Now that we have established what RTP is and how it works, we can get to the slots that have the highest RTP.
If you find a casino bonus eligible on any of the following slots, you have a relatively high chance of winning.
#10 – The Catfather by Pragmatic Play
RTP 98.1%
The Catfather by Pragmatic Play not only has a high RTP, but a low volatility. As we explain later in this article, this makes it one of the best slots to play with a casino bonus.
As well as its game mechanics, players are bound to love the theme, which plays on common tropes from crime movies, such as The Godfather. Personally, we love the free spins round, which also multiplies winnings by 4x.
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#9 – Marching Legions by Relax Gaming
RTP 98.12%
Marching Legions by Relax Gaming has a high RTP and a high volatility. In fact, the slot comes with 243 paylines.
Players love Marching Legions for a few reasons. Personally, we’re fans of the soundtrack, with its rich orchestral notes, and its artwork, which we believe resembles a mobile strategy game.
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#8 – Dr Jekyll Goes Wild by Scientific Games
RTP 98.2%
Dr Jekyll Goes Wild is a great slot game… if you’re willing to make large bets. This is because the slot has a variable RTP that increases with the more you bet.
To be specific, while the slot has an RTP of 98.2% when you bet over a certain threshold, making low bets can reduce it to around 94.2%. We therefore suggest it only to high-rollers.
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#7 – 1429 Uncharted Seas by Thunderkick
RTP 98.6%
The most appealing game mechanics of 1429 Uncharted Seas is its high RTP and its free spins bonus feature, which can credit you with up to 50 in-game free spins!
Yet the real star of the show is its artwork. Its symbols and design is made to resemble medieval cartography, or, for example, a treasure map from a show such as Pirates Of The Caribbean.
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#6 – Jackpot 6000 by NetEnt
RTP 98.86%
Coming in at 6th place on our list is Jackpot 6000 by NetEnt. In terms of design, NetEnt has gone for a classic 5-payline, Vegas-style slot with traditional symbols.
For anyone playing with a bonus, Jackpot 6000 may be the ideal slot game to play due to its high RTP and low volatility. It even has a low bet size limit, and therefore may be eligible to play with many casino bonuses!
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#5 – Ooh Aah Dracula by Barcrest
RTP 99%
Similar to many slots on this list, Ooh Aah Dracula only has a super-high RTP when you play in high-roller mode. Making large bets boosts the RTP to around 99%.
However, while Dracula will drain you of your blood, Ooh Aah Dracula will drain you of your bank balance, and fast. We only recommend this slot to players with a large bank balance and without a bet size limit.
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#4 – Book of 99 by Relax Gaming
RTP 99%
Book of 99 is Relax Gaming’s take on the popular ‘treasure hunter’ theme that is best exemplified by Gonzo’s Quest or Book of Dead – and it doesn’t try to hide that fact.
Its main appeal is its super-high RTP of around 99%, from which it takes its name. Other cool features include its free spins round, which provides you with the potential of winning 5,000x your bet.
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#3 – Mega Joker by NetEnt
RTP 99%
Mega Joker is a slot famous for its high RTP. Yet most reviews fail to mention that its RTP is variable, and places anywhere between the very low return of 85.28% and the seriously high return of 99%.
When you consider its variable RTP alongside its high volatility, it would be wise to approach Mega Joker with caution.
Yes, the RTP is high; yes, it is attached to a large progressive jackpot, but to utilize the high RTP you need to make large bets and therefore we only recommend it if you have a large balance.
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#2 – Ugga Bugga by Playtech
RTP 99.07%
If you’re looking for the best slot game to play with a casino bonus, Ugga Bugga may be it. Visually, Ugga Bugga may not be the best slot, but its game mechanics are ideal.
Ugga Bugga has a super-high RTP, a low volatility, and a low bet-size, which means you may be able to play it with most casino bonuses. This is a slot we highly recommend.
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#1 – Goblins Cave by Playtech
RTP 99.32%
At present, the slot with the highest RTP is Goblin’s Cave by Playtech.
If you are going to play this slot with a casino bonus, please claim a bonus without a bet size limit, as the RTP of this slot can vary significantly between the values of 94.5% and 99.32%, depending on the size of your bet.
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