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Online slots allow gamblers to wager on the outcome of spinning a set of reels with a collection of symbols. Slots are the most popular casino game in the United States, accounting for the majority of all real money games played at casinos.

Real Money slots online spin reels full of symbols and payout depending on the combination of symbols that are spun. Find the top US online casinos to play some of the best slot games around.



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$4,000 Bonus

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$10,000 Bonus 98% Payout - Rating: 4.6/5

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$3,000 98% Payout - Rating: 4.6/5

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Best Online Slot Games

Slot games have evolved dramatically since their first inception in 1895 by American creator Charles Fey. Read on below to discover all you need to know about the best USA online slots in 2022. We’ll help guide you to the best slots around and make sure you have a good time.

What are the most popular slots? We’ll help you find out. You can even play slots for free, but first, you might want to read our quick slot reviews to find out which is best!  Play for the best online slots real money USA at our recommended casinos below!


helpful hints for online slots

There is no guarantee of winning with USA slots online real money and players need to keep this in mind. The house has a significant house edge in online and offline slot games. There are, however, a few ways you can play smart against. Read on to see how you can improve your game with Casino US’ helpful slot tips and tricks.

  • Find the Slot Game Online that suits your bankroll. This is an integral part of the smart play process. It is no good for you to choose a slot game with high coin values if you are playing with a small bankroll, to begin with.
  • Decide on a winning limit before engaging in a game. This may sound ridiculous as no one ever wants to cap themselves when on a roll; however, this is a vital part of playing smart. If you set yourself a winning limit beforehand and walk away once you reach it, you will not stand the chance of losing all your winnings.
  • Choose a slot that suits your needs. You need to keep in mind both your bankroll and your entertainment expectations when playing a slot. The best way to find a slot online with little cost to you is to give the free online slots a spin before wagering.
  • Decide on a loss limit before playing. This is incredibly important. Be sure that you set yourself a loss limit of how many times you are prepared to lose at consecutive spins before you throw in the towel. Stick to this limit.

You might also want to read our step-by-step guide on how to play online slots.

Top 10 Slot Casinos

Online slots are the most popular casino games around, so it comes as no surprise that all online gambling sites have plenty of slots on offer to attract players. But how do the best slot casinos around? Our team at Casino US has put together a list of the top ten slot sites, looking at the number of slots available, the bonuses, and more. Signing up at any of these casino sites will ensure the best possible slot experience anywhere on the internet.

1 – Café Casino

Café Casino has one of the largest collections of slot games around. There are over 200 unique slot games on offer, including numerous progressive jackpot slots. Couple this with a great $5000 welcome bonus offer and fantastic customer support, and you have one of the best slot casinos around.

  • Number of Slots: 200+
  • Bonus: $5000
  • Progressive Jackpots: Yes

2 – Crypto Reels Casino

Crypto Reels is an excellent choice for players looking for one of the best slots casinos around. It has over 150 different slot machines available, as well as plenty of bonuses and promotions for slot players. There’s also a good selection of progressive jackpot slots available. What more could you ask for?

  • Number of Slots: 150+
  • Bonus: $4500
  • Progressive Jackpots: Yes

3 – Sun Palace Casino

Sun Palace is a natural choice as one of the top 10 slot casinos around. It offers a massive welcome bonus package. There’s also a great selection of different slot games available, including three and five-reel slots, as well as some progressive jackpot games.

  • Number of Slots: 150+
  • Bonus: $10 000
  • Progressive Jackpots: Yes

4– BoVegas Casino

BoVegas constantly ranks up at the top of our list for top casino sites. For slot players, it doesn’t get much better than this. There are over 150 slot games on offer, including both three and five-reel games, as well as progressive jackpot slot games. Add to this an impressive welcome bonus and other promotional offers; it’s easy to see why we recommend this casino site.

  • Number of Slots: 150+
  • Bonus: $6000
  • Progressive Jackpots: Yes

5 – Las Vegas USA Casino

If you’re looking for one of the best slot casinos around, look no further than Las Vegas USA Casino. New players can enjoy over 150 slot games with their welcome bonus, up to $5000. There is an excellent selection of different slot games on offer, including several with a progressive jackpot. Add other amazing promotional offers and excellent support to the equation, and you’ve got yourself a winner.

  • Number of Slots: 150+
  • Bonus: $5000
  • Progressive Jackpots: Yes

6 – All Star Slots

With a name like All Star Slots, does it come as any surprise that it would feature on our list of top ten slot casinos? The casino offers a great welcome bonus package up to $4000 and a great selection of around 150 different slot games, including some progressive jackpot slots. This casino is definitely worth checking out if you’re looking for a great slot casino.

  • Number of Slots: 150+
  • Bonus: $4000
  • Progressive Jackpots: Yes

7 – Slots of Vegas

Slots of Vegas is another slot-focused casino that deserves its place on our list. With over 120 slots available, it’s a good choice for gamblers. The only thing that puts it a bit further down the list is the slightly smaller number of slots available, as well as a slightly smaller welcome bonus. Still, it is an excellent choice for a gambler looking for a casino to cater to their need for slots.

  • Number of Slots: 120+
  • Bonus: $4000
  • Progressive Jackpots: Yes

8 – Red Dog Casino

Red Dog has an impressive slot game list, with over 150 different slot machines to enjoy online. The list includes three-reel and five-reel slots, as well as progressive jackpot slots. The casino has a decent welcome bonus and also accepts Bitcoin. We really enjoyed our time with Red Dog Casino and highly recommend signing up.

  • Number of Slots: 160+
  • Bonus: $2250
  • Progressive Jackpots: Yes

9 – Irish luck Casino

Irish Luck Casino is a fantastic choice for all gamblers, and the same is true for players looking for top slot games. There are around 150 different slot games on offer, including progressive jackpot titles. The casino offers a competitive $3000 welcome bonus for new players, as well as good banking options and customer support.

  • Number of Slots: 150+
  • Bonus: $3000
  • Progressive Jackpots: Yes

10 – Old Havana Casino

Rounding out our top 10 list of the best slot casinos in Old Havana Casino. This is still an excellent choice for players looking for a top slot casino. With over 140 unique slot games, including three and five-reel slot games, the casino is a great choice. It also comes with a $3000 welcome bonus, good customer support, and a decent selection of banking options.

  • Number of Slots: 140+
  • Bonus: $3000
  • Progressive Jackpots: Yes


Naturally, over time, a number of variations of the slot machine have surfaced through the ages. There are two main types of slots available to USA gamblers:

  • Progressive jackpot slots
  • Non-progressive jackpot slots

While both slots run in basically the same fashion; there is one major difference separating the two, whether or not the jackpot grows or is set. A progressive jackpot slot means that every time a player wagers on that particular online slot title, part of their bet will be put towards the jackpot. Hence, the more people play that game, the larger the jackpot will become, thus making it progress. The odds of winning the jackpot are similar to the odds of winning the lottery.

Non-progressive slots have a set jackpot for players to win. This means that no matter how much money is pumped into that slot machine, if the jackpot is six thousand coins, you will be winning six thousand coins and no more. Non-progressive slots typically offer better odds for winning the jackpot. Either way, it’s always great to play slots and win money!

While more alluring due to the larger winnings, progressive jackpots can be trickier to land large wins on, often requiring American players to wager the maximum bet in order to qualify for the progressive jackpot. Other variations of slots are based on the reels available for play.

Online Slots Casinos USA


There are several different popular types of online slots for players to enjoy. Below we have a short break down on each type of internet slot game to help our readers decide which type of slot game they want to play.


Three-reel slots are your classic slot games that have a limited number of symbols and paylines. These are the simplest slots you can play. They also tend to have the smallest jackpots but are the ones that payout the most often.


Five-Reel Slots: These are your modern slot games. These are typically far more complex, offering players bonuses like free spin, wild symbols, scatter symbols, more paylines, and more ways to win. If you plan on playing online slots that pay real money, these are the games that will have the widest variety at casino sites.


These are basically the same as five-reel slot machines, just with extra reels and winning combinations. They will also offer plenty of bonus game modes and special features. However, players will likely find it very difficult to find these as not many slot casinos offer them.


If you’re looking to get rich from a slot jackpot, progressive jackpot slots are the best slots to play. These can be three or five-reel slots, but what makes them unique is the jackpot. Instead of the jackpot being fixed, several games are linked together.

Every time a bet is placed, a portion of the bet goes towards the jackpot. This means that the jackpot continues to grow over time until someone wins the jackpot. Some progressive slots can have hundreds or thousands of slots linked together, creating $1 million plus jackpots.


One of the best things about the top online slots is that they’re easy to play. This means that nearly any player can start playing and have some fun with the best online slots in the USA. The rules are easy to understand, and a player’s luck is the biggest factor in whether they win or not.

This has helped make online video slot games extremely popular. The best thing about American slots online is that there are so many different variations for players to try.

Slot machine with chips

These include simple three-reel video slots with one payline, to five-reel slots with 25 or more paylines. There are also more complicated slot machines, which include wild symbols, bonus games and this makes them very entertaining and exciting to play. Choosing a slot casino is also very important, so make sure you pick a reputable gambling site. Try finding casinos with the highest slot payouts.

Once a player from the United States has chosen the best online slots real money they’d like to play; the rules are relatively straightforward. All a player needs to do is make sure they have an Internet-connected device. This can be their computer or laptop, smartphone or tablet.


  1. American players will begin by placing their bets on the game. There is usually quite a bit of customization here as players can change the coin size and how many coins a player wants to bet on each payline.
  2. We always recommend placing bets that fit with the player’s bankroll. It doesn’t make sense to place $10 bets if you only have $30 to play with, as the player will exhaust their funds too quickly.
  3. Press the Spin button when the player is happy with their bet. When the reels are spinning, the player can do nothing but wait and see.
  4. After the reels have stopped spinning, the player is told if they won anything on that spin. Winnings are credited to their account if they won. If they didn’t, they could spin again.
  5. Finally, many of the best online slots have unique bonus games. If you’re lucky, you’ll land the right symbols on the reels to enter the bonus game. Many top slots will have fabulous prizes in the bonus rounds, so they are worth keeping an eye out for.


Whether we’re talking about slot machines in land-based casinos or online video slots, players are always asking what the odds of winning are. The truth is that this is rather difficult to work out these days as the games themselves have become far more complicated.

In addition to this, the type of online casino slots you’re playing also make a difference. Typically players will find they have a better chance of winning when they play a fixed jackpot slot, compared to a progressive jackpot slot game. In addition, in order to win the jackpot on a progressive slot, players will typically have to hit the bet max button to be eligible.

However, don’t let anyone ever tell you it’s impossible to win while playing a slot game online. It is true that the house has an edge, larger than you’d find at a table game, so that you will lose money in the long-run, but that doesn’t mean you can’t strike it lucky with a single spin of the reels.

There are several gambling experts who say that a large jackpot win from a casino slot game is about as common winning the jackpot in the lottery. So, it’s definitely not impossible to win a life-changing prize.


Image of laptop with green buttonKnowing the terms surrounding the casino game you play is essential for all online gamblers. Thus, Casino US has comprised a need to know glossary for all newbies to the world of top slots online USA:

  • Coin Size – This relates to the number of casino credits the player wishes each coin to be worth.
  • Expanding Wild – An expanding Wild is a Wild symbol that has the unique ability to expand and take over an entire reel. This can lead to some huge wins.
  • Loose Slots – Loose Slots are machines that supposedly pay out more often than other machines of the same title. They are also expected to yield big payouts soon.
  • Reels – Reels refer to the columns of symbols which display on your screen within the game.
  • RNG – RNG is an acronym used for Random Number Generator. An RNG is used to produce a series of random numbers.
  • RTP – RTP or return to player is the amount of a wager returned to the players over time. It is expressed in a percentile.
  • Scatter – A Scatter Symbol is a symbol found in slot machines that unlock various bonus features. These could be free spins or bonus rounds depending on what is provided by the game.
  • Tight Slots – A slot that doesn’t pay out often is called a tight slot.
  • Video Slots – A video slot machine is a type of fruit machine which has no physical reel within it. A virtual generator creates everything on the screen.
  • Wild – A wild symbol is basically the Joker of slot symbols. When appearing on your screen, this symbol can stand in for any other symbol except for the scatter or bonus symbols of the game.


A no deposit bonus is one of the most sought-after casino bonuses in the USA. No deposit bonuses often offer free spins to new players, instead of casino credits. All a player needs to do is sign up and start an account at top American online casino gambling sites that offers a no deposit bonus, and their new account will be credited with free spins. The players do not need to make any deposits into their account in order to receive this reward, hence the appeal.


Within the real money casino game world, you will given the opportunity to play free slots online. Free slots USA play gives you an opportunity to play the available titles with fake money, to test the best real money slots before committing your actual bankroll. Playing free online slot games is a great way to get a feel for the best online video slots before risking your bank balance.

Real Money Slots USA refers to slots in which you are wagering money from your casino account while playing. These allow you to win real money with your wagers.

However, they also pose the possibility of losing it as well. So, why should you play free games? Below are a few advantages of doing so.


  • Your bankroll will not be at risk
  • You get to experience what the game has to offer before buying into it
  • You can have fun at no cost


  • You cannot cash out the winnings made during your game
  • Landing big wins that aren’t real is frustrating.
  • Losing the adrenaline of playing online slots for money.


There are a lot of casino gaming software providers out there. However, there are a few that stand out. Here are some of the top casino game providers for 2022, supplying the best online slot casinos in America:

RealTime Gaming
online slots developer realtime gaming logo

Cleopatra’s Gold

Diamond Dozen

Texan Tycoon

Online slots developer Novamatic logo

American Diner

Always Hot


online slots developer microgaming logo


Jurassic Park

Mega Moolah Progressive Jackpot

Online slots developer thunderkick logo

Birds on a wire



Net Entertainment
Online slots developer NetEnt Logo


Spiñata Grande

Gonzo’s Quest

Play ‘n Go
Online slots developer PlaynGo logo

Aztec Princess

Book of the Dead

Wizard of Gems


Playtech developer logo

Ace Ventura


X-Men 50 Lines


Image of colourful FAQ blocks


As previously mentioned, the first slot machine was invented in 1895. American, Charles Fey created the Liberty Bell and offered players three reels of pure fun and entertainment. It was like nothing players had ever seen before, which is no doubt what made the first slot game so exciting. The Liberty Bell used five symbols, which where:

  1. Horseshoes
  2. Diamonds
  3. Spades
  4. Hearts
  5. The Liberty Bell
Slot Machine history

Liberty Belly quickly grew in popularity through America. In 1908, fruit machines could be found in most places from your local barbershop to the nearest brothel.

In 1963, the first fully functional electro-mechanical slot game was produced by Bally software providers – who are still in operation today. This slot went by the name of Money Honey. Money Honey was the first slot machine able to automatically produce winnings of up to five hundred coins without the assistance of a dealer.


The eighties was a significant year in the development of slot machines as this saw the first video slots come into play. This opened the doors of possibility in more ways than one. First and foremost, this saw slots being able to utilize graphics to enhance the appeal to players.

The visually stimulating world of video slots began to entice more and more gamblers due to its aesthetical charm. Next – and probably the biggest development of USA slots to date – the video slot game also introduced the five-reel game to players. This gave gamblers more paylines to play from meaning, in layman’s terms, more ways to win.

1994 marks the year of slot games venturing into the cyber world. People who now had Internet access could play slots online at the best online slots casinos.  The first online slot games were produced around this time and since then have been progressing steadily since.

The most recent development in the online slot world was when slots breached the gap between desktop to mobile casinos. There are now thousands of titles to choose from provided by numerous online gambling software providers with bigger, better games being produced by the day.