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Which Online Slots Payout The Most?

Which Online Slots Payout The Most?

One reason online slot games tend to be so popular is that they offer a chance to win possible jackpot prizes!

This could be a reason why some players target new online slots that offer a potentially lower house edge. The house edge is usually expressed as a percentage, and it is an average measure of profit that the casino can expect to keep from a specific casino game, or slot, over time. 

For video slots, you can generally figure out the possible house edge of a game by finding its Return to Player percentage (RTP%).

Of course, like any other casino game, slots are random, so there’s always a chance that they may not trigger any payouts at all when playing.

However, the slot game’s RTP and volatility may help you determine which online slots may payout the most. But remember, as they are games of chance, nothing can ever be guaranteed.

Continue reading this King Casino blog post to learn more about how online slots decide who wins, RTPs and payback percentages and how they can indicate slots that have the potential to payout the most.

How Do Online Slots Decide Who Wins?

If you’re an experienced slot player, or even if you’re new to playing online mobile slots, you probably already know that the position and number of specific symbols on the reels determine whether you have won, and how much.

For example, in the popular slot game Legacy of Dead, if you land 5 gold tomb wilds from left to right across a payline, you can win up to 5,000x your wager!

In Dragons ClusterBuster, winning combinations can be formed if you land 5+ matching symbols, either horizontally or vertically, in a cluster on a single spin.

You can learn more about a slot’s possible symbol combinations and potential payouts by reading the game rules and paytable. These can also give you more information on any features the slot offers and how they can be triggered.

However, regardless of which slot game you are playing, every slot outcome is completely random and unpredictable, thanks to the Random Number Generator (RNG).

Random Number Generator (RNG)

A Random Number Generator is a computer algorithm that produces hundreds of thousands of random number sequences, and these determine the unknown outcomes on each spin.

RNGs make every result fair and random, so each spin is independent. They use a complex algorithm to process millions of values on each spin, and the RNG is even working in the background when the slot isn’t being played.

The RNG’s randomly generated number sequences determine the symbols that appear on each reel. Meaning that every result from your spins is unpredictable, and it is ultimately the RNG that randomly produces potentially winning or losing spins.

In licensed and regulated UK casinos, RNGs are thoroughly tested and certified to ensure they are random and unbiased.

Slot Machine Payouts Explained

As explained above, slot machine payouts are random. Winning payouts can occur when you play online slots at King Casino, but nothing is ever guaranteed. Slot enthusiasts typically play because it can be fun and not because they expect to win.

However, some players may only choose to play slot games that offer a certain RTP% or volatility. 


The Return to Player (RTP) percentage is a theoretical measure of how much a slot game may pay out after playing for a long time.

Each game can offer a different RTP rate. Most slot games have an RTP ranging from around 92% to 97%. However, you may find some games that are higher or lower than this.

So, for example, if a certain video slot has a RTP of 93%, this means that, in theory, it may pay back £93 for every £100 wagered.

However, as slots and casino games are random in nature, you may win more than this, less than this, or nothing at all.

The RTP can also help you to determine the house edge. If a game offers a RTP of 93%, then the house edge would be around 7% (100% – 93% = 7%). Remember, the house edge is the advantage the casino has on average for a specific game over a long period of time.


Volatility refers to how often a slot game may trigger wins and the potential payout size. For example, most slots either have high volatility or low volatility.

Highly volatile slots are those where sizable payouts are possible, but they may only occur after playing for a long time. Low volatility slots, on the other hand, can offer potentially smaller payouts more often.

But again, this may not always be the case.

What Are The Best Paying Online Slots?

Since slots are games of chance, we cannot know what the best paying online slots are. Every outcome is random regardless of whether the game has a high RTP or high volatility. That’s because a high RTP doesn’t guarantee better odds. Instead, it can be used as more of a guide to which online slots can offer better chances of potentially winning.

Here are some of the high RTP online slots at King Casino;

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