Best RTP Slots – Online Slot Games with the Highest Payouts in 2024

The highest RTP slots are the most popular games for players looking for high payouts. In such a competitive environment, numerous software providers offer games with higher-than-average Return to Player percentages. Our team of online casino specialists has ranked the best payout slots with the highest RTPs and identified the top casino sites on which to play them.

The Best Slots with Highest RTP

These are the highest RTP casino slot machines that offer a higher probability of payouts, a safe and fair user experience, and plenty of bonus features.

Slot Software Provider RTP Volatility Where to Play
Book of 99 Relax Gaming 99% High TG.Casino
Magic Garden 10 Smartsoft Gaming 98.9% High WSM Casino
Marching Legions Relax Gaming 98.12% High Mega Dice
Money Cart Bonus Reels Relax Gaming 98% High Lucky Block
Blood Suckers NetEnt 98% Low TG.Casino
Money Cart Bonus Reels Relax Gaming 98% High WSM Casino
Apollo 77 Smartsoft Gaming 98% Medium Mega Dice
Desert Gem Kalamba Games 97.97% High Lucky Block
Polar Paws Quickspin 97.84% Medium TG.Casino
Atlantis Thunder St. Patrick’s Day Kalamba Games 97.73% High WSM Casino

Highest RTP Slots Reviewed

Learn more about the top slot machines with the highest RTP in the following reviews.

1. Book of 99

Feature Description
Provider Relax Gaming
Min/Max Bet $0.10/$20
Paylines 10
Max win 12,075x
RTP 99%

The Book of 99 online slot is based on ancient Trojan mythology and forms part of a growing number of ‘Book of’ slots. This high RTP online accepts a wide range of betting limits and features a max win of up to 12,075x your base wager.

Landing three scatter symbols during the base game triggers the Book of 99 bonus round. During this round, a random standard symbol is randomly selected to expand to create a winning combination. This bonus can also be triggered when you collect 99 wilds.

Book of 99 Online Slot

2. Magic Garden 10

Feature Description
Provider Smartsoft Gaming
Min/Max Bet $0.10/$100
Paylines 10
Max win 50,000x
RTP 98.9%

While Magic Garden 10 does not form part of the jackpot slots category, it features a significantly high max win equal to 50,000x of your base wager. In addition to its high slot machine RTP, this game is popular thanks to its crisp animations and bonus features.

You can trigger a round of 10 free spins with three scatter symbols. Moreover, with every payout, whether during the base or bonus games, you’ll have the option to gamble it with a chance of doubling it up to five times.

Magic Garden 10 Online Slot

3. Marching Legions

Feature Description
Provider Relax Gaming
Min/Max Bet $0.10/$30
Paylines 243
Max win 10,000x
RTP 98.12%

Marching Legions is a Roman civilization-themed slot featuring superb graphics and animations. This 5×3 grid game does not feature paylines, so to create a winning combination three or more matching symbols must land on adjacent reels.

Like many top online slots, Marching Legions features multiple bonus rounds, including Marching Re-Spins and free spins. Moreover, while you can wait for the free spins round to trigger randomly, you can buy it instantly for 120x your base wager.

Marching Legions Online Slot

4. Money Cart 2 Bonus Reels

Feature Description
Provider Relax Gaming
Min/Max Bet $0.10/$50
Paylines N/A
Max win 5,000x
RTP 98%

Money Cart 2 Bonus Reels is an unusual slot from Relax Gaming. The sequel to the successful slot, Money Train, this high RTP slot online is entirely based on the Hold&Win bonus feature. This means that there is no base game and you’ll get to play the bonus round with every spin.

To start seeing some of the slot’s main features, you’ll need to land three or more bonus symbols. This will trigger a re-spin and may introduce one or more of the slot’s special features or personalities that can boost payouts, increase bonus symbols, or increase the value of existing symbols.

Money Cart 2 Bonus Reels Online Slot

5. Blood Suckers

Feature Description
Provider NetEnt
Min/Max Bet $0.25/$50
Paylines 25
Max win 900x
RTP 98%

Blood Suckers is a vampire-based online slot that led to the creation of multiple sequels. While this game does not have the highest max win or the best animations, it is one of the highest RTP casino slot machines developed by NetEnt.

During the Blood Suckers base game, one of two bonus features can be triggered randomly. 10 free spins with multipliers of up to 100x can be unlocked with three or more scatters. It takes three bonus symbols, meanwhile, to unlock the bonus game.

Blood Suckers Online Slot

High RTP Slot Sites

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Where to Play High RTP Slots

Now that you’ve seen our slot machine RTP list, let’s look at the top casinos that feature the best payout slots.

  1. TG.Casino Best Casino for High RTP Online Slots.
  2. WSM CasinoAccepts a Wide Range of Payment Limits.
  3. Mega DiceGenerous Welcome Bonus Worth up to 1BTC.
  4. Lucky Block – Top Casino for Demo Slots.

Reviews of the Top Casinos for Highest RTP Slots 2024

In addition to offering the highest RTP online slots, our recommended online casinos provide a high-quality user experience. Discover their key benefits and generous bonuses in the following reviews.

1. TG.Casino – Best Casino for High RTP Online Slots

  • Payout time: 0 – 1 hour
  • Established: 2023
  • License: Curacao
  • Headquarters: Curacao
  • Restricted states: None (Requires VPN)

TG.Casino High RTP Slots

Our Verdict 9/10

TG.Casino is our experts’ top casino to play all the featured high RTP slot machines. This Curacao-based site is exclusively available through the Telegram messaging app, but you can use your app credentials to create your casino account. Moreover, if you’re connecting from the US, you’ll need to use a VPN in Ireland to access the full range of games.

There are over 6,000 virtual and live games available at TG.Casino, including many by NetEnt, Smartsoft Gaming, and Relax Gaming. You can try all these high RTP slots in demo mode for free or switch to real money mode for a chance to win real payouts.

This casino exclusively accepts cryptocurrency payments, but it also offers an in-built exchange where you can buy Bitcoin with USD. As you place your first deposit, you’ll be rewarded with a generous bonus and you’ll find several TG.Casino bonuses available afterward.

Features Overview

  • Casino: 10/10
  • Live Casino: 10/10
  • Mobile Experience: 10/10
  • Desktop Experience: 8/10
  • Customer Support: 10/10
  • Payment Methods: 8/10
  • Promotions & Rewards: 9/10
  • Registration Process: 9/10

Top casino offers:

Offer Description Promo code Rollover Minimum deposit
Sign-Up Offer 200% up to 10ETH Not required 60x $25

Pros

  • Try high RTP slots for free
  • Accepts minimum deposits of 0.0001BTC
  • Fast payouts with cryptocurrencies
  • 24/7 live chat and email support

Cons

  • Can only be accessed on Telegram
  • VPN connection required for full catalog

2. WSM Casino – Accepts a Wide Range of Payment Limits

  • Payout time: 0 – 1 hour
  • Established: 2023
  • License: Curacao
  • Headquarters: Curacao
  • Restricted states: None (Requires VPN)

WSM Casino High RTP Slots

Our Verdict 9/10

WSM Casino is another new online casino that features all the games on the slot machine RTP list. This desktop and mobile-friendly platform requires VPN access from the US with a server based in a supported country, such as Ireland. Once connected, you can complete a 30-second sign-up form and place an instant deposit using Bitcoin or any of the 10+ supported Altcoins.

Just like TG.Casino, WSM Casino offers free play mode across its collection of its best payout slots. This site also makes filtering your game selection easier by letting you choose games from a specific software provider, such as Relax Gaming.

New players who join this site and place a qualifying deposit can benefit from a generous bonus worth up to $25,000. While the collection of WSM Casino bonuses is still fairly limited, existing players can participate in Game of the Week promotions and participate in Drops and Wins bonuses by playing eligible games.

Features Overview

  • Casino: 10/10
  • Live Casino: 10/10
  • Mobile Experience: 10/10
  • Desktop Experience: 9/10
  • Customer Support: 10/10
  • Payment Methods: 8/10
  • Promotions & Rewards: 8/10
  • Registration Process: 9/10

Top casino offers:

Offer Description Promo code Rollover Minimum deposit
Sign-Up Offer 200% up to $25,000 + up to 200 free spins Not required 60x $30

Pros

  • Generous welcome bonus
  • Fast transfers with 10+ cryptocurrencies
  • Free play mode across 6,000+ games
  • Top casino for desktop users

Cons

  • Requires a VPN connection for US players
  • No USD deposit accepted

3. Mega Dice – Generous Welcome Bonus Worth up to 1BTC

  • Payout time: 0 – 1 hour
  • Established: 2023
  • License: Curacao
  • Headquarters: Curacao
  • Restricted states: None (Requires VPN)

Mega Dice Casino High RTP Slots

Our Verdict 9/10

Mega Dice is the third-best online casino on which to play the best payout slots in the US. This Curacao-licensed platform requires a VPN connection in a supported country, such as Ireland, but features a simple registration form that can be filled in by US players. Once registered, you can deposit a minimum of 0.0001BTC or equivalent using 10+ supported cryptocurrencies.

If you don’t own any cryptocurrency, this site provides you with a convenient way to buy some using debit/credit cards. Once you’ve made your purchase or placed your first deposit, you’ll be able to use Mega Dice bonus codes to unlock a generous new player reward or one of several ongoing promotions.

While Mega Dice does not offer the option to filter slots with the highest RTP, it does give you the option to view games by provider. You can also search for games using their name, so if you’re not sure which game to play next you could enter one of our recommended titles.

Features Overview

  • Casino: 9/10
  • Live Casino: 9/10
  • Mobile Experience: 10/10
  • Desktop Experience: 10/10
  • Customer Support: 10/10
  • Payment Methods: 8/10
  • Promotions & Rewards: 9/10
  • Registration Process: 9/10

Top casino offers:

Offer Description Promo code Rollover Minimum deposit
Sign-Up Offer 200% up to 1BTC + 50 free spins + sports free bet Not required 60x $20

Pros

  • Licensed in Curacao
  • 30+ high RTP slots
  • 24/7 customer care
  • Low welcome bonus deposit limit

Cons

  • Relatively high wagering requirements
  • VPN connection required in the US

4. Lucky Block – Top Casino for Demo Slots

  • Payout time: 0 – 1 hour
  • Established: 2022
  • License: Curacao
  • Headquarters: Curacao
  • Restricted states: None (Requires VPN)

Lucky Block Casino High RTP Slots

Our Verdict 9/10

Like many offshore casinos, Lucky Block is based and licensed in Curacao. It’s available to players in the US but requires you to connect to it using a VPN with a server in a supported country, such as Ireland. This site has a simple sign-up form that you can complete using just an email address and supports safe and fast deposits in Bitcoin and numerous Altcoins.

Lucky Block has partnered with 20+ software providers and offers a game catalog with over 6,000 titles. Among these are many of the highest RTP casino slot machines 2024, including Book of 99 and Blood Suckers. You can play all these games with real money or try them for free in demo mode.

There are several ways to unlock Lucky Block Casino bonuses as either a new or existing player. Generous matched bonuses are available through several promotions while weekly free spins are offered through the Game of the Week offer.

Features Overview

  • Casino: 9/10
  • Live Casino: 9/10
  • Mobile Experience: 9/10
  • Desktop Experience: 9/10
  • Customer Support: 10/10
  • Payment Methods: 8/10
  • Promotions & Rewards: 9/10
  • Registration Process: 9/10

Top casino offers:

Offer Description Promo code Rollover Minimum deposit
Sign-Up Offer 200% up to $10,000 + 50 free spins Not required 60x $20

Pros

  • Mobile-friendly casino site
  • Fast payouts with cryptocurrencies
  • Welcome bonus worth up to $10,000
  • Lots of high RTP slots available

Cons

  • No USD deposits accepted
  • VPN connection required in the US

How We Choose the Best High Payout Slots

To ensure that provide you with the top online casinos, our team of researchers carries out extensive research on numerous platforms. Discover how we rate online gambling sites using an in-house scoring system that’s been designed by our expert reviewers to find the best payout slots.

What is RTP in Slots?

The Return to Player (RTP) is a percentage that outlines the likely payout from an online slot over time. To make this calculation, independent test labs, such as GLI, test a slot for thousands of spins and keep track of the money wagered and the payouts received.

Total payouts are divided by total wagers and the answer is multiplied by 100 to represent it as a percentage. As a result of this calculation, test labs can determine that 99% RTP slots, for example, provide payouts of $99 for every $100 wagered.

The highest RTP casino slot machines are those that have a payout percentage higher than 97%. Most slot odds are typically lower than this value and normally lie in the range of 94% and 96%.

How do you find the RTP of a Slot Game?

If you wanted to, you could find a slot RTP by copying the process of independent test labs. You won’t even need to spend any money as you can simulate this test in free play mode. You will, however, need to dedicate a significant amount of time to reach an accurate RTP as most labs determine this value after thousands of tens of thousands of spins.

Over 10, 20, or even 50 spins, the slot’s RTP is not necessarily evident. This is the key attraction of this game category since anything can happen on a small number of spins. While over the long term, you’ll likely lose $2 for every $100 wagered on a 98% RTP slot, playing just a couple of rounds could result in a profit or even a jackpot win.

RTP vs Volatility

The Return to Player percentage should not be mixed with the slot’s volatility or variance. While the RTP outlines the expected payouts, the volatility indicates the nature of these payouts. Slots tend to be split into three types of volatilities:

  • Low volatility – Payouts are likely to occur more often but will likely have small values.
  • Medium volatility – The frequency and value of payouts are considered average.
  • High volatility – Slot payouts tend to happen less frequently but are likely to have higher values.

Slots with high RTPs can have any type of volatility, and while the majority are likely to have high volatilities, you will also come across games with medium or low volatilities.

Benefits of Playing High RTP Slots

Slot machines with the highest RTP are very popular in the US for several reasons. Below, we’ve explored the key advantages of these types of games and highlighted some of their main drawbacks.

1. Best Payout Slots

The best payout slots often have a high RTP. Even though there is no guarantee that high RTP slot machines will deliver any payouts, the likelihood is greater than on lower RTP slots. Therefore, unless you want to play a specific game, choosing slots with a high RTP is likely to lead to better results.

2. Exciting Gameplay

Many of the world’s leading software providers are competing in the best RTP slots category. This means that, in addition to a greater chance to win high payouts, these slots are filled with entertaining and innovative bonus features, mechanics, and gambling options.

3. Mobile-Friendly

The vast majority of the best RTP slots have been created in the past 10 years. As a result, they are optimized for mobile use and have been developed using HTML5 and similar technologies. This means that you can play these games from anywhere using a web browser.

Pros and Cons of High RTP Online Slots

Pros

  • Likely to pay out more
  • Offer lots of bonus features
  • Mobile-friendly and responsive
  • Developed by leading software providers

Cons

  • Don’t feature many progressive jackpots
  • No guarantee of payouts or profits

Best RTP Slot Developers

Get to know some of the leading software developers of the highest RTP slots of 2024. Offering some of the best payout slots in the country, these developers have games with an RTP above 98%.

Relax Gaming

Launched in 2010, Relax Gaming has grown to become a leading software developer with offices in Sweden, Malta, Gibraltar, and several other European countries. This brand is renowned for releasing some of the best-known highest RTP online slots as well as creating innovative grid designs and superb graphics and animations.

These are the highest RTP slots developed by Relax Gaming:

  1. Book of 99
  2. Marching Legions
  3. Money Cart 2 Bonus Reels
  4. Money Cart Bonus Reels
  5. Epic Joker

NetEnt

NetEnt is one of the leading software providers of all time and has won numerous awards, both for specific games and for its mobile-friendliness and innovation. The Nordic company launched in 1996 and has been responsible for some of the best payout slots in the US, including several slots with a high RTP. Many of its games feature 3D animations and one or more exciting bonus features.

These are NetEnt’s highest RTP casino slot machines:

  1. Mega Joker
  2. Jackpot 6000
  3. Blood Suckers
  4. Kings of Chicago
  5. Secrets of Atlantis

Smartsoft Gaming

While Smartsoft Gaming does not share the same global reputation as NetEnt, Relax Gaming, and other top brands, this niche creator is quickly developing a name for itself by producing entertaining slots with high RTPs. Based in Tbilisi, Georgia, the company launched in 2015 and has created numerous slots featuring engaging gameplay and rounds of free spins.

These are the best payout slots developed by Smartsoft Gaming:

  1. Magic Garden 10
  2. Apollo 77
  3. Wild Jungle
  4. Multi Hot Ways
  5. Genie’s Bonanza

Responsible Gambling

While playing high RTP slot machines is fun, you should always ensure that you do not wager money that you cannot afford to lose. The Return to Player percentage does not offer any guarantees, so while you can use it to determine which high RTP slot games to play, you should not expect to win high or frequent payouts.

Practice responsible gambling to keep playing slots a fun experience. All our featured casinos provide helpful resources and voluntary limits that you can use to keep your gambling activity under control. If you require further assistance, you should contact a casino’s customer care team or speak to a professional organization.

Best Payout Slots

If you’re looking for the best 99% RTP slots in the US, you should play Relax Gaming’s Book of 99. This visually impressive game offers plenty of exciting bonus features and supports minimum bets of $0.10. You can play it instantly by joining TG.Casino and placing a deposit using Bitcoin or one of the supported Altcoins.

FAQs

What is a slot machine RTP?

Are the highest RTP slots guaranteed to pay out?

Why should I play slots with the highest RTP?

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How are the slots with the best RTPs identified?

Affiliate Disclosure: Techopedia may receive advertising commissions for visits to a suggested operator through our affiliate links, at no added cost to you. However, all our recommendations are unbiased and follow a thorough review process. Gambling can be addictive, please play responsibly and you must be at a legal gambling age.

Sergio Zammit

Sergio is casino expert writer with links to several online casino hubs. He has written extensively on this sector, particularly on blackjack, poker, and roulette. He joined Techopedia in 2023 and shares his expertise in numerous guides and reviews.