Even the most avid slots fan sometimes wonders, “what is RTP?” It seems like a pretty complicated concept but we’re here to break it down for you so that you get to grips with the most integral part of any online slots game.  

First Things First: What Is RTP?

RTP is a theoretical figure, illustrating the Return to Player of a casino game. For example, a 96% RTP slot will pay out £96 for every £100 – eventually. We say “eventually” because it won’t always work out to the figure stated over £100. Game developers work out the RTP slot figure by spinning a game thousands of times to ensure that it is accurate.

How to Find Your Own RTP

If you’re curious about what your own RTP is on a specific game or even over a total session, you can use a very simple formula:

How to Calculate RTP

The reason you might want to do this is to get an idea of your own spending while playing slots online.

High RTP Casino Sites – Which Casino Has the Best Return to Player?

In the online casino world, you’ll see many sites that will tell you that a casino itself has a specific RTP. This isn’t actually an accurate figure, though, as casinos don’t have their own RTPs; their games do.

So, keep this in mind when looking for the best paying online casinos. It’s more important that you look at the RTPs of the specific games you’re playing at the casino, since payout percentages can vary from site to site. 

Take a slot like Big Bad Wolf Megaways, for example. This slot game is available at different casinos with three different RTPs: 90%, 94% or 96%. In our slot reviews, we’ll always let you know if the RTP is variable – so you’ll know that, if you want to play any games at a real-money casino, you should find out what the exact RTP is before signing up.

Best RTP Slot Games

When we review online slots here at Slots Temple, we always include the game’s stated RTP. So, you’ll be able to gauge if the payout percentage makes the slot worth playing. We consider games with RTPs of 95.9% to 96.2% around average, while anything higher than that is quite impressive. Anything lower than that, and we wouldn’t recommend playing it – that is, unless it’s a progressive jackpot game (more on this later).

There are some instances when the RTP is much, much higher than the norm. We’re going to let you know about which games we recommend – both because they have high payout percentages and are quality game. We want you to enjoy playing high RTP slots, so we’re leaving out any slots that have generous payout percentages but shoddy gameplay. So, read below for our list of the highest RTP slots that are worth playing:

Book of 99 – 99%

In this Relax Gaming-powered slot, the game offers a 5000x top prize and a free spins bonus with expanding symbols (like you would find in Book of Dead). Book of 99’s RTP of 99% is the highest figure you’ll find in the online casino world.

Book of 99 RTP

Blood Suckers – 98%

This is one of the older entries on our list, but it’s still worth a play. Like older games, the max win isn’t very high but, as a low volatility slot, it offers up frequent wins. In Blood Suckers 2, players can look forward to a fee spins bonus with a 3x multiplier and a pick-a-prize round.

White Rabbit Megaways – 97.77%

White Rabbit Megaways has one of the best RTPs of any Megaways game out there. It is one of the first slots to be released with this ground-breaking mechanic, offering players up to 117,649 ways to win during the base game and 248,823 during the bonus. There are also two base game bonus features that further increase your winning potential.

Marching Legions – 98.12%

In this slot, players are sure to be impressed not only with the great 98.12% RTP but also its quirky theme, top win of 10,000x and host of fantastic bonus features like respins, nudges and a multi-level free spins bonus. Marching Legions is definitely a slot worth playing.

Big Bad Wolf – 97.35%

Quickspin’s Big Bad Wolf is a classic nowadays, in part because of its generous RTP of 97.35%. The game features plenty of great bonuses, like extra wilds, bonus meters and a free spins round.

Why Are Progressive Jackpot Slot RTPs So Low?

If you take a look at some of the most generous progressive jackpot games, you’ll notice that their RTPs are much lower than what we consider the average. Normally, when games have payout percentages that are much, much lower than 96%, we wouldn’t recommend them – but progressive jackpots are the exception.

  • Volatile Vikings 2: 94.8%
  • Mega Moolah: 88.12%
  • Beach Life: 93%
  • Age of the Gods: 94.03%

This is because a portion of every bet contributes to the progressive jackpot. So, while it might not seem ideal for a slot game to feature such a low RTP, it makes sense in the grand scheme of things.