William Hill Shop/ In-Store Offers
Maximise your betting experience at William Hill shops by snagging a Plus Card, which lets you access exclusive in-store offers and promotions. Keep a...
Read More
If you're diving into online slots, always check the RTP, or Return To Player, as it represents the potential payout percentage over time. High RTP games like Starburst (96.09%) and Fruit Warp (97%) are great picks for maximising your returns, especially when taking advantage of casino promotions.
Online casinos offer a variety of popular games; however, online slot games are the most popular, with an abundance of titles available. These work in unique ways, bringing distinctive themes and gameplay formulas, but one factor remains consistent across all releases: RTP.
If you haven’t come across RTP before, it is simply an abbreviation of ‘Return To Player’, referenced often in slot game information at OddsMonkey. It refers to a theoretical percentage of stakes that could be returned to players in prize values throughout the lifespan of an online slot or digital casino game. This is determined by the game’s volatility, variance, and payline system; however, keep in mind that the gameplay is determined by randomisation mechanics, which make gameplay unpredictable.
When using casino promotions and bonus offers in casino matched betting, RTP is a crucial consideration when selecting games to use your free credits on to get the best expected value. Some players may choose games with a high RTP, as they are programmed to take less of the total amount paid in as profit, which means more of the total stake value wagered is used to fund prizes.
However, it is important to remember that a slot game with a higher RTP compared to another does not mean you will return more from your playing session. A higher RTP does not mean you are more likely to be successful on your next spin, as individual results are determined by the game’s random number generator.
As a result, we here at OddsMonkey have selected a handful of slots with the highest RTP that can be used should you take RTP into account in any promotions or offers you may have. One tool you can use alongside these slots is the expected value calculator, which lets matched bettors compare the value of their promotion, the qualifying cost, and the slot’s RTP to understand what they could expect to be returned.
The first of the highest RTP slot games we will mention is the Starburst slot from NetEnt. This space-themed release has an RTP of 96.09%, 10 different paylines, and 7 symbols within its paytable. A star-represented wild symbol acts as this title’s main bonus, and if landed, it can substitute for all other symbols while also expanding.
Fruit Warp is another of the highest RTP slots available if you have casino promotions available. This Thunderstruck game has a 97% RTP and 9 paylines that work both ways across the playtable. The reels change each spin; however, 9 fruit symbols will appear in some way, shape, or form each time. The main bonus in this title relates to landing 5 matching symbols in the same spin, and this presents a multiplier metre that could be progressed along should the trigger appear in consecutive spins.
Reel Kingdom’s Big Bass Bonanza is one of the most popular titles out there. It is also one of the highest-RTP slot games, with an RTP of 95.67%. This game has 10 paylines spread across its 5×3 playgrid and 10 different types of base game symbols. The main bonus is a free spins feature, in which fisherman symbols can catch values attached to small fish symbols.
Traditional gameplay is more central in this Gold Train slot; however, don’t let it distract you from the fact that it is one of the highest RTP slot games. This game comes from Pragmatic Play, and due to its playgrid being only 3×3 in size, it only has 3 paylines. The paytable includes seven different symbols, and the main bonus is a progressive feature that can add random prizes to train carriage symbols.
The final of the highest RTP slot games we will mention is Diamond Mine Megaways from Blueprint Gaming, with an RTP of 97.03%. With the transformative Megaways mechanic, the play grid is dynamic and changes with each spin, resulting in up to 117,649 paylines. 10 separate base game symbols make up the paytable, and in terms of bonuses, there is a mystery symbol, dynamite wild and a free spins feature with a progressive multiplier and cascading mechanic.
Now that you understand what RTP means and what the highest RTP slot games actually are, this information can be used should you wish to start any casino matched betting endeavours. Online casinos can offer sign-up and reload bonuses related to slots specifically, and understanding how to use them strategically makes claiming these offers more straightforward.
At OddsMonkey, we have a whole range of betting calculators that could be used and a plethora of matched betting casino offers housed in one place, two things that can be used in tandem to potentially make a profit.
For more articles to help you with casino matched betting, feel free to check out our dedicated blog section.
Most slot games have an RTP of around 90-92%, so any slot game that has an RTP of 96-97% is considered very high for an online slot game.
No, the RTP is calculated over a huge number of plays, meaning your game may not be affected by the RTP value.
Yes, RTP can change depending on the casino or game version. Players should not assume that every version of a particular slot operates with the RTP that has been quoted in this piece, as it should be checked first.
A slot’s RTP is usually listed within the game information, help or paytable menu. Casinos tend to also provide the RTP on the game page, allowing users to check it before playing.
Maximise your betting experience at William Hill shops by snagging a Plus Card, which lets you access exclusive in-store offers and promotions. Keep a...
Read More
Matched betting's a clever way to profit from bookmakers' free bets without relying on luck, and it's completely legal in the UK as long as you're ove...
Read MoreRead the full post to find out more.
Read MoreRead the full post to find out more.
Read More
Unlock £29+ with our offer guides. Each guide will walk you through the back and lay bets needed to make your first matched betting profits.
Earn immediately. No payment details required
Start your FREE Trial
Matched betting is one of the best side hustles in the UK, and at OddsMonkey we have all the tools and resources you need to get started. Find out how you can easily turn bookmaker offers into tax free profits today.
*DISCLAIMER: We’re legally required to state that there is no guarantee of specific results each month. The amount of money that you earn can vary dependant on the time and effort that you commit each month.
This website is strictly for over 18’s. If you do have any concerns about gambling please contact GambleAware
© Copyright 2011-2026 Terms of Use | Privacy Statement