Best Slots Online Casinos for 2021

Slots online are one of the best ways to enjoy casino websites. With slot machine games, you’ll have the widest variety over all other casino games. In some cases, an online casino offering slots may provide more than 1,000 games on their platform for players to choose from. In this guide, we’ll guide you to the best slots online casinos as well as offer you tons of other helpful details to help you build your knowledge about playing slots online.

If you’re here for a list of the best casino sites offering slots, we’ve got you covered. In the chart below, you’ll find our selections for the best slots casinos online. After a long and detailed search, our team is confident these operations are the best places for playing real money online slots. You can learn about our proprietary selection process in the section which follows if you’d like to understand how we came up with our recommendations below. Be sure to check out each of these slots casino sites to see which of them feels like the best fit for you.

Rank Gambling Site Deposit Bonus Get Started
Las Atlantis
280% Up To $14,000 Visit Site
Wild Casino
250% Up To $5,000 Visit Site
Super Slots
250% Up To $6,000 Visit Site
BetUS Casino
200% Up To $5,000 Visit Site
Bovada Casino
100% Up To $3,000 Visit Site

Understandably, some of you might be looking for more information instead of just a list of suggested slots online casinos. If you’re on the prowl to soak up loads of information about playing slots online, be sure to continue reading below. You’ll find tons of other helpful details packed into this guide. Once you’re ready to check out some of the top online casinos offering slots, just remember to revisit our list of recommendations above.

If you’re looking for a preview of what’s coming in our guide about online casinos offering slots, check out the list below. Here, you’ll find all sections included in the guide. If you’re short on time and you need to skip ahead, click on one of the titles to jump there now. However, be sure to stick around to read everything included in this guide if you’d like to get the most out of it.

About Our Slots Online Casino Selections

Our staff spent a significant amount of time analyzing the best slots online casinos to come up with our list of the top options to use. In this portion of our guide, we’ll walk you through the detailed selection process, which helped us come up with our recommendations above.

Slots Assortment

One of the essential considerations in our search for the best slots casinos online was the assortment of games you’d have access to. Most online casino sites offer slots to some extent. However, not all of them provide a sizeable collection that’s worth your time if you’re looking to play real money online slots regularly. All of the recommended websites at the top of the guide were chosen thanks to their massive lineups of online slot machines.

Safety and Security

One of the most critical portions of our search centered about the safety and security of slots online casinos. As we investigated every operation, we looked into their ability to protect you as a player. If we were not confident in the security and safety measures in place, we removed that casino website from our list of possibilities.

Customer Support

In the slots online casinos space, all operations are not created equal when it comes to customer support. Unfortunately, many slots casino sites out there drop the ball in this area. However, that’s not the case with our suggestions. We’ve tested every one of our recommendations to ensure they meet or exceed our high expectations of customer service.

Banking Methods

From e-wallets to cryptocurrencies, and practically everything in between, each of our recommended slots casinos online has a vast lineup of banking methods at your disposal. It was essential to us that we only suggested operations with tons of options for you to choose from when making deposits and withdrawals from their platform.

Bonuses and Promotions

If you like earning bonus cash and free spins, then you’ll be a huge fan of our recommended online casinos offering slots. We stacked up their bonuses and promotions against the rest of the competition and found each of them with industry-leading offers. If you choose to play online at one of our suggested slots casino sites, you’ll have a ton of chances to earn free spins, cash, and other rewards.


Playing slots online from your smartphone or tablet is one of the most convenient ways to enjoy the game. We checked all of our recommended slots casinos online to ensure each of them provides a mobile-friendly website, so you can play on the go from the palm of your hand.

Ease of Use

One of the things which annoys us most with slots casino sites is whenever one is designed poorly, making it tough to navigate. With that in mind, we evaluated the ease of use for all slots online casinos under consideration to ensure we could navigate every site with little effort.

Reputation and History

Another important factor in our search was the reputation and history of any casino website on our list of considerations. Our team researched every operation to see what they could find about the historical past of each one. Any slots online casinos with a checkered history were removed from our consideration. The casinos we trusted remained.

Before we move on, you should be aware of one final thing about our selection process. None of the slots online casinos listed were able to buy their way onto our list. We only recommend casino websites who earned their spot as opposed to those willing to pay with subpar operations. Here, you’ll always benefit from independent and trustworthy opinions.

Common Types of Slots

One of the great things about playing slots online is you’ll find one of the largest varieties than other casino games. In this section, we’ll discuss some of the most popular types you’ll find on slots casino sites. If you’re new to playing slots in general, be sure to scan these to get an idea of which forms of the game sound most exciting to you.

3-Reel Classic Slots

The first slot machine ever designed was built as a 3-reel machine. To win payouts from the game, you’ll need to match symbols across the top, middle, or bottom lines.

Multi-Reel Slots

While the 3-reel slot machines were the original form of the game, nowadays, there are all sorts of various multi-wheel configurations. It’s not uncommon to find 5-reel, 6-reel, or even 7-reel options. All of these different variations still function the same as the classic version of the game.

Fruit Machines

Slot Machine Fruit
Fruit machines are another common form found at slots online casinos. Popular in the United Kingdom, slot machines look rather similar to standard slot games. However, the key difference with fruit machines is they often require players to interact more with the game than a standard slot machine does. With fruit machines, players can make many different choices during the gameplay which can impact their payouts. This also makes fruit machines an excellent option for players looking to use more strategy when playing real money online slots.

Autoplay Slots

If you’re looking to put your slots action on a bit of autopilot, autoplay slots might be the game for you. When playing slots online, autoplay slots allow the player to select how many spins they’d like to play in a set amount of time. Instead of needing to click a button for each spin, things can be automated. What’s nice about this is it can speed up gameplay. However, just be sure you’re comfortable with the amount of real money which will be risked before you kick off an autoplay slots session.

Progressive Slots

One of the most popular types of slot machines at slots online casinos and in land-based casinos are progressive slots. With this variant of the game, players have the chance to win a massive jackpot that’s associated with the game. In some cases, the prize can be worth tens of thousands to more than one million dollars. Players who play progressive slots online often love the added thrill of the possibility of scoring a massive jackpot while playing the game.

Mega Spin Slots

If you’re bored with playing online slots just one game at a time, then you might want to check out mega spin slots. With this type of online slot machine, players can play more than one slot at a time. We’ve seen mega spin slots with up to six devices included at once. It’s also not uncommon to find sizeable progressive jackpots added.


Built into many online casinos offering slots are multiplier versions of the game. In these games, players will be provided with options which can be used to multiply their winnings by a substantial muliplier. In some cases, it’s possible to earn up to 100x the original payout.

Multi Payline Slots

Another common type found at slots online casinos is a multi-payline slot. Instead of there just being one payline, there are multiple ones available. The number of paylines can vary by game but can include anywhere from three to more than 25. In addition to this, some online slot machines also offer zig-zag paylines, so your symbols don’t have to match in a straight line.

With so many different forms of real money online slots, it’s worth trying out as many as possible to see which of them you enjoy playing. If you’d like to dive into more detail about the types of slots included above or learn about other forms of the game, be sure to check out the link below. Here, you’ll be able to visit our page that’s solely focused on the different forms of slot machine types.

Online Slots Formats

With slots casino sites, you’ll find a number of different formats you can choose from. In this portion of our guide, we’ll walk you through the options you’ll have available for playing slots online. As you learn about these different formats and see samples of each, consider which of these you might want to try out first.

Standard Online Slots

One way you can play at slots casinos online is through the standard form of the game. Also known as video slots, this format uses standard video graphics. We’ve included some images below of what you’ll typically find with this format of the game online. If you’re looking for a format with more exciting graphics as you play the game, be sure to check out the next option we’ll discuss below.

Slots on Laptop

3D Slots

For many folks who play at slots casino sites, 3D slots are a preferred format. These versions of online slot machines use improved high-quality graphics to deliver a much more visually-appealing experience than standard online slots. In many cases, the graphics are so good they appear to be in 3D without the use of 3D glasses. The games themselves still function like all other slots. Be sure to check out the images below to get a feel for the high-quality graphics you can expect when playing 3D slots online.

3D Slots

Mobile Slots

The other way you can play the game online is through mobile slots. Instead of using a desktop or laptop computer, a mobile device such as a tablet or smartphone can be used for playing real money online slots. Luckily, most slots casino sites have adopted mobile-friendly technologies to offer this ability. With mobile slots, things will look just like standard versions of the games. The only main difference is the size of your screen and the added potential convenience of being able to play slots online from the palm of your hand.

Mobile Slots

With three different formats for playing slots online, you’ll have an option to determine which of them is the right fit for your personal preferences. Unfortunately, slots are not offered in a live dealer format like other casino games. However, even without that, it’s fast and convenient to play at slots online casinos.

Other Online Slots Resources

In conjunction with all of the detailed information included in our guide about the best slots online casinos, we also wanted to bring you some additional resources which you may be able to benefit from. Below, you’ll have easy access to some of our highest rates guides which relate to playing online slots. Be sure to review these to see how they can help you increase your knowledge base.

Slots Strategy Guide

Another excellent resource for folks planning to use casino sites is our slots strategy guide. Many individuals don’t have any idea they can strategize when playing slots online. However, that’s definitely not the case. Check out the link below to learn different strategies you can use to get the most out of your slots gaming experience. Also included in our slots strategy guide is a section on common myths about the game. You don’t want to miss these so you can avoid these misconceptions to improve your abilities.

Online Slot Machine Guide

We’ve also developed a guide specific to playing real money online slots. In this guide, we’ll dive into things like the legality of slots online casinos, the different software providers, and more. If you’re planning to use slots online casinos, check out the guide linked below.

Slot Machine Terminology

From A to Z, we’ve got you covered with our slot machine terminology guide. Thanks to it, you’ll never have to wonder what something means as you’re playing slots online. Check this guide out if there’s a specific term you’re curious about or if you’d like to improve your knowledge on slot machine lingo.

Guide to Playing Slots

Finally, we didn’t want to conclude this section without also including a link to our slots hub page. If you’re still thirsty for more information about playing slots online, be sure to visit the page linked below. Here, you’ll have access to all of the guides we’ve ever built about slot machines. No matter your experience level, we promise there’s something here you can benefit from.

Online Slot Casinos FAQ

To help round things out, we also wanted to provide readers with some frequently asked questions. If we’ve not already answered all of your questions, be sure to check out the ones below to see if they can assist you. You can view the answer to any of them by clicking on the question itself.

Are There Advantages to Using Slots Casinos Online?

Based on our experience with playing online slots, we feel there are many advantages over playing slots in a typical brick and mortar casino. One of our favorite things with casino sites is the ability to earn massive potential bonuses. Unlike land-based casinos where it can be hard to come across meaningful rewards, slots online casinos offer substantial promotions and bonuses. In many cases, it’s possible to earn several thousands of dollars when opening and funding your account.

On top of the bonuses and promotions found at slots casinos online, we’re also raving fans of the associated convenience which comes along with them. For many folks around the globe, there’s no quick or easy access to a local brick and mortar casino. Even for those with one close to home, there’s still a commute and gas expense associated with getting there and back. However, with casino websites, you can play real money online slots using a computer, tablet, or smartphone. Sometimes, it’s nice to play games from the comfort of your own home without needing to head out the door.

Are There Strategies for Playing Slots Online?

Yes. While some slots are considered to be pure luck, there are some which can be played strategically. If you’re interested in learning about some of the strategies you can use when playing slots online, be sure to visit the other resources section located directly above this one. There, you’ll find a link to a page we’ve built that’s dedicated to strategies you can use on casino websites offering slots.

Are Your Suggested Slots Online Casinos Safe?

Absolutely. The criteria which mattered the most to us during our investigation related to the safety of our readers. Based on our analysis, we’re sure you’ll be playing online slots at one of the safest options in the industry if you choose any of the best slots casinos online we recommended at the top of this guide.

That said, if you’re considering playing at another casino site offering slots that’s not on our list of recommendations, we’d urge you to be cautious about it. Unfortunately, not all online casinos are trustworthy places to play slots online or other casino games. For this reason, you’ll want to research to ensure you end up using a site which can be trusted. Also, be sure to check out the link below to view our list of casino websites we don’t trust.

Can Slots Be Played Online for Free?

Yes. One of the beautiful things about casino sites is the majority of them allow clients to play online slots for free. This is a tremendous value over land-based casinos where you can’t play any slot games for free.

We see two significant advantages to slots online casinos offering free play. For starters, it’s a great way to try out a new slot machine before you wager real money. In some cases, you might have a collection of over 1,000 slot games on a single casino site. Using a free play option can let you sort out if you enjoy playing a game without risking your real money on it.

In addition to testing out a new game, free play options also offer you the chance to practice new strategies. With some modern slot games, there are different ways you can approach the game. Instead of testing new theories while real money is on the line, you can instead work on perfecting things while it’s free to play.

Is It Legal to Play Slots Online?

Possibly. Depending on the laws for your country, it may be legal for you to play at slots online casinos. Unfortunately, laws pertaining to online gambling vary quite a bit around the globe. However, we’re here to help you sort it out if you’re unsure which rules apply to you. Check out the link below to view our page that’s solely focused on gambling laws. Here, you can find the latest information about your home country.

Wrap Up on Slots Online Casinos

Hopefully, you found our guide about the best slots casinos online helpful. If you were happy with the information you found on this page, we’ve got much more like it to offer you. As you explore our website using the main menu, you’ll find all kinds of gambling-related guides, site reviews, blogs, and more. Thanks to all of the detailed information available on our website, you can easily improve your knowledge and skills on the types of gambling you enjoy. Thanks for stopping by and good luck playing real money online slots!