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Which Slot Machines pay the best?

High Paying Slots

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Every gambler wants to win big in 2021 but not all slot machines present them with that chance. The best payout slots UK online are the ones with the highest RTP and a few other factors. Most of these slots can be played for real money on Slots UK.

You can find the following on this page

  • Factors we consider when choosing the best payout slots
  • Top 10 best payout slot machines in 2021
  • About Return to Player Percentage
  • High maximum wins and Jackpot slots
  • Top sites to Play the best payout slots
  • Best Payout slots FAQs 

Cool Bonuses for Slots UK PayPal players

Top 10 List

Slot Title Provider RTP Theme
Ugga Buggga Playtech 99.07% Jungle, Ancient Africa
Mega Joker Net Ent 99% Fruity, Joker
Jackpot 6000 NetEnt 98.8% Classic
The Catfather Pragmatic Play 98.1% Mobster, cat
Blood Suckers NetEnt 98.00% Vampire
Starmania NextGen 97.87% Celestial, Star, Space
Good Girl, Bad Girl Betsoft 97.8% Fantasy
White Rabbit Megaways Big Time Gaming 97.7% Alice in Wonderland
Gypsy Rose Betsoft 97.6% Gypsy, Fortune-telling
Gold Train Pragmatic Play 97.16% Train, Gold

How we rate the best slots?

Most sites are only interested in the Return to Player Percentage (RTP) when choosing the best payout online slot games. Although the RTP is arguably the most important factor in this case, there are a few others like, variance and jackpot Value, that can determine how often and how big gamblers win. The following explains why they are vital:

  • RTP: The return to player percentage indicates an average of what a player can expect to win from slots. The slots on our list have a minimum of 97% RTP. More details on RTP are available in another section of this post.
  • Volatility: The volatility of a slot game indicates the level of risk involved in playing it. Low variance games pay often but the payouts may be low. High variance games may pay less frequently but have high payouts. The balance between both is medium variance games.
  • Maximum wins and Jackpot value: They refer to the top prize a slot machine can payout. The maximum win indicates the highest possible returns a player can get per spin from a slot game, which often comes from the slots bonus rounds.
  • Slot Provider: While this is not so significant, we can only trust the RTP and max wins from reputable game providers. All the slot titles on our list are from such providers. 

Best 10 Slot Machines with High Return to Player Rate

All slot titles on the following list are worth your time. The list is arranged from the highest to lowest RTP. However, there may be slots with high RTPs that do not make our list. We consider more details beyond RTP. Find detailed info on each slot title below.

Ugga Buggga – 99.07% RTP

Experience the tropical island on a 10x3 slot machine. Ugga Bugga is a low variance slot that gives players to chance to get up to 1000x their stake per spin. There are a few bonus features to entice you and that includes the wild symbol which makes it easier for players to land winning combinations.

Mega Joker – 99% RTP

NetEnt brings you a traditional style slot game that plays on 3 reels. It has medium to high volatility and 5 paylines. The slot game has some amazing bonus features including free spins. The slot machine runs smoothly on both desktop and mobile devices.

Jackpot 6000 – 98.8%

A classic slot launched in 2014, Jackpot 6000 plays on a 3x3 machine and it has 5 paylines. Although its high volatility means payout may not be as frequent as it is on other low slot machines, its 98.8% RTP is an attractive feature. What more? You stand the chance to win up to 6000x your stake at each spin.

The Catfather – 98.1%

What's more interesting than 98.1% RTP? A medium slot game with bonus features like wilds, free spins, multipliers, and the chance to win up to 2,251x your stake. The Catfather, an online slot with 5 reels and 9 paylines, has all the above features.

Blood Suckers – 98.00%

A vampire-themed slot with 5 reels and 25 paylines, Blood Suckers is a video slot with multipliers, free spins, and other features that can increase your chances of winning big. It is a low to medium variance game which means it is likely to payout often. Also, it has a maximum win of 1,014.6x per spin.

About Return to Player Percentage (RTP)

As mentioned earlier, the return to player percentage is one of the most important factors that determine payouts. The RTP indicates how much a slot machine pays back to players from the amount staked. 

Casinos need to make gains to meet operational costs therefore slot machines are designed to earn them some amount. Usually, it's a little amount, less than 10%.

The following calculation explains a slot game with a 95% RTP:

  • Some players play the slot game for some time
  • They spend a total of £100,000
  • They win and lose at random 
  • In total, all payouts equal £95,000
  • The Casino gains £5,000

RTP is calculated based on a minimum of one million spins. That is why you may not be getting exactly the stated RTP when you play. You could play a game of 95% RTP with £100 and win less or more than £95. The reason is that you are not the only one playing that particular game and the RTP is calculated over many spins. Also, the wins and losses are randomly distributed. 

While many slot players may walk away with nothing, some may win little amounts and one may win a jackpot. RTP is not a guarantee of what a particular player would win.

Online slots have an average RTP of 95% - 97%. The slot title with the least RTP on our list above is Gypsy Rose with 97.6%.

High maximum wins and Jackpot slots

Some slot machines may have low RTP but high maximum win or jackpot value. Hitting jackpot on such slots could be really intriguing. We also categorize such slot machines as high payout machines and the following table lists some of them:

Slot Title Provider RTP Max Win/ Jackpot Value
Gladiator Jackpot Playtech 91% £2,000,000 min
Cleopatra IGT 95.02% £2,000,000
Mega Moolah Microgaming 88.12% $1,000,000 min
Gold Fish WMS (Scientific Gaming) 96.00% £1,050,000
Lucky Leprechaun Microgaming 96.33% £500,000

*All values in this table are subject to change at any time.

High Payout Casinos to Play At

The best payout slots are available on most licensed casinos but there are many factors to consider when choosing the casino to play them. Many gamers are impressed by juicy bonus offers, some want to play on a responsive site, others want to have access to a wide variety of slot titles without moving from one casino to the other. We advise gamers to go for casinos that offer not part, but all the factors above.

An example of such a casino is Slots UK. The casino is not only safe for gamers but it has a simple interface that is optimized for both mobile and desktop devices. Also, Slots UK offers up to 500 free spins on selected slots in addition to other bonus offers (Ts & Cs Apply). 

The following highlights why Slots UK is one of the best casinos to play best payout slots:

  • Simple registration process.
  • Amazing welcome offer - up to 500 spins in selected slots (Ts & Cs Apply)
  • Fast processing of deposit and withdrawal.
  • A huge collection of classic and modern slots with above average RTP.
  • User-friendly interface optimized for mobile and desktop devices.

Best Payout Slots FAQs

Can Casinos Change Payout Percentages?

It is not impossible to change the RTP of a slot machine but it usually takes a lengthy and costly process that most casinos would rather avoid. To adjust the RTP of most slot machines, casinos have to reach out to the game developer for that particular purpose. The game developers are often reluctant to do this. Also, independent gambling bodies inspect and regulate this process to protect gamers. 

What Is the Difference Between Volatility and RTP?

While they both influence payouts, volatility and RTP are not the same things. Volatility indicates the variance of the game (low, medium, or high). Highly variance games have more risks as they pay less frequently but more amount. Low variance games pay frequently but with low payouts. The in-between is medium volatility.

Should I Play the Max Bet on Slot Machines?

Playing the max bet increases the RTP of some slot machines but that is not true in all cases. While playing the max bet positions you for a bigger win, it is more important to stake what you can afford to lose, just in case.

Do land-based and online casinos have the same RTP?

Generally, online casinos have higher RTPS than land-based casinos because of operational costs. Land-based casinos may need tens of workers, have to buy gadgets, etc. That raises the operational cost. 


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