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What to Consider When Choosing the Best Online Slots Sites

There are hundreds, perhaps even thousands of slot sites to choose from, and in this guide, we outline some things you might want to think about when it comes to the best online slots. We also let you know what you need to know so that deciding on a casino site or game is a straight forward choice for you.

What Makes a Top Slot Site?

Several different things contribute to a slot site being recognised as one of the best in their field. With so many to choose from, the slot sites now need to go above and beyond to stand out from the competition, which in turn will only help us customers, who benefit from the improved features that come as a result of this competition.

Online there are hundreds of various slot sites. Many are typical online casino sites or betting websites that released a slot machine section, some are bingo sites that launched slot games, and Slingo online to complement their regular online bingo games.

We have prepared the ranking based on the following website features:

  • The number of slot games
  • How many mobile-friendly slots the site has
  • The number of progressive jackpot games
  • Any welcome offers & bonuses

We have produced a separate bonus page and review article for the latter should you wish to know more details about the welcome offer.

You can join an online casino providing hundreds of the best slot games, leading deposit rewards, massive progressive slot jackpots, and more. What do all the best slot sites have in common?

Many things stand out at all US’s best slot sites. Whether it’s the welcome bonus provided or the performance of their mobile online casino game, slot sites that place you at the core of their offer are the slots you should join.

Mobile Compatability

Each slot listed on this site has a mobile casino app accessible on your mobile devices. One advantage of mobile slot machine sites is that games are handy for players.

If you’re the sort of slot player who likes playing on-the-go slots, the best slot casino sites typically offer a smartphone app. Mobile slots are also used on both Android and iOS and can be downloaded from the relevant app store.

Performing the best online slot games on your mobile phone is an integral part of user experience. Nowadays, if slot sites don’t give you the chance to play on your mobile device, they’re not worth your time. The problem is whether you want a web platform or a dedicated mobile device. The best slot sites also require their players to download their mobile apps to play on-the-go slot games.

Mobile slots are 100% ready for all smart devices, i.e. mobile phones and tablets. Play slot games wherever you want, whenever you want.

Great Payment System

To so many players, making safe online payments is one of the most significant areas of concern when playing online slots. Choosing payment methods that suite you best is so important; that’s why we suggest online slots that offer players the best range of safe banking options.

Payment methods have become even more relevant as the government has implemented new legislation banning US online gaming platforms from accepting credit card payments (debit cards and wire transfer are still permitted).

Most of the best slot sites featured support PayPal and Paysafe Card, or require Pay By Phone, so any deposit you make to your online casino account is added to your monthly mobile phone bill or if you or on a prepaid plan the amount is deducted from that.

Progressive Jackpots

Many online casinos have progressive jackpot slots to play. Others have tiny prizes, dropping their jackpots weekly or even hourly.

Others have multi-million dollar prizes that seldom payout, but are record jackpots when they do.

Loyalty Program

Every online casino on the planet offers incentives, and why not? Of all, what player wouldn’t want a major bonus?

From welcome bonuses to reload bonuses to free slot spins. We imagine a bottomless pit of deals when assessing a platform. Some of the most critical items we try the casino loyalty system.

If you’re playing your hard-earned money, why not earn more?

We have listed above loyalty programmes. Playing online slots is also the best way to reward loyalty. Fast gameplay allows quick points accumulation.

These bonuses come in all manner of different shapes and sizes, from free bonus funds to earning a percentage of your losses back. Slot sites are always looking to reward customer loyalty but make sure you read the terms and conditions before signing up.

User Experience

With online casinos and slot slots you are spoilt for choice there are hundreds if not thousands of various slot sites. Many are traditional online casino sites or sportsbooks that launched a video slots section; others are bingo sites that started slot games to supplement their existing online bingo offerings.

One of the essential things we consider when recommending great slot sites is the user experience and making sure as you move from one area of the site to another, the look and feel is consistent.

Having one account to login to all areas of the site is essential and being able to use the same bankroll across different game types is a crucial part of an online gambling site.

Game Developer

The online gaming industry continues to expand, grow and develop, and several companies are developing cutting-edge applications. With online slots, there are quite a few companies out there. Nevertheless, for this analysis, we will only look in-depth at the most famous ones.

They are the top gaming app developers, and they have consistently stood the test of time and proved their worth. However, they are undergoing continuous changes to enhance the operation. The table below lists the most prominent app developers, along with their most popular slots.

Each software developer has a rich slot collection and is actively creating new and challenging games. However, the software developers we recommend are not only well-established in the industry, but also secure and accredited.

Note, however, that the betting limits of each slot can differ depending on the online casino you’re playing at. Need to learn more about app developers? Additionally, you can read each developer’s summary by clicking on their logo in the table above.

You will usually be able to tell what sort of level the games on the site are at by the providers. Recognised names such as NetEnt, Evolution Gaming, and Play’n Go will all guarantee you have fun playing.


Playtech is one of the biggest software providers in the industry if you spend a bit of time on a casino or bingo site and you will quickly see a lot of games made by Playtech.

They were one of the first game developers way back in 1999 and have kept making slots hit after slots hit. Some of Playtechs great slots titles include Age Of Gods, Beach Life & The Dark Knight Rises.

Customer Support

Customer support is something we strongly consider when recommending the best slot sites. Mainly because if there is an issue with the casino site or slot game you are playing, you can get the help you need.

All of the best slot sites featured on this page have a proven track record when it comes to customer support and providing excellent customer service.

Safety & Security

You can be confident that all of our selected best slot sites are free to play and approved by official authorities such as the United States Gambling Commission or the Malta Gaming Authority who are widely respected.

Additionally, all of our listed slot sites have SSL security certificates. They are regularly audited by organisations such as eCogra to ensure your game is fair, and your private data is securely stored.

Please notice that all the above operators are authorised and regulated by the US Gaming Commission, a sure sign that the online gambling website is safe and secure.


Another critical factor in deciding whether or not we approve an online casino is getting transparent and open gambling policy in place. For example, our featured sites allow you to set limits on your deposits (either daily, weekly or monthly) or to voluntarily lock yourself out of your account for a specified period.

The gameplay at most of these casinos is audit and monitored by a third party like eGOCRA or iBAS. Their job is to ensure that the Random Number Generator that is used in the casino isn’t rigged and that the RTP is working as expected.

Why Choose Slots?

If you have never played at an online casino before, slot games should be your first port of call for several reasons. The first is due to the simplicity of slot games, with players able to spin their reels at the single click of a button.

There are plenty of different slot machines out there for you to choose from and if you use one of the slot sites mentioned above you can take advantage of the bonuses, so it’s a fantastic way to try them out to make sure the casino fits your specific taste.

The main benefit of this comes from then being able to see for yourself which slot games you like and which ones you don’t all without having to gamble and play with all your own money. Then comes the fun element, which is high on the list of why so many players prefer slots to other games.

Slots can provide players with hours of entertainment and can be the most rewarding of games if things go your way, with there being some huge jackpot prizes out there for players to try and win. If you don’t buy a ticket, you’ll never win the raffle, right?

Frequently Asked Questions

What is the best online slot site?

The very best casino sites are those that offer substantial welcome offers to new customers & players. Just be sure to read over the minimum deposit requirement as well as the max bonus amount.

What Slot Games Can I Play at the Best Sites?

The very best slots give a wide variety of slot machine games. They can be divided into three types: video slots, classic slots, progressive jackpot slots.

The video slot we talk about the most as it’s the most popular with online casino sites. When you hear about the best slots online, we usually refer to them.

Some games have animated reels, fun bonus rounds, and multiple paylines. You will find 1024 paylines spaces, loads of great game slots to enjoy.

Is there a better time to play online slots?

The best time to play online slots is when it suits you best. The theoretical RTP of a slot game is not affected by the time of day, whether you play at morning, noon, or night, the chances of winning are just the same.

Are there Higher jackpots at the Best Slots Sites?

The jackpots aren’t just massive; they are sometimes astronomically high! The largest jackpots are found in the progressive slot games, the two largest being Mega Moolah and Mega Fortune. The reason these jackpots get so big is simple: as more and more people play them, prizes keep increasing.

The money pool expands before one lucky player hits the jackpot. All progressive slots will have a counter displaying the current jackpot sum so you can pick one with the highest jackpot.

How Are The Best Slot Sites Decided?

We’ve spent what feels like forever hunting for the best US slot sites. Our specialist team spends all their time combing through all kinds of so-called best slots online.

We study each one carefully, weeding out the good from the poor to make sure it’s great for US players before we suggest it. We follow a list of guidelines when we determine whether a casino belongs to the best places.

Are The Best Slot Games Available To Play At US Slot Sites?

The best US slot sites deliver some brilliant slot games. If you’re based in the US, you’re in the lucky place that you can play any big slot game.