book of 99 best payout slot

When playing online slots, the first thing we do before even thinking about pressing the spin button is check the payout percentage, also known as the Return to Player, in the game rules. While slots may look the same on the outside, their inner workings may differ substantially. The heart of the slot is the mathematical model that determines how often and how big a prize you win.

A higher Return to Player means a more player-friendly maths model so you should make it a top priority to seek out the best online slot payout percentages when playing at online casinos.

The Best Slot Payout Casinos

We have made a selection of high-paying casinos that offer the best-paying slots from all the major providers, including Relax Gaming, Push Gaming, NetEnt, Play’n GO, Pragmatic Play, and many more.

Play real-money online slots with high payout percentages, reaching up to 99% payout.

The Advantages Of Playing a High Payout Slot Compared to a Low Payout Slot

The higher the payout of a slot, the better your odds of winning. It’s as simple as that.

To illustrate the effect of playing an online slot with a high RTP versus playing with a lower RTP, we have made some example calculations.

In the following table, we show how many spins you theoretically get to play before your money runs out, based on a starting balance of €/£/$/100 and a stake of €/£/$/1 per spin. In this example, we have compared slots with four different payout settings: 98%, 96%, 94%, and 92%. The cycle ends when the balance reaches below €/£/$/1.

Payout% (Return to Player)Number of Spins

Higher payout slots = more spins and more chances to win big

As you can see, the 98% payout slot will give you more than 4 times the number of spins before your money runs out, quadrupling both your playing time and the chances of winning big.

big-bad-wolf-quickspin best payout

Top 10 Best-Paying Slots of All Time

These 10 online slots are the best payout slots online of all time and are a great place to start if you are looking for online slots that give you a better bang for your buck than other slots.

1. Book of 99 (Relax Gaming): 99%

Book of 99 is our winner as it’s the highest-paying online slot ever created.

The RTP is exceptionally high, but the volatility is still at the highest possible level (5/5) so do play responsibly. While the slot offers players the chance to win up to 12,075x the bet amount, keep in mind that the game can’t be used towards bonus wagering as the RTP level is of this magnitude.

2. Mega Joker (NetEnt): up to 99%

One of the most popular NetEnt slot machines is Mega Joker. Old-fashioned fruit machine slots always do well, and that includes the internet. Moreover, Mega Joker has an amazing payout rate. You do need to play with 10 credits per spin and consistently use the Supermeter.

3. Jackpot 6000 (NetEnt) – 98.9%

Jackpot 6000 is an online slot machine by NetEnt. The payout rate of the Jackpot 6000 slot machine runs to a maximum of 98.9%.

You do need to play the Supermeter whenever you can to take advantage of the maximum RTP. You play the Supermeter using the credits you won during the base. In other words, you need to play the Supermeter whenever you win to ensure the best possible odds.

4. 1429 Uncharted Seas (Thunderkick): 98.6%

1429 Uncharted Seas not only has an extremely high payout rate, but the slot also has an extraordinarily low variance. That means there are many prizes, but the rewards are not that large. Many casinos would consider you a cheater if you keep playing your bonus money on 1429 Uncharted Seas.

With the 1429 Uncharted Seas slot, Thunderkick takes you on a journey of discovery. On the ship, you’ll make your way through mermaids and sea monsters, and prizes come often.

5. Marching Legions (Relax Gaming): 98.12%

The game creator Relax Gaming has created many popular slots, some with very high RTP percentages. Marching Legions from 2020 is their second highest-paying slot and 5th on our list.

6. The Catfather (Pragmatic Play): 98.10%

The Catfather from 2016 is Pragmatic Play’s contribution to this top list as this slot averages an RTP of 98.10%. Feline and low volatile slot fans could be in for a treat with this slot where wins of up to 2,251x stake can be won.

7. Hero Clash (Stakelogic): 98.10%

While the best RTP version of Hero Clash averages an impressive payout of 98.10%, be aware that there are five other RTP versions out there as well. These RTP versions average 96.10%, 94.16%, 92.06%, 90.11%, and 88.08%.

8. Blood Suckers (NetEnt): 97.99%

Blood Suckers is just about a perfect option for wagering a casino bonus: an extremely high RTP and low variance. As a result. many casinos banned Blood Suckers from being played with bonus money because it’s almost certain that you’ll reach your bonus play-through requirements on it with a profit.

9. Jokerizer (Yggdrasil): 98%

Jokerizer from Yggdrasil reaches an overall and long-term RTP of 98% when the Jokerizer Mode is activated. However, when playing without the Jokerizer Mode, the RTP averages 88.8%.

10. Big Bad Wolf (Quickspin): 97.34%

Big Bad Wolf has been one of game provider Quickspin´s biggest releases to date. The storyline doesn’t need much presentation as most of us are familiar with the Big Bad Wolf and the three little pigs.

The Best Payout Online Slots By Provider

As you probably know, there are hundreds of slot providers that have created thousands of online slots. We have made a selection of the best and most popular providers and listed the top 10 highest payout slots per provider.

high payout slots

Top 10 best payout NetEnt slots

NetEnt has released several high payout slots, especially when you dig into their older catalog. Their best-paying slot is Mega Joker, a classic Joker-style slot with a base game and a top game. Second on the list is Blood Suckers, a game with such a high RTP that it is banned from playing with bonus money.

Other crowd favourites include the fantastic Guns N’ Roses, Hotline, and Secrets of Atlantis.

  1. Mega Joker – 99.00% RTP
  2. Blood Suckers – 97.99% RTP
  3. Secrets of Atlantis – 97.07%
  4. Jack Hammer 2 – 97.07% RTP
  5. Hotline – 97.04% RTP
  6. Steam Tower – 97.04% RTP
  7. Motörhead – 96.98% RTP
  8. Guns N’ Roses – 96.98% RTP
  9. Coins Of Egypt – 96.97% RTP
  10. King of Slots – 96.96% RTP

Top 10 best payout Play’n GO Slots

Swedish game developer Play’n GO has become one of the leading online casino game suppliers in recent years due to popular slot titles like Book of Dead, ReactoonzRise of Olympus, Gemix, and many more. While most of their slots’ payout percentages hover around the 96.20% mark, there are several high-paying Play’n GO slots to be found.

  1. Rage to Riches – 97.12% RTP
  2. Mystery Joker 6000 – 96.98% RTP
  3. Xmas Joker – 96.98% RTP
  4. Wildhound Derby – 96.93% RTP
  5. Fortunes of Ali Baba – 96.89% RTP
  6. Pearl Lagoon – 96.88% RTP
  7. Myth – 96.88% RTP
  8. Cash Pump – 96.86% RTP
  9. Pearls of India – 96.84% RTP
  10. Gemix – 96.83% RTP

Top 10 best payout Big Time Gaming slots

Big Time Gaming is one of the most popular and respected online casino slot game suppliers in the industry. The company was launched in 2011 in Australia by three experienced casino professionals, including CEO Nik Robinson.

They are widely well known for their popular games and for being the inventor of the Megaways slots mechanic. They are also known and respected by players for the high payout percentages of their slots.

  1. White Rabbit Megaways – 97.24% RTP
  2. Queen of Riches Megaways – 96.90%
  3. Extra Chilli Megaways – 96.82% RTP
  4. Opal Fruits – 96.75% RTP
  5. King of Cats Megaways – 96.72% RTP
  6. Rasputin Megaways – 96.68% RTP
  7. Max Megaways 2 – 96.65% RTP
  8. Kingmaker Megaways – 96.65% RTP
  9. The Final Countdown – 96.65% RTP
  10. Slot Vegas Megaquads – 96.61% RTP

Top 10 best payout Quickspin slots

Quickspin was founded in 2011 by three experienced online professionals from Sweden with previous top positions at NetEnt and Unibet. In 2016 the company was acquired by iGaming giant Playtech.

One of the most popular slot suppliers for years, Quickspin released plenty of successful slots such as Sevens High, Sakura Fortune, Phoenix Sun, Big Bad Wolf, Cash Truck, and the Sticky Bandits franchise.

Quickspin is not only known for their highly-polished, entertaining slots but also for the very high payout percentages of their titles.

  1. Big Bad Wolf Christmas Special – 97.34% RTP
  2. Big Bad Wolf – 97.34% RTP
  3. Treasure Island – 97.07% RTP
  4. Mighty Arthur – 96.94% RTP
  5. Gold Lab – 96.90% RTP
  6. Genies Touch – 96.90% RTP
  7. Polar Paws – 96.84% RTP
  8. Goldilocks – 96.84% RTP
  9. Tiger’s Glory Ultra – 96.72% RTP
  10. The Wild Chase – 96.72% RTP

Top 10 best payout Pragmatic Play slots

Pragmatic Play is a thriving casino game developer that was founded in 2015.

In recent years their casino games have become some of the most popular online with slots titles like Sweet Bonanza, Sugar Rush, Wolf Gold, Big Bass Bonanza, Mustang Gold, and The Dog House.

  1. Wild Wild Riches – 96.77% RTP
  2. Big Bass Splash – 96.71% RTP
  3. Christmas Big Bass Bonanza – 96.71% RTP
  4. Bigger Bass Bonanza – 96.71% RTP
  5. Lucky Grace & Charm – 96.71% RTP
  6. Floating Dragon – 96.71% RTP
  7. Hot to Burn – 96.71% RTP
  8. Emerald King Rainbow Road – 96.71% RTP
  9. Big Bass Bonanza – 96.71% RTP
  10. Return of the Dead – 96.71% RTP

Top 10 best payout Push Gaming slots

Push Gaming was founded in London in 2010. The success of the British casino game supplier wasn’t instant, but the game provider has started releasing one slot hit after another in recent years.

One common trait among Push Gaming slots, besides offering excellent RTPs is that they are highly volatile and often offer enormous max win potential.

  1. Wild Swarm – 97.03% RTP
  2. The Shadow Order – 96.98% RTP
  3.  Wild Wheel – 96.98% RTP
  4. Jammin’ Jars – 96.83% RTP
  5. Razor Shark – 96.70% RTP
  6. Joker Troupe – 96.68% RTP
  7. Viking Clash – 96.67% RTP
  8. Fat Drac – 96.57% RTP
  9. Razor Returns – 96.55% RTP
  10. Big Bamboo – 96.52% RTP

How is the RTP of a casino game determined?

The theoretical RTP of a casino game is determined by playing tens of millions of spins and then dividing the total payouts by the total stake x 100%.

Be aware that a lot of online casino games (mostly slots) may have different payback settings across different casinos. So, in one casino an online slot may have an RTP of 96%, while in another casino the same slot may pay back only 94% of all money that has been put in. Always check the game rules to see if you are playing a game in the highest payout setting.

If you are unsure what the highest RTP is for a certain game or want to find out which online casino offers the best-paying version of your favourite slot, use the search bar above and we will answer both questions within seconds.

Frequently Asked Questions About High-Payout Slots

Does playing high-payout slots guarantee I will always win?

No, it does not. Every casino game has a house edge, including High-RTP slots. However, you will benefit from more spins before you run out of funds and, therefore, better odds of landing a big win.

Can I influence the RTP of an online slot?

No, you cannot influence or alter the RTP of an online slot. So betting patterns, number of pay lines, bet size, and time-on-machine will not alter the payout percentage in any way, shape, or form.

Do high-payout jackpot slots exist?

Good question and if you have ever found one, please tell us about it. No, jackpot slots tend to have very low payback percentages as a big chunk of each bet goes toward feeding the progressive jackpots, leaving little behind for wins during the game’s normal slot play.

How do slot payouts compare to other casino games?

In general, most popular table games have a lower house edge, and thus a higher payout percentage than most slots.

Why do many online casinos offer slots with lower RTPs?

Most online casinos choose to offer their slots in lower RTP settings to increase the house edge, driving bigger profits.

What is considered a high payout percentage for slot machines?

Slots with a payback percentage of 97%, 98%, or 99% are considered high payout slots. They are rare, but they do exist!

What does Return to Player (RTP) mean, and how is it calculated?

The Return To Player is a percentage that shows how much the slot pays back to the player. The RTP is calculated over billions of spins and is always an average. The RTP also defines the online casinos’ long-term win margin on a specific slot. The RTP percentage of each slot can be found in the slots info section or game rules.