Best Online Slots for Real Money in 2021

When you’re searching for some easy, mindless fun, you’ll struggle to find anything more entertaining than slot machines. If it weren’t so, they wouldn’t be casinos’ most essential staple. Whichever casino you visit — be it a land-based or an online one — slot machine games are always the strongest in number compared to other casino games. How so? Read the best casino news now!

Free Chip


Free Chip


Free Chip


Free Chip


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The key is in their simplicity. Slot games come with zero learning curve. You pull the lever (or just tap a button these days) and watch the magic happen, with the magic being the spinning of the reels in front of your eyes. Alright, perhaps it’s not magical, but it certainly is flashy and entertaining to the eye. Anyhow, when the reels stop, you get to see whether you’ve won or not — that’s all there is to it. And with the potential reward for playing the machine being money, it’s no surprise the game has gathered such a following. If you opt for the right machine, i.e., play on best online slots for real money, you will be lucky more often and may walk out the casino with your pockets more full than when you walked in.

So if someone opens an account as a first-timer and plays some of the best online slots for real money in 2019, realistically, they have identical odds of winning as someone who’s been playing for ten odd years. But in reality, it’s often the case the latter wins more often. Why’s that? That’s thanks to their knowing how those best online slots for real money work. We’ll share the knowledge on how to pick the machine. But let’s first discuss where you should play.

Should You Play Online?

In short, yes is the answer. The thing is, how does one judge two slot machines apart? Slot game developers determine a machine’s payout frequency by a metric called Return to Player, or simply RTP. If you’re familiar with the term house edge, RTP is just the opposite of that. Essentially, it represents what portion of the money wagered will return to the player in the long term. The key phrase here is “in the long term.”

Casinos measure RTPs over the entire lifespan of a machine. This means that RTPs are true on billions of rounds and not during a single playing session. With an RTP of say, 90%, it doesn’t necessarily mean you’ll win nine times out of ten, nor that you will receive $45 if you chip in with $50. It’s just a metric that showcases a rough idea which machine is less stingy than the other. Basically, as it’s the opposite of the house edge, you’d say for a machine with an RTP of 92% that its house advantage is 8%.

RTPs (which now you know what it is, right?) of slot machines in brick-and-mortar casinos differ from those in online casinos. The truth is, physical machines pay out less often. In general, their RTPs fall between 85–90 percent. Online video slots are much more generous towards the player. In fact, online RTPs usually go from 92–97%. Moreover, some of the best online slots for real money in 2019 even go over that number, with the RTP being 98% or better. Speaking of those…

Best Online Slots for Real Money in 2021

Now that we’ve established that online slots are better for you than brick-and-mortar casinos, there are also other things that give online casinos an edge. Besides the convenience that comes with playing from wherever you are, online software providers have more options to be creative. Since they don’t have physical limitations, online casinos can have thousands of games in their library.

Developers can also be more creative, which allows for slots with six or even seven reels, or even some with floating symbols. Here’s a table with a brief recap of the differences between online slots and those found in land-based casinos:

[supsystic-tables id=1]

A slot machine’s RTP is not its only metric though. You should also consider its volatility. Volatility represents how frequently and how much a game tends to pay out. Low volatility means that winning rounds will pop up more often, but you shouldn’t expect huge prizes. Contrarily, a highly-volatile machine won’t give you much joy often, but when it does, you will receive more money. Ideally, you’d want to combine high volatility with a high RTP. We’ll now give you some examples of the best online slots for real money in the USA.

Online Slots for Money

Best Online Slots for Real Money in the USA

Gamblers who are residents of the United States have somewhat different rules for conducting online gambling. In 2006, the U.S. introduced a gambling act which effectively banned Americans from wagering money online. However, don’t despair yet — that isn’t completely followed through. In reality, many online casinos (and casino software providers) have left the U.S. market, and, therefore, you can’t play there, for real money or otherwise.

However, not all of them went down the same path. You can still find plenty of casinos which provide their services to U.S. players. You just ought to know which ones are good, and we’ll talk about that in a little while. Before that, here’s a list of ten of the best online slots for real money in the USA, together with their RTPs:

  • Cosmic Quest: Mystery Planets — 98.95%
  • Rock on! Slot — 98%
  • Paydirt Slot — 97.5%
  • Cleopatra’s Gold — 97.5%
  • Reel Crime: Art Heist — 97.03%
  • Diamond Dozen — 96.51%
  • Enchanted Garden — 96.38%
  • Watch the Birdie — 96.29%
  • Wheel of Cash — 96.29%
  • Outta This World — 96%

Where to Play

We now know which slots to play, but where should we do it? The number of online casinos is in the thousands. Even with the limitations for the U.S. players, there are still hundreds of websites to choose from. So how do you pick?

Don’t sign up at the first one that pops up. Instead, do a bit of research! There are several review sites for online casinos which will tell you about a certain casino’s ownership and their practices. A major problem with many online casinos is their attitude towards processing withdrawal requests.

Since the internet is a place you can’t easily regulate, there’s a multitude of websites which simply neglect their customers and deny them winnings. Oftentimes, you will stumble upon a casino which is too slow in sending payments. There’s no reason to deal with them as there are plenty of respectable websites. This is why you should check out reviews. To avoid this unneeded mess, read the reviews and find out how many online complaints there are.

Another indicator of a casino’s professionalism is its licensing. Licensing commissions are there to be a supervisor of the casino and make sure they work with transparency and don’t con their players. Of course, there are good and bad regulatory bodies, and you should be on the lookout for this. If you’re playing from the United States, picking a Curaçao-licensed casino over the one with Costa Rica’s or Panama’s license is the right way to go.


With so many different online casinos on offer, they have had to come up with a way to make themselves stand out from the competition. In order to do so, online casinos offer lucrative bonuses which are there to attract new visitors. Most of them have welcome promotions which will give you a 100%+ match on your first deposit. Furthermore, you can also claim no-deposit bonuses, which provide you with the opportunity of making real money without any risk.

Before you claim a bonus, however, you have to go through the terms and conditions those bonuses come with. A wagering requirement (WR) signifies how much money you need to wager before you can ask for a withdrawal. Read the T&Cs to find out which WRs the casino imposes and figure out if it’s worth claiming it.

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Hope this article helped! Here, at, we will come up with similar articles to help you make the best choice when you wish to play some online video slots. Moreover, we will also give out advice on which online casinos offer the best service and on online gambling in general. Did you know, for instance, you can make real money while playing slots for free?

If you’re a newcomer to the world of online casinos (or just someone who’s looking for more insight), stick around and find out what’s the best way to maximize your profits.

Online slots for real money FAQ:

Can you play slots online for real money?

Yes, you can play online slots for real money. There are so many casinos that will offer an additional matching bonus depending on the sum you deposit, and most of them will offer coupons for free spins. 

What online slots payout the most?

Potentially, progressive slots will pay the most. These slots offer players a chance to win the progressive jackpot which can get incredibly high. One of the most appealing things is that this jackpot can randomly occur at the end of each spin.

How do you pick a winning slot machine?

Each slot machine is run by RNG, so there will be no way to determine which slot is the winning one. However, if you see a slot machine with a rather high progressive jackpot, it is safe to assume that there were no winners for quite a long time. Who knows, you might be the next winner.

What is the best online casino for US players?

There are casinos that won’t accept players from the U.S. so it might be the best idea to keep the focus on the ones that will, and that are proven fair. Among the best casinos for the U.S. players are BoVegas, Two-Up, Eclipse, Cherry Gold, Irish Luck, Supernova, Domgame, and others.

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12 thoughts on “Best Online Slots for Real Money in 2021

    1. Unless it is a scam, yes. Not paying players their rewards would seriously damage the reputation of the app, and it would have to be shut down. None of the prominent developers would allow themselves that kind of risk. However, there might be limits to the amount which you could withdraw from the app, and those would be pointed out.

    1. With some casino game apps, you can actually win real money without placing a deposit. However, in most cases, to play for real money, you will have to place some deposit. The good thing is that many of them will also give you a newcomer bonus, which can provide you with longer playtime.

  1. So I didn’t quite get the whole thing about points and gifts cards. Can you explain it again?

    1. In many apps, you will collect some points or tokens, which can then be converted to money prizes. If you do not win a significant reward, the points you’ve earned while participating in the game can then be used to make a purchase in a particular amount in stores that support the app (like Amazon, as we mentioned).

  2. This seems like a way to win money fast. I get that the access is free and all that jazz, but why should I risk even a penny for something that depends entirely on luck?

    1. Well, it all depends on your preferences. If you are not a big fan of the risk, there are other ways to profit while playing games, such as quizzes and trivia games. It all depends on what you find entertaining.

  3. I must show my affection for your kindness for all those that must have help with your concern. Your special dedication to passing the message all-around turned out to be especially valuable and has really made guys like me to get to their ambitions. Your informative advice indicates a great deal a person like me and further more to my mates. Many thanks; from everyone of us.

    1. This is different from app to app, as well as for each game you play. Some of them hold a single game like Lucky Numbers Keno, so you’d have to know that the odds of getting all ten numbers are pretty low. The same goes for slot games, but with many bonuses and free games, you will probably not leave empty-handed.

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