slots rtp

If you are a long term gamer in the slot world or just a fan who loves watching the slots, you might have heard of the term RTP from the game developers or other slot players and probably know its importance. The slot RTP plays a vital role in determining how much a player can expect from the casino payout percentages.

The terms slot RTP, house edge, and slot variance are often confusing, especially for beginners. This article profoundly explains what slot RTP is and how it is calculated. Further, we will also explain what casino slot variance and house edge are and the difference between them and slots RTP to better understand the casino terms and gambling jargons.

What is RTP?

RTP is a term used in casino gaming, which stands for Return to Player. It is the payout percentages that slots give back to the gamers over a certain number of spins. For example, a slot with an RTP of 96% will pay back 96 euros for every 100 euros deposit.

However, that doesn’t mean that for every 100 euros deposit will necessarily give back 96 euros. One thing to note is that this slot figure is calculated after many spins, which mostly go up to millions.

This number of spins is considered theoretical, which makes the slot more exciting. If, for example, you get a slot game that pays 96 euros for every 1000 spins, you will be bored after a short time.

But if you get a slot game that pays over an unknown or theoretical number of spins, it would motivate you to continue playing as anything can happen. This situation is what happens to the casino slots. It is highly unlikely that a player will hit the exact slot RTP percentage figure each time he plays.

Difference between theoretical slot RTP and actual slot RTP

There is a slight difference between theoretical slot RTP and actual slot RTP. Theoretical RTP is the amount of money that a slot machine theoretically pays back based on the amount staked in the game expressed as a percentage.

The theoretical term shows that each slot is random, and therefore there is no same assurance of reaching the payout percentage of any slot. But since the games are fair, anything can happen; that is, the theoretical RTP slots figures can be reached. These figures are displayed in the slots’ pay tables based on their design.

The actual RTP is the amount that the slot pays back over a certain period. This amount is almost the same as the theoretical RTP, but it varies with each casino gaming session.

For example, if you get a winning session on your 1st deposit, you may find that your actual slot RTP is higher than the theoretical RTP. However, if you continue to get losing sessions, your slot RTP payout percentages reduce.

This case is usual for the slot games. So, don’t be shocked when the amount you get slightly differs from the displayed theoretical RTP.

What is the house edge?

A house edge is a mathematical advantage that the gambling slot has over you. In simple terms, it is the amount that remains when the Return to Player RTP is deducted. If the calculated slot RTP was 97% in our earlier example, then the house edge is 3%.

The house edge is what assists the slot providers to cover down their costs. This amount is shared between the casino hosting the slot and the slot developers/providers.

People often look for casinos with a low house edge to increase their progressive jackpots when they win.

What is the variance in slots games?

This term is often confused with slot RTP, mostly because they have closely similar meanings. However, each term has a different wagering requirement. Slot variance is a term used to describe or calculate a slot machine’s performance. It defines the slot RTP calculations.

Slot variance and slot volatility terms mean the same in gambling, though the term volatility is often used more than the variance term. A slot variance will determine how much money a player will walk with after a win.

Slot games with lower variance mean that players will have frequent hits and get money in smaller amounts. On the other hand, high variance means a player will not have small or medium slot wins but will have a random massive win from the progressive jackpots. High slot RTP is usually situated in the bonus features, leading to getting the slots jackpots.

Casino slots with the highest variance or volatility are commonly considered as highly volatile. The ones with average volatility are said to be of medium volatility, and the ones with low variance/volatility are said to be of low volatility.

For example, let’s consider two slots with a similar RTP of 97%. One slot has low volatility, which means it pays more frequently but in smaller amounts. The other slot game has high volatility, which means it pays less often but in more massive amounts.

They both have an RTP payout percentage of 97% calculated over a theoretical number of spins. However, the first slot will pay 9700 euros out of 10,000 euros more often but in smaller amounts. This figure can be 97 euros after 100 or 150 times.

The second slot will also pay 9700 euros out of 10,000 euros less often but in more massive amounts or after big hits. This amount can be 970 euros after 1000 or 2000 times, depending on the slot. These big hits can be hard to get.

Therefore, you should be careful when you see a casino slot on a website with the highest RTP as it can be highly volatile, which means less frequent wins or no wins at all. It depends on your luck.

Rules and regulations governing the slot RTP

There are specific regulations set by casino licensing organizations that casinos must meet concerning slot RTP. They include:

  • Payers should quickly find the RTP of any slot game they host.

The slots RTP are mostly displayed on the slot paytable descriptions. Players can also find them on slot reviews. Otherwise, it should be easy for any player to find the RTP wagering requirements of any slot. You might have noticed that some games have varying RTP. Don’t be surprised as this is normal. Slot providers use this technique to appeal to a broad group of slot players.

  • The casinos can adjust the slot RTP.

Some slot games might offer slots with higher or lower RTP depending on their interest. For example, you might play the same slot at different casinos and notice they have different RTP.

These RTP can be different due to their gaming features and the bet you place in the game. Games that have the latest features with a special deposit bonus might have higher ratings. Some games might also offer favorable RTP percentage for players who use the maximum bet feature or place large bets.

  • The slot games should be random..

The randomness is what makes it possible for players to win in the jackpot slots. Slot games usually use RNG technology to ensure that players get a fair chance of winning or losing.

That is why you can play a particular slot game and hit a jackpot one day and later get nothing the next day. It also makes the game entertaining. An independent third party should test RNG technology.

An excellent way to determine if the RNG technology has been tested is to play at a casino with a reputable license like the UK Gambling Commission or the Malta Gaming Authority. This, however, does not mean that there are no other reputable places to get a license. Just make sure the license is legit.

In short, the RNG technology is programmed to pick a particular set of numbers to attain a consistent RTP.

How is RTP in slot games calculated?

A slot machine with many features and many pay lines usually needs a complicated process of figuring the best RTP for its wagering requirement. The developers need to develop an RTP programmed to give back the exact expected amount it goes into the slot machines.

The slot RTP is calculated by taking the amount paid back to players divided by the total number wagered into the slot machines expressed as a percentage. For example, if a game pays 9700 euros when the total amount wagered by players is 10,000 euros, the RTP will be calculated as:

(9700/10,000)*100% The answer is 97%.

As we mentioned earlier, the slots RTP is calculated over many spins, going up to millions. The 3% is remaining is kept back. This money might not sound huge but consider how many players play a particular game per day and how much they gamble in it.

Another thing to keep in mind is that the main thing that determines whether a player will win or lose is the RTP, determined by the Random Number Generator technology.

But don’t worry about the slot RTP effectiveness because, since September 2016, all casinos have been required to closely monitor the actual RTP to ensure that their RNG technology is working correctly.

The whole point of playing casino slots is luck. These are games of chances, which means that the results are unpredictable. Players risk their money with the hope of multiplying their bets or hitting the jackpot.

Why does RTP matter?

For online casinos, having a higher slot RTP attracts many players to their site. Players always look for high RTP slots as they pay more. This case mostly applies to slot players who play for a living or other players who play frequently.

For other slots fans who play for a short period or just for fun, RTP knowledge might not be that important. Overall, games with high RTP are most preferred.

So, what is considered high RTP slots?

Some people say that slots with an RTP figure above 98% are considered high. However, slot games with an RTP of 97% still pay well and are also considered high. Average RTP games should range between 94%-96.99%, while the low RTP games are below 94%.

If you find RTP slots below 95%, you should give it a better thought before staking your money. While others may claim that high RTP slots are rare, this is not true. There are several slots and table games that offer RTP above 97% in various casino listings. We will explain these slots and their wagering requirements later on in this article.

Between online casinos and land-based casinos, which one has better RTP?

Most players who have played online casinos’ slots and land-based casinos’ slots claim that the online slots have better RTP. This claim is valid. Although the slots may be the same, online slots offer relatively higher Return to Player percentage than land-based casinos.

Most land-based casino games have RTP that ranges between 70% and 90%. These slots figures are considered very low when it comes to online games. On average, most online slot machines have RTP ranging from 95%-97%. Others go to the extent of reaching above 99%.

But why do land-based casinos have low RTP slots?

This is because they are limited in space. Therefore, they will have to make more money from the house edge to pay for their venues, maintain the casino building and physical machine, pay for their working staff, and make a profit.

On the other hand, online casinos have many slot machines available online for betting, going from hundreds to thousands. They do not have any physical restrictions or expenses from the physical buildings; hence their slot machines have a high Return to the Player payout percentage and low house edges. This information can be found on their website.

That is why online casino slot games are more preferred than their counterparts due to their low house edge. But the latter casinos still have their advantages as you can get a 100 bonus slot.

Top 10 slots games with highest RTP

If you have been looking to find the best slots with the highest Return to Player value, this is the right article. These casinos’ online slots have smaller amounts of house edges, some less than 1%, and that is why they are part of the best or the most popular online slots. They include:

  • Goblin’s Cave slot

Goblin’s Cave is one of the best RTP slots from Playtech game providers. It has three reels, three rows, and three pay lines with up to 99.32% RTP.

The slot RTP percentages gradually change with the number of coins a player decides to play with. The 99.32% slot RTP is achieved when a player bets with five coins on each pay line. Several symbols in the slot include the ‘ruby red wild,’ which is the highest valued symbol, followed closely by golden crowns, golden teapots, ruby, amethyst, emerald rings, and lastly, the goblin embossed golden coin. The latter is the lowest valued symbol.

There are also lantern symbols on their website that can still trigger the casino bonuses, although they do not give their payouts. The slot also has two bonus features. The first bonus feature is always active on every slot spin, while the second bonus feature is triggered when a player gets three lantern symbols of the pay lines.

When you get the second bonus feature, you will be taken to a new slot screen showing 11 chests in which you have to pick one and know your price.

  • Ugga Bugga slot

Let’s take a look at another fascinating 99 RTP slot from Playtech game provider that was released in 2006. It has a slot RTP of 99.07%, comprising of symbols in tropical fruits, bongs galore, tribal masks, and much more.

The slot game has three reels, each included in two groups and ten pay lines. Each reel spins independently. The game has no bonus feature, but the slot players can still aim for the Wild bonus feature. All you need is land a reel full of symbols, giving you an option to hold the symbols and the reels hence increasing your chances of winning.

Just like the Book of Dead slot, the Ugga Bugga slot machines have low volatility but a high Return to Player percentage, which means a player can walk away with a massive amount of money from the bonus funds.

  • Mega Joker slot

The Mega Joker slot was developed by NetEnt game developers and released in 2013. It is one of the top 10, 99 RTP casino slots comprising a classic fruity graphic and progressive jackpots. Its simplicity is often emphasized as a slot player is required to learn the basics. The NetEnt slot has three reels, three rows, and five pay lines, including the fruity symbols with 99% RTP.

A slot player will need ten coins to bet with, depending on the stake level he plays at. If he reaches the Supermeter Reels feature, he can hit the progressive jackpot and get big wins.

  • Ooh Aah Dracula slot

This funny-titled 99 RTP slot game was released in 2015 from Barcrest game provider. It has five reels, three rows, and ten pay lines with an RTP of up to 99%. This slot RTP is achieved when you play five rounds at an increasing bet, which can be 20 or 30 times your initial bet. The base game, however, sits at an average RTP of 96%.

The slot machines have medium volatility with free spins, wild symbols, a pick and click bonus game and a big stake option that can activate five spins, which can give you the highest RTP payout percentage, therefore, increasing your possible wins.

  • Jackpot 6000 slot

Another exciting slot from the NetEnt game provider is the Jackpot 6000. Its features are quite similar to the Mega Joker online slot, where you will have to bet with ten coins and get an excellent strategy to reach a Supermeter feature.

The slot machine can reward up to 600 coins when the two jokers land anywhere on the two reels and expose the mysterious prize. Depending on the casino, this NetEnt slot can give over 50 free spins.

The Jackpot 6000 slot game has 5 reels, 3 rows, and an RTP of up to 98.86%.

  • 1429 Uncharted Seas slot

The 1429 Uncharted Seas slot is one of the oldest online slots from Thunderkick developers, with graphics including the mermaids, scorpions, decorated moon and sun, and much more. It has 5 by 3 reel formation and 25 paylines with features like free spins and expanding wilds.

Although the online slot machines’ features might not be that thrilling, it has a high Return to Player percentage of 98.6%, which means that the deposit bonus is favorable.

  • Blood Suckers slot

This scary vampire-titled slot was developed by NetEnt and released in 2013. It has a slot RTP of 98% with two different bonuses, 5 reels, and 25 pay lines. It also has a Victorian vampire genre with low volatility and a pick and clicks bonus game.

The slot machine has to scatter symbols, free spins, wild symbols, and a fantastic vampire-slaying bonus feature with no jackpots present. If at least three scatter symbols display on any reel, a player will be awarded 10 free spins, which triples your winnings.

The slot ends when you click on one of the three coffins on the screen.

  • Good Girl Bad Girl slot

This is a slot of heaven and hell in which you have to choose either the Good Girl or the Bad Girl path. It was developed by BetSoft and released in February 2014. It may require a high internet connection due to its heavy-loading graphics and 3D videos.

The casino slot machine has 5 reels, 25 pay lines, and an RTP of 97.79% with bonus rounds, including the Wilds, Scatters, Click Me, and free spins. The Good Girl has regular small wins, which you can get when you play with her, while the Bad Girl has larger few wins.

You can also double your lines to pay with both sides.

  • Kings of Chicago 97 slot

NetEnt developed this poker-themed slot. Just as the title suggests, the slot reflects the past times when the gangsters ran the Chicago streets. It has an RTP of 97.8%, where the symbols are replaced with cards. Some of the highly-paying slot symbols include the Natural Royal Flush, Five of a Kind, Royal Flush and Straight Flush, and many more.

The Kings of Chicago casino slot does not have any progressive jackpot, but the high RTP can still increase your slot payout percentages. It also has wild symbols, free spins, and a single Joker, which can multiply your casino bets.

  • Most table games

It’s evident that this is not part of online casino slots. However, these casino games also have an RTP payout percentage. In fact, the number of table games with high RTP value is even higher than the number of online casino slots with high RTP and 100 bonus features.

Some of the best and most popular casino table games with high RTP percentage include :

Premium Blackjack- RTP is 99.58%

Live Baccarat- RTP is 98.94%

French Roulette- RTP is 98.65%

Craps- RTP is 98.64%

These are just some examples of high-paying table games hosted in various casino listings. . You can also research other table games of your interest to get their RTP values and their payouts. For example, the bitcoin value weekly cashback gives insights about the weekly games’ payouts from betting with bitcoins.


Slots RTP term has been widely used in the gambling world. Knowing the slot term meaning, how it is calculated, and the difference between the term, house edge, and variance can really help when choosing the right casino game for a player. Several slots are available where some of them have been listed above with their wagering requirements. Try researching other slots to have a wide range of slots’ choices. You can also get useful information from the helpful casino guides.

So, next time you think of playing any casino game, check its RTP as your payouts are closely determined by it.