Which online slots payout the most?

By Rainbet
Published Feb 15, 2024

This article shows the 10 highest payout online slots. The article also explains what is a slot payout percentage, the meaning of RTP and house edge, and the difference between progressive jackpots slots and high RTP slots.

List of highest payout online slots

Here is a table showing the 10 highest payout online slots using Gabriele's research.

The process that Gabriele from RainBet made to score these slots involved researching each slot individually, looking at its payout rate (or RTP) from multiple sources.

SlotPayout rate / RTP
Mega Joker99%
Blood Suckers98%
Rainbow Riches98%
White Rabbit Megaways97.75%
King's Honour97.75%
Golden Tour97.71%
Medusa Megaways97.63%
Secret of Atlantis97.07%
Steam Tower97.04%

1. Mega Joker (99% payout rate)

Mega Joker, crafted by NetEnt (one of the most famous software provider), has the higher payout rate of this list, with his impressive 99% Return to Player (RTP). Mega Joker is a top contender for those looking for the best payout slot game.

This classic fruit machine-themed video slot combines traditional gameplay with features like the Supermeter Mode and a significant Progressive Jackpot, appealing to both nostalgic players and those chasing a big win.


  1. High RTP: At 99%, it offers one of the highest returns to player rates.
  2. Supermeter Mode: Improves gameplay, adding an extra layer of excitement.
  3. Progressive Jackpot: Provides the chance for massive wins, drawing casino players in.
  4. Nostalgic Charm: The game’s design brings back memories of classic slot machines.


  1. No Free Spins: Lacks the commonly sought-after free spins feature.
  2. Complexity: The Supermeter feature may be complex for newcomers to slot machines.

What users typically say about Mega Joker slot: Mega Joker is popular for its Supermeter Mode, Progressive Jackpot, and high volatility, offering players the chance for significant wins.

2. Blood Suckers (98% payout rate)

Blood Suckers, developed by NetEnt, is a game that captivates players with its vampire theme and boasts a generous 98% RTP.

This online slot game, set against a backdrop of Victorian horror, draws players into a world of the supernatural with its detailed illustrations and engaging gameplay.


  1. High RTP: Sports an RTP of 98%, positioning it among the highest paying online slot games.
  2. Frequent Wins: Low volatility ensures more regular wins, albeit smaller in size.
  3. Immersive Graphics: Captures the vampire lore with rich, detailed Victorian-era illustrations.
  4. Bonus Features: Offers a variety of bonus features including Wild Symbol, Scatter Symbol, Free Spins, and Bonus Games.


  1. No Massive Wins: While payouts are frequent, the game rarely offers very large jackpots.
  2. Complexity: The multitude of features may overwhelm newer players.
  3. Age: Despite its charm, the game's graphics and animations betray its age, especially compared to newer titles.

What users typically say about Blood Suckers slot: Blood Suckers captivates gothic and horror enthusiasts with its high payouts and homage to horror cinema through stunning visuals.

3. Rainbow Riches (98% payout rate)

Rainbow Riches, produced by Barcrest, captivates gamblers with its enchanting Irish theme, showcasing leprechauns and pots of gold, making it a favorite among online slot games.

With an RTP rate of 98%, Rainbow Riches stands as one of the best slots for those seeking generous payouts.

Rainbow Riches attracts both novices and experienced players with its easy gameplay, thrilling bonus rounds, and large jackpot potential.


  1. Fun Theme: Immerses players in an Irish adventure with leprechauns and treasure.
  2. Exciting Bonus Rounds: Offers special bonus games for extra excitement.
  3. High Jackpot: Potential to win a jackpot of £250,000.
  4. Mobile Compatibility: Plays smoothly on mobile devices, enhancing accessibility.


  1. Requires a Healthy Bankroll: May need a considerable amount to start.
  2. Specific Theme: The Irish theme may not appeal to all players.
  3. No Free Spins: Lacks the popular free spins feature found in many slots.

What users typically say about Rainbow Riches slot: Rainbow Riches is celebrated for its Irish theme, ease of use, exciting bonus games, and potential £250,000 win.

4. Starmania (97.87% payout rate)

Starmania, developed by NextGen Gaming, invites players to explore the vastness of the universe with its celestial theme.

Starmania has an RTP of 97.87%, promising a high return to players.

Starmania’s unique features, including the ability to pay both ways and stacked wilds, improve the gaming experience, making it a popular choice among high RTP slots enthusiasts.


  1. High RTP: Boasts an RTP of 97.87%, making it one of the higher RTP slots available.
  2. Pays Both Ways: Increases winning chances by paying out from left to right and right to left.
  3. Stacked Wilds: Wild symbols stack on the middle reels, offering more opportunities for wins.
  4. Bonus Feature: Comes with a lucrative bonus feature to boost winnings.


  1. Dated Graphics: The visuals may not appeal to those seeking modern graphics.
  2. Similarity to Other Games: Shares features with other slots, like Starburst, which might detract from its uniqueness.
  3. Max Win: Capped at 500 times the stake, limiting the maximum payout.
  4. No Progressive Jackpot: Lacks the appeal of potentially massive progressive jackpot wins.

What users typically say about Starmania slot: Players often praise Starmania for its relaxing space theme and the potential for significant wins, thanks to its high RTP and rewarding bonus features.

5. White Rabbit Megaways (97.75% payout rate)

White Rabbit Megaways, by Big Time Gaming, invites players on an enchanting journey with its unique celestial theme, offering a distinctive gaming experience.

Renowned for its high RTP of 97.75%, White Rabbit Megaways is celebrated for providing numerous real money winning ways, up to 248,832, thanks to the innovative Megaways mechanic.


  1. High RTP: Features an impressive RTP of 97.75%.
  2. Many Ways to Win: Offers up to 248,832 ways to win, enhancing player engagement.
  3. Bonus Features: Includes two wild symbols and free spins with expanding reels for increased win potential.
  4. Unique Theme: The game's celestial theme offers a fresh and enjoyable experience.


  1. High Risk: Comes with high volatility, requiring players to manage their bankrolls carefully.
  2. Low Maximum Bet Limit: Caps bets at £20, limiting high rollers.
  3. Complexity: The game's variety of features may be daunting for new players.
  4. Not a Progressive Jackpot slot: Lacks the draw of a progressive jackpot for those chasing massive wins.

What users typically say about White Rabbit Megaways slot: Game enthusiasts praise its captivating theme, potential for big wins via bonuses, and visually appealing, exciting gameplay.

6. King's Honour (97.75% payout rate)

King's Honour, offered by Barcrest, is a slot game that takes players on a medieval adventure with its innovative dual-reel system: a standard 4x5 set paired with an expansive 12x5 set.

King's Honour boasts a high RTP of 97.75%, ensuring it ranks among the most generous online slots.

King's Honour’s distinctive feature is the quantity of bonus opportunities it provides, from knight symbols that substitute for others to free spins, locked wilds, respins, and multipliers that dramatically increase the potential for big wins.


  1. Bonus Features: Offers an extensive range of bonus features, enhancing gameplay.
  2. Big Bet Game: Includes a Big Bet option, allowing for enhanced spins with additional perks.
  3. Huge Win Potential: The combination of multipliers and the game's layout can lead to wins up to 2,000 times the stake.
  4. Colossal Reels: Utilizes the popular Colossal Reels format, adding a unique twist to the game.


  1. Gameplay Speed: Lacks the ability to speed up the reel spins, which may test some players' patience.
  2. Accessibility: Does not support spacebar shortcuts for spins, limiting gameplay fluidity.
  3. Visual Appeal: The dual reels dominate the screen, which might not appeal to all due to its functional design.
  4. Card Suits Dominate: The prevalent card suits may slightly detract from the medieval theme.

What users typically say about King's Honour slot: Gamers are attracted to the slot's large reels and numerous bonus features, enhancing gameplay excitement and depth.

7. Golden Tour (97.71% payout rate)

Golden Tour by Playtech offers a serene golf-themed experience, appealing to fans of the sport and online gambling enthusiasts alike.

With an RTP of 97.71%, Golden Tour ranks highly among slots with generous payouts. The game is celebrated for its straightforward gameplay and engaging bonus feature, where selecting the right club leads to cash rewards.


  1. High RTP: Features an RTP of 97.71%, making it a top choice for players looking for high returns.
  2. Simple Gameplay: Easy to understand, perfect for newcomers to slot gaming.
  3. Bonus Feature: Offers a unique bonus game, enhancing the golfing experience and winning potential.
  4. Mobile Compatibility: Fully optimized for mobile devices, allowing play on the go.


  1. Basic Graphics: The visuals are straightforward, lacking the complexity some players prefer.
  2. Limited Bonus and Jackpot: Fewer opportunities for large jackpots and bonus rounds.
  3. Low to Medium Volatility: Frequent payouts are typically smaller, aligning with its volatility.
  4. Limited Paylines: With only 5 paylines, the game has fewer winning combinations.

What users typically say about Golden Tour slot: Golden Tour is praised for its simple, engaging golf theme and interactive "click me" feature, offering fun and rewards.

8. Medusa Megaways (97.63% payout rate)

Medusa Megaways, developed by NextGen Gaming, immerses players in a mythical Greek theme rather than a celestial one, offering a unique twist on the legendary figure of Medusa.

With an RTP ranging from 96.28% to 97.63%, Medusa Megaways stands out for its high potential returns and the dynamic Megaways mechanic, which provides up to 117,649 ways to win.


  1. High RTP: Offers a variable RTP up to 97.63%, making it highly appealing for those seeking games with high payout potential.
  2. Many Ways to Win: With up to 117,649 Megaways, players have numerous opportunities for wins.
  3. Bonus Features: Features cascading reels, free spins, and extra reel modifiers for enhanced gameplay.
  4. Unique Theme: The Greek mythology theme offers an immersive playing experience.


  1. High Risk: This slot is known for its high volatility, requiring careful bankroll management.
  2. Low Maximum Bet Limit: The game caps maximum bets at £20, which may not satisfy high rollers.
  3. Complexity: The multitude of features and Megaways system might overwhelm new players.
  4. No Progressive Jackpot: Absence of a progressive jackpot may deter those chasing life-changing wins.

What users typically say about Medusa Megaways slot: Medusa Megaways attracts players with its Greek mythology theme, high RTP, and the Megaways system, offering significant winnings through free spins and cascading reels.

9. Secret of Atlantis (97.07% payout rate)

Secret of Atlantis by NetEnt dives deep into the mythical underwater city, offering players an exploration of Atlantis with a generous RTP of 97.07%.

Secret of Atlantis captivates with its visually stunning underwater scenery and engaging gameplay mechanics.

Secret of Atlantis offers high rewards and numerous features to increase winning odds.


  1. High RTP: Offers an RTP of 97.07%, appealing to those seeking games with higher payout percentages.
  2. Many Ways to Win: Provides 40 bet lines, increasing winning opportunities.
  3. Bonus Features: Enriched with Wilds, Re-Spins, and Nudge Wilds, adding depth to gameplay.
  4. Unique Theme: The enchanting underwater theme offers a captivating gaming experience.


  1. High Risk: The game's volatility might require cautious bankroll management.
  2. Low Maximum Bet Limit: Maximum bets are capped, which might not appeal to high rollers.
  3. Complexity: The variety of features may be overwhelming for new players.
  4. No Progressive Jackpot: Lacks the progressive jackpot that attracts many slot enthusiasts.

What users typically say about Secret of Atlantis slot: Players appreciate the immersive underwater adventure, high RTP, and the slot's ability to deliver significant payouts through its innovative bonus features.

10. Steam Tower (97.04% payout rate)

Steam Tower by NetEnt merges a captivating steampunk theme with Victorian adventure, offering players a journey to rescue a damsel and defeat a dragon atop a tower.

Steam Tower has an RTP of 97.04% and medium volatility, balancing the frequency and size of wins in a way that appeals to a wide range of players.


  1. High RTP: Positioned at 97.04%, it promises a higher chance of returns.
  2. Medium Volatility: Offers a balanced experience with regular wins.
  3. Bonus Features: Includes Wilds and Free Spins, enhancing the chances of climbing the tower.
  4. Unique Theme: The steampunk backdrop provides a distinctive and immersive gaming environment.


  1. Complexity: Some players may find the array of features challenging to grasp.
  2. Limited Bonus and Jackpot: Fewer opportunities for large jackpots and expansive bonus rounds.
  3. Gameplay Speed: Lacks quick-spin options, requiring patience as the story unfolds.
  4. Accessibility: Does not support keyboard shortcuts for gameplay, limiting some players' preferences.

What users typically say about Steam Tower slot: Gamers laud the game for its compelling story, balanced mechanics, and distinct steampunk style, with the rescue mission adding excitement.

Progressive jackpots vs high rtp online slots

In online casinos, there are two types of slots: progressive jackpot slots and high RTP slots.

Progressive jackpots are dynamic, with the potential payout increasing each time the game is played but not won. Casino jackpots, known for their substantial payouts, draw players with the promise of significant wins, frequently boosted by initial bonuses.

High RTP slots, on the other hand, offer a different appeal. The RTP percentage represents the expected payout over time, with higher RTPs suggesting a better return on wagers in the long run.

Best online casinos feature high RTP slots, attracting players with their regular wins. Though payouts aren’t as large as progressive jackpots, these slots are preferred by strategic players for their consistency.

Online casinos offer a variety of games, both in-person and online, featuring a mix of progressive jackpot and high RTP slots to appeal to different tastes.

Online casinos cater to all players, offering both high rewards and consistent returns.

What is a slot payout percentage?

A slot payout percentage, also known as Return to Player (RTP), is the average amount of money a slot game returns to players as winnings, expressed as a percentage of total bets.

When you talk about slot payout percentage, you should consider the house edge too. The house edge is essentially the inverse of the RTP, representing the percentage of total bets that the house expects to keep over time.

What is the average RTP of online slots?

The average RTP of online slots typically ranges from 95% to 96%.

What is the highest RTP of online slots?

The highest RTP of online slots is 99%, with Mega Joker by NetEnt offering this rate.

What is the difference between RTP and volatility?

RTP measures the percentage of stakes a game returns to players over time, while volatility indicates the risk and how often and how much a slot pays out.