 100 you wager (in the long term). The house edge here is 100% - 98.1% = 1.9%. A house edge or a casino advantage is the part of your bet which a casino expects to keep to itself to cover its expenses and make a profit.

Simply put, playing online slots with a higher RTP will give you a better chance of payout in the long run compared to playing with a lower RTP.

Here is the list of еру best payout online slots with the highest RTP you can play on my website:
Ugga Bugga (Playtech) - 99.1% RTP


Mega Joker (NetEnt) - 99.0% RTP


Sure, there are dozens else online slots with high RTP here on Davedealer.com. Just sort the slots by Max RTP to find the ones with the best payouts.

Each game's RTP percentage must be indicated by the provider and operators. In the other case, we can suspect that the game is pirated.

Still, you have to understand clearly the concept of "long term (or run)". It’s the expected result for a huge number of spins, which can reach dozens of millions. Fewer spins might not always equal the desired result. It means that slots with higher slot RTP don’t guarantee you a better payout than ones with lower RTP.

However, gambling is beautiful due to the lots of surprises that can happen during the game. You may hit the jackpot on an online slot with low RTP or win nothing playing on a slot machine with the highest payout percentage.

Anyway, lots of players believe in the best RTP as the most essential factor which affects their wins. Therefore, I will talk about all the nuances of these games, taking into account the RTP.

High or low variance — which online slot pays out best?

I always advise all players to decide what exactly they want before they choose the best payout casino game. Do you wish to win a huge amount of money? Or do you want to play just for fun and add some excitement to the game with quite frequent nice prizes? Or you would like to win big but don't want to risk too much?

The characteristics of the online slots as variance will help you choose a game that suits you or your current mood best.

Variance (also called variability, volatility, or dispersion) is a metric that describes how often a player gets a payout combination and how big the wins are. To put it simply, games with low variance will pay out smaller wins more often, while online slot games with high volatility will pay out higher wins, but less often.

Choose best RTP  high, low, or medium variance slots.

High variance slots

High variance slots are good for players who want to win big money. Winning combinations fall rarely, but they are significant.

These are the best high variance slots you can play online here:

  • Book of Dead ( Play’n GO). The max payout is 50,000x your bet. RTP 96.21%
  • Game of Thrones ( Microgaming). The max payout is 20,166x your bet. RTP 96.4%
  • Break da Bank Again ( Microgaming). The max win is 375,000 coins. RTP 95.43%
  • Immortal Romance (Microgaming). The max payout is 12,000x your bet. RTP 96.86%
  • Bonanza ( Big Time Gaming). The max win is 120,000 coins RTP 96.00%

Keep in mind: to get max payouts in online slots you have to make max bets.

Low variance slots

Low variance slots suit those players who appreciate entertainment more than the pursuit of a massive win. Low volatility games pay out pretty little, but due to numerous bonus features, you can get different small prizes more often.

HerImmortal Romance (Microgaming)e are some of the most popular low variance slot games you should try:

  • Starburst (NetEnt) RTP 96.09%
  • Ugga Bugga (Playtech) RTP 99.1%
  • Blood Suckers (NetEnt) RTP 98%
  • Tomb Raider (Microgaming) RTP 95.22%
  • Pink Panther (Playtech) RTP 93.99%

You don't need much money to play — min stakes are usually £0.01–0.05 per payline.

Medium variance slots

Medium variance slots may reward you with plenty of low and mid prizes throughout the game. Сhoosing this kind of online slots is an excellent compromise between the wish to win a lot and the unwillingness to take high risks.

You can play these (and dozens of other) beautiful medium variability games on my website:

  • Jurassic Park (Microgaming) RTP 96.67%
  • Thunderstruck II (Microgaming) RTP 96.65%
  • Holmes and the Stolen Stones (Yggdrasil) RTP 96.8%
  • Gonzo's Quest (NetEnt) RTP 96.0%
  • Lord of the Ocean (GreenTube, Novomatic) RTP 95.1%

With reasonable stakes, you may win up to 1000x your bet.

The more detailed classification includes low-med and med-high volatility.

As in the case of RTP, it is essential to understand that due to randomness in the game, the result can be very different from the theoretical indicator.

Best Payout New Slots

There are dozens of new slot games on my website: All of them have quite high but not amazing RTP. Over time, developers (or sometimes operators) can increase this index, but it doesn’t happen always.

Here are  some of the latest releases by the world-leading providers: 

  • Oni Hunter (Microgaming)  10.07.2021   RTP 96.87%
  • 5 Lions Megaways  (Pragmatic Play)  24.06.2021   RTP 96.5%
  • Starburst XXXtreme (NetEnt)   15.07.2021    RTP 96.26%
  • Epic Ape 2 (Playtech) (Jackpot)   29.07.2021    RTP 95.97%
  • Gordon Ramsay Hells Kitchen( NetEnt)  25.03.2021    RTP 96.07%
  • Power of Thor Megaways (Pragmatic Play)  01.04.2021   RTP 95.81%

Best Payout Jackpot Slot Machines in 2021

There are two types of jackpot slots — Fixed Jackpots  and Progressive Jackpots

A fixed (non-progressive) jackpot is a jackpot that doesn’t rise. This prize can be represented as

  • a determined amount of money
  • a set multiplier of a player’s bet

Progressive jackpot, in its part, can be

  • Standalone (or “in-game”) progressive slot machine. А percentage of the stakes on one particular machine is contributed to the jackpot. They are mostly found at brick-and-mortar casinos.
  • Local progressive jackpot. It is made up of some slots (sometimes of different titles)  across the same casino. 
  • Networked (or “wide area network”) progressive jackpot. These are progressive slots linked within multiple casinos with one progressive jackpot. Such network jackpots are managed by the game provider whose games are used by lots of casinos.
  • Must Drop ( Must Fall, Must Go) jackpot. Any player has a chance to win it daily before it gathers a certain amount or at a certain time.

Networked progressive jackpots are the biggest and the absolute record holder among them is Microgaming’s Mega Moolah.  In 2018, it paid out an amazing €18,915,872.81 jackpot,  the greatest one in online gambling history. 

As usual, progressive slots have lower RTP but still stay extremely popular. Here on my website, you have a chance to hit a life-changing jackpot playing the best progressive slots:

  • Mega Moolah (Microgaming)  RTP 88.12%
  • Immortal Romance Mega Moolah (Microgaming) RTP 93.4%
  • Age of the Gods (Playtech) RTP 95.02%
  • Divine Fortune (NetEnt) RTP 96.59%
  • Mega Fortune (NetEnt) RTP 96%
  • Fishin Frenzy Jackpot King (Blueprint) RTP 93.32%

What else affects real money slots winnings?

As already mentioned, all formal metrics are theoretical and based on thousands to millions of spins. In real life, His Majesty chance runs all the games. More scientifically speaking, the result of the casino game is subject to probability theory as all the online slot games are controlled by random number generators, also known as RNG. In other words, the odds of winning are always the same, which makes casino games fair. Therefore, flawless, certified by an independent company such as eCOGRA or iTech Labs, operation of the slot is a must.

Such agencies make sure that online casinos do not violate the stated conditions of gambling and that players receive payments and bonuses in time. Also, to combat fraud, the regulators make certain that casinos do not deceive their customers by making adjustments to the software. They also check that the random number generator is working correctly and that it does randomly determine the winning combinations.

The size of your bet and the number of paylines you play on affect your winnings (and losses) as well. I never bet min and always use all paylines a slot has.

As for me, luck and the sixth sense are as essential as all those real factors described above. You may not believe me, but my gut feeling almost always helps me make the right decision during the game and stop playing on time.

The best payout casinos:
Mr Green - The most reliable high-payout casino

Launched in 2008, licensed by MGA, earned an excellent reputation

Fortune Clock  - The best mobile  casino

Easy navigation and smooth gaming on all mobile devices

Rolletto The best choice of banking methods

Fast and safe payments. Bitcoin supported

Casumo - The best  welcome bonus

100% Deposit Match Bonus up to £300 + 20 Free Spins, min deposit £10, WR 30x

Casino Intense  - The best customer support 

If you know exactly which game you want to play and it is offered by other casinos you can estimate all essential features of those casinos yourself following my guide.

How to Choose a Paying Casino with the Best Winning Odds

How to Choose a Paying Casino with the Best Winning Odds

Any slot game is offered by dozens of casinos. Thus, it’s not enough to find the best payout slots with the best odds of winning, is vital to choose the fastest withdrawal online casino.

Using my evaluating method, I selected some top payout casinos where you can find hundreds of best paying online slots from world-leading developers.

1. Check a casino’s reliability and honesty

Check a casino’s reliability and honesty

Reliability and honesty are the main points I pay attention to when testing and rating casinos.

A trustworthy UK casino has a valid licence from a reputable regulator.

The longer the casino operates without significant complaints from the players, the higher its reputation. The casino owners and linked brands mustn’t be involved in any scandals or accused of payout cheating.

Players personal and financial information is protected by 128-bit SSL encryption.

Mr Green casino is known in the gambling world as “a True Casino Gentlemen” Launched in 2008, licensed by MGA, it has earned players’ trust and won numerous industry awards. Playing there you are sure in your personal and financial info safeness.

Launched 2008
  • 2.8
  • 3.1
  • 4.5
  • 3
100% Bonus up to £50 + 50 Free Spins on Starburst
100% Bonus up to £50 + 50 Free Spins on Starburst

Bonus fornew customers,


Min Dep £20

  • Launched 2008
  • Withdrawal Methods Bank Transfer, Paysafe
  • Software NetEnt, Microgaming, Pragmatic Play, Play'n GO, Quickspin
  • Licenсes UKGC, MGA, Sweden, Italy

2. Evaluate a mobile version quality

Evaluate a mobile version quality

Nowadays, more than half of all players prefer to play casino games on their mobile devices. Thus I impose quite tough requirements on mobile casinos. 

All the games offered at the casino (or at least most of them) must be available on smartphones and tablets, regardless of the operating system. A swift and responsive website and ease of navigation are necessary. The overall mobile experience has to be the same as on PC or better.

Fortune Clock is a mobile-friendly casino. You can use a convenient mobile version of the website, but also you can download a dedicated mobile app and even get a no-deposit bonus for this.

Launched 30.Nov.2019
  • 4.8
  • 4.7
  • 4.8
  • 4.9
100% bonus and 100 free spins for you!
100% bonus and 100 free spins for you!

Bonus fornew customers,


Min Dep €20

  • Launched 30.Nov.2019
  • Withdrawal Methods ecoPayz, Jeton, MasterCard, Payeer, Perfect Money, QIWI, VISA, Webmoney, Yandex Money
  • Software NetEnt, Microgaming, Evolution, Pragmatic Play, Betsoft
  • Licenсes Curaçao

3. Make sure deposit and withdrawal options are diverse

Make sure deposit and withdrawal options are diverse

It’s evident that the wider choice of payment methods a casino offers, the more customers it will attract. Still, while evaluating casino banking options, I consider some more aspects:

  • players' data must be protected; responsible casinos use 128-bit encryption.
  • KYC procedure must be clear and performed only once.

Rolletto casino offers traditional Visa and MasterCard, innovative methods such as Klarna, and besides, the casino supports Bitcoin and several other kinds of cryptocurrencies. As usual, you have fewer ways to withdraw funds, but the choice is pretty good. Funds withdrawal is hassle-free and as fast as it is promised (depending on the payment method).

Launched 06.Sep.2020
  • 4.5
  • 4.3
  • 4.7
  • 5
Welcome package up to €6000 for your first 3 deposits
Welcome package up to €6000 for your first 3 deposits

Bonus fornew customers,


Min Dep €10

  • Launched 06.Sep.2020
  • Withdrawal Methods Bitcoin, Bitcoin Cash, Dash, ethereum, Litecoin, Monero, Neteller, Paysafe, Ripple, SEPA, Skrill, SWIFT, Tether
  • Software NetEnt, Microgaming, Evolution, Pragmatic Play, Play'n GO
  • Licenсes Curaçao

4. Find out if the welcome bonus conditions are acceptable

Find out if the welcome bonus conditions are acceptable

Each casino’s welcome offer looks incredibly attractive. But don’t rush claiming it immediately. Use my general rules of bonus appraisal: read T&C to make sure that wagering requirements, the validity time, game and payment restrictions, bet and withdrawal limits, etc are reasonable.

The good news for slot lovers is that they can choose the best payout slot machines to play for bonus money. 

Casumo offers a 100% bonus up to £300 + 20 Free Spins, with WR 30x and a min deposit of £10.

Launched 31.Dec.2011
  • 4.2
  • 3.9
  • 5
  • 4.3
100% bonus up to £300
100% bonus up to £300

Bonus fornew customers,


Min Dep £10

  • Launched 31.Dec.2011
  • Withdrawal Methods Bank Wire Transfer, ecoPayz, MuchBetter, Neteller, Skrill, Sofort Banking, VISA
  • Software NetEnt, Microgaming, Evolution, NextGen, Pragmatic Play
  • Licenсes UKGC, MGA, Sweden

5. Test how customer support service works

Test how customer support service works

Every player can come across a problem; it might happen even to an experienced gambler. 

So the high quality of customer service is an essential sign of a superb casino.

The help desk should be available in several ways, and at least one of them (it is desirable that it be live chat)  must work around the clock. The agents’ responses have to be fast and helpful.

At Casino Intense, you can a support service via live chat, email, and phone. The support agents are knowledgeable, friendly, and their answers are very quick and useful.

Launched 04.Jun.2020
  • 2
  • 4
  • 4
  • 4
888 Euro Welcome Bonus
888 Euro Welcome Bonus

Bonus fornew customers,


Min Dep £20

  • Launched 04.Jun.2020
  • Withdrawal Methods Bank Wire Transfer, MasterCard, Neteller, VISA
  • Software Pragmatic Play, Betsoft, Play'n GO, iSoftBet, Playson
  • Licenсes Curaçao


The endless variety of high payout slots guarantees you unending fun and excitement. So, use my guide to choose the best paying online slots in the UK, opt for the right casino to play it, and enjoy yourself. And trust your gut feeling, it really works.

Try your luck right now!

Did you find the Highest RTP Slots Guide helpful?

Thanks for the answer!

 Best Paying Online Slots 2021 Davedealer.com

Can you really win real money on online slots?

Yes, you can. For this, you should play on certified high paying slots at the fastest withdrawal online casinos.

Is the chance to win increased on online slots with higher RTP?

Yes, theoretically. However, it is essential to understand that the "long term" means a huge number of spins before the result comes close to expected.

Should you choose high variance slots?

It all depends on your preference. Choose these games if you want to win big. But be ready to win nothing as massive winnings drop rarely.

Will the amount I bet affect the outcome?

Yes, above all. Assumedly, the larger the bet, the higher the chance of a payout. However, you have to bet only the amount that you can afford to lose.

Is gambling on online slots really random?

Yes, it is, but only at secure online casinos which I recommend. At such high paying casinos, the slot games and their RNGs (Random Number Generators) particularly, are tested and certified by independent auditors like eCOGRA, iTechLabs, or GLI.

Are there any strategies to winning a jackpot?

No, there are not such strategies or secrets; jackpots are as random as any other winnings

Are there any Evolution slot games?

Evolution Gaming specializes in live dealer games. But they have recently released Gonzo’s Treasure Hunt, a unique combo of a live show and a slot game. You can find it here on my website, just use “Search”. Besides, as Evolution Gaming has bought NetEnt, the highest payout NetEnt’s slots can be considered Evolution’s now.