main menu

What is RTP In Slots? Return To Player Percentages Explained

If you’ve played online slot games before, you’ve probably heard of Return to Player percentages, which can often appear in the game information or paytable.

Some players may use the RTP rate to determine which slot games they play.  

In this 666 Casino blog post, we’ll explore what RTP is, how it’s calculated and more. So, continue reading to find out!

What Does RTP Mean On Slots?

Return to Player, or RTP, is a theoretical term used to indicate how much a slot game is likely to pay out after playing for a long time. Most online casino slot games have an RTP value ranging between 88% up to 98%, respectively.

Note that the RTP doesn’t act as a guarantee of any potential winnings from a slot game. This is because slots are random games of chance. Instead, the RTP may help punters decide which games to play. For example, some players might gravitate towards high RTP slots instead of low ones.

How Is RTP Calculated?

Calculating your game’s RTP can be simple. Let’s say you’re playing an online slot with a 96% RTP. That would mean that, in theory, the slot averages as paying £96 back out to players for every £100 wagered.

However, it’s important to remember that slots are games of chance, and nothing can ever be guaranteed. You may win more than this, less, or nothing at all.

The RTP is a theoretical value based on averages across millions of simulated spins.

For example, let’s say a particular slot has a 92% RTP. It accrues a turnover worth of £1,200,000, and pays out £1,085,000 in wins. Then, we can calculate the RTP by dividing 1,085,000 by 1,200,000, which equals 0.9042. Meaning the RTP of this specific session would be 90.42%, respectively.

Is A Higher RTP Better?

This really comes down to personal preference. Some slot enthusiasts may only play games that offer a particular RTP rate or theme.

Typically, Jackpot slots have a lower RTP rate, but can also offer a possible Progressive Jackpot prize, which could be worth millions!

This max potential win could appeal to many players, and could be the reason why they chose to play that slot game. 

Additionally, as mentioned previously, RTPs do not act as a guarantee of any winnings. All spins are completely random.

What Is A Good RTP For Slots?

Usually, the average RTP for most slot games falls around 95%. The general rule would be that a slot can have a “good” RTP if it is above this. However, any potential payouts may not reflect the RTP as slots are random in nature.

Many players choose to play games that offer a high RTP rate, but this doesn’t necessarily mean that they will benefit from this during gameplay, as the RTP is a theoretical value.

How Do You Find The RTP On A Slot Machine?

If you play slots online, then finding the RTP should be simple. It’s usually indicated in the Info button, paytable or via the Help icon. However, if it’s unavailable, then you can check for it on the developer’s site.

Which Slot Machines Have The Highest RTP?

The following are some of the high RTP video slots you can play here, at 666 Casino;

  • The Woods: 96.11%
  • 12 Coins: 96.13%
  • The Big One: 96.10%
  • True Wild: 96.37%
  • Sweet Candy Cash Megaways: 96.2%
  • Cache Rush: 96.39%
  • Vegas Repeat Wins: 96.36%
  • Mystery Kingdom Mystery Bells: 96.13%
  • Million Zeus: 96%
  • Space Wars 2: 96.05%
  • Hot Slot Mystery Jackpot Joker: 96.11%


The RTP rate is a theoretical value of how much a player may win back over a long period of time. However, slot games are random, so every outcome is unpredictable and may not reflect the RTP value. You may win more, less or nothing at all. Please remember to always gamble responsibly.

 *All values (Bet Levels, Maximum Wins etc.) mentioned in relation to these slot games are subject to change at any time.