CasinoWizard: Only The Best-Paying Online Slots

Would you rather play your favourite online slot with an RTP of 87%, 92%, or 96%?

Use the search bar below and find out within seconds which casinos offer high RTP versions of the best real-money online slots. Let’s make magic.

Looking for high-RTP slots? We’ve got them

We love online slots. We really do. However, not all slots are created equal.

Some are more equal than others, so to speak. What are we talking about?

The Return to Player of slots and how, excuse our French, millions of players are getting screwed by online casinos. Why? Because casinos can offer players the same slot at several different RTP (Return To Player) levels.

While one slot can pay back 96% at online casino A, the same slot can pay back only 88% at online casino B.

So, are you playing on the highest possible version right now? Let us guide you toward the highest-payout slots and only the best high-RTP online casinos.

Top 10 best-Paying slots of all time

These 10 online slots offer players the highest RTP 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.

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.

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%.

8. Blood Suckers (NetEnt): 98%

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.

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%.

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.

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.

4. 1429 Uncharted Seas (Thunderkick): 98.6%

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.

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.

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.

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.

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 offer 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.

We search for the best-paying online casinos - so you don't have to

We understand searching for an online casino that offers the highest RTP version of your favourite slot may be frustrating. After all, you just want to play real money slots without feeling cheated.

The good news is CasinoWizard has done all the unpleasant work for you. We show you which online casino offers each slot in the best-paying configuration.

So, if you are looking for a reliable casino to play the 96.21% RTP version of Book of Dead, we show you the best options. It is as simple as that.

You can focus 100% on having fun while being sure you are always playing with the best possible odds.

Stop losing out and start using

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Tips and frequently asked questions

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.

What are high RTP slots?

A high RTP slot is a slot that is played at the highest possible Return To Player level. This RTP is sometimes called the default RTP. While some online casinos offer high RTP slots, many of them don't. The trick is to find a casino that does. Hint: we can help you with that.

Why is the RTP of a slot so important?

A higher RTP percentage gives the player back more on average from all wagering. Playing on a high RTP version is more beneficial than a low RTP version. You have a better chance to play more spins with your balance and get more chances to hit that big win.

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 a good RTP for slot machines?

All slot machines are created with a long-term advantage for the casinos, so a "good" RTP doesn't exist. However, bad RTPs exist, and these you should avoid at all costs by always choosing to play on the best available RTP version, usually around 96%. Slots with a payback percentage of 97%, 98%, or 99% exist but are very rare.

Why do providers offer slots with different RTPs?

Game providers like Nolimit City, Play'n GO, Hacksaw Gaming, Relax Gaming, NetEnt, Red Tiger, Pragmatic Play, and many more create slots with various RTP versions due to increased demand from casino sites/operators. Online casinos want to be able to choose between different versions when deciding how big a profit margin they want to have on specific slots.

How will CasinoWizard help me find high RTP slots?

The CasinoWizard will help you with the difficult task of finding the best RTP versions of online casino slots. You can therefore be confident you are always playing with the best possible odds when following the CasinoWizard's guidance. He will point you toward the best-paying online casinos for each separate slot, based on where you live.

Why are some slot providers missing?

We have decided to focus on the most popular slot providers and added their games and RTPs to We will add more game studios once they start offering various RTP versions or when a provider becomes increasingly popular among casino players online.    

Does CasinoWizard only focus on online slots or other casino games as well? 

As slots are the most popular casino games online and the preferred game among the CasinoWizard team, this has been the focus since the beginning. However, we are also big fans of other casino games and will therefore expand our portfolio of games as time pass by.  

How can I trust CasinoWizard?

The CasinoWizard team consists of slots enthusiasts and professionals with solid backgrounds in the casino industry. We grew tired of online casinos offering bad RTP versions and therefore made it our mission to help ourselves and other players make better decisions on where to play slots. We regularly check RTPs through our in-house tools to keep all info on updated and intact.

Where can I find the official RTP for slots?

You can find a slot's RTP by logging in to your casino account, loading the slot, visiting the game info or game sheet, and locating the information there.
Every reliable online casino shows this information. If you can't find the RTP, it's time to switch casinos, pronto.

Don't miss out on the latest RTP changes and new slots info