Slot Games Available on Independent Gambling Sites

The online slot sites in the UK are constantly expanding, and one of the main attractions are the slots that allow fans to immerse themselves in the virtual world among the most popular and sought after. With a wide range of options that often exceed the thousands of slot machines available, the opportunity to experience the thrill of the game is always just a click away.

Online slots such as Book of Ra, Fortunium and Immortal Romance represent some of the historical titles that have left their mark on the slot machine universe. The good news is that you can relive the excitement of classic slots, thanks to specialized platforms and sites, including some of the best non GamStop casinos on the market.

Playing with online slots is perfectly legal, the player in fact does not break any legal norms. However, you have to be careful because Casinos on GamStop and slots sites are not always safe: it can happen, even if it is now quite rare, that it ends up on sites that use slot machines only as a cover to steal users’ personal data, such as email and password.

That’s why it is increasingly necessary to draw up real guides like this, which are able to direct players or potentials to some online casinos of undoubted security and reliability.

Online Slots That Pay the Most at Non GamStop Casinos: What They Are & Where to Play?

The online slots that pay the most, or with high RTP, are the ones that ideally ensure the most chances of winning: let’s find out together – from classics to newer titles – and where to play at UK bookies not linked to GamStop.

Finest Online Slots for 2025

One of the first things to remember is to choose slots with a payout rate (RTP) of more than 94% and avoid those below this percentage in order to have a higher probability of large long-term winnings.

Some non GamStop casinos, with slots that pay more, also offer the possibility to take advantage of no deposit registration bonuses to be able to try them for free. Read the details on our dedicated page.

Finest Online Slots That Pay More: Top 10 & Details

Let’s see in detail the best 10 slots with high RTP (Return to Player), selected by the editorial staff of Reliable according to criteria such as playability, unique functions, free spins and, of course, RTP.

Below we show the main features, the payout and the best online casinos to play.

1.        Book of 99 (RTP: 99.00%)

Book of 99 is one of the most pay online slots in the non GamStop casino because it has a 99% RTP as its name suggests. The title presents the classic structure 5 3, with 10 always active payment lines.

The game, developed by Relax Gaming, belongs to the famous strand of the “Book of” and is set in Ancient Greece, with symbols inspired by mythology. To be mentioned, in particular, the Jolly symbol: when they appear at least 3 on the grid, the Free Spin function is activated with 10 free spins and a special expandable symbol is randomly selected, which can assign extra winnings. There is also the interesting function of symbol collecting, in which the counter on the left advances every time a Jolly symbol appears on the screen. At 99 symbols, Free Spins are activated.

●        Provider: Relax Gaming

●        Jackpot: no

●        Bonus function: yes

●        Volatility: high

●        Payout: 99%

2.        1429 Uncharted Seas (RTP: 98.60%)

Among the slots that pay the most stands out 1429 Uncharted Seas, distributed by Thunderkick. This game, set in the dangerous seas populated by mystical and often threatening creatures, features 5 reels and 25 fixed paylines. To win you will have to try to align 3 or more symbols, from left to right.

There is also an Expanding Wild symbol, which expands vertically and can replace all other symbols except the bonus. This is represented by a sailors’ sailors, appears on reels 2, 3 and 4, and expands only if it appears in a winning payment line. Among the symbols that activate the bonus functions we find a twenty rose with a crown in the center. By winning 3 or more you can win free spins, up to a maximum of 50.

●        Provider: Thunderkick

●        Jackpot: no

●        Bonus function: yes

●        Volatility: low

●        Payout: 98.60%

3.        Blood Suckers (RTP 98.00%)

Blood Suckers is one of the best-known and most beloved slots of NetEnt, the theme of vampires. This slot consists of 5 reels and has 25 paylines. A winning combination is formed by aligning 3 identical symbols in at least 3 adjacent reels.

The bonus function is activated thanks to the special symbols inspired by the world of vampires: garlic, wooden stakes, crosses and more. The Wild symbol is represented by the vampire intent on sucking the blood, while the vampire bride is the scatter symbol. Three or more of these symbols, in any position, activate the free spin-up mode. The bonus symbol is represented by the wooden stake.

Blood Suckers is one of the slots that pay the most. The operator also offers an attractive casino bonus to all new members.

●        Provider: NetEnt

●        Jackpot: no

●        Bonus function: yes

●        Volatility: low

●        Payout: 98.00%

4.        King of Egypt (RTP: 98.00%)

This ancient Egyptian-themed slot is composed of 15 symbols, divided into 3 rows of 5 symbols each. To get a win you need to align the symbols from left to right, on one or more paylines. Exceptions are special symbols: the Wild symbol of the Pharaoh, the x2 multiplier and the priesthood bonus symbols, Free Spins and Coin.

Only the highest win will be paid on a payout on a payout, while simultaneous winnings on different lines will be cumulative.

●        A for a Dos Provider: PlayOnline

●        Jackpot: no

●        Bonus function: yes

●        Volatility: high

●        Payout: 98.00%

Conclusion

In conclusion, it can be useful to quickly summarize what has been said in the course of this article about online slot sites. These are online platforms on which users can play with thousands of slots with all the comforts of their own home.

Just like real slots, online slots sites are also based on fundamental concepts such as the Random Number Generator (RNG) and the Return to Player (RTP). These are two key features for the correct and fair functioning of online slots.

RNG is the central algorithm that randomly determines the results of slots and various casino games, ensuring that these happen in a fair and transparent way. RTP, on the other hand, is an essential parameter for understanding how profitable a certain slot can be. The higher the RTP, the more money will be on average to the player.