Read more about US online slots
On this page, you'll find our slots guide and all the basic information you need to know about slots online.
Best online slots USA
Bojoko helps you discover the best slots and learn everything there is to slots online. Online slots are the modern version of slot machines you've seen at brick-and-mortar casinos. They range from classic fruit machines to the latest video slots and jackpot games.
We'll show you what to look for in a slot and what aspects are important to players. With our help, you are sure to find the best slot for you. Here we'll focus on what really matters; what and where are the best slots out there?
Find the biggest selection of best online slots
The number of online slots offered at the US casinos has climbed steadily, but there are still huge differences in the total number of games.
Browse our list of casinos with the biggest selection of online slots in the US:
Bojoko helps you find online slotS for US players
Many USA players love to play online casino slots for real money. Although there are different types available, they all share the same basic idea: you play online slots with real cash for the chance to win some more.
It's not easy to pick the perfect game by trial and error. On Bojoko, you can learn about the basic functions and features, how volatility affects the payout rates, and much more. With the basics covered, you'll be well-prepared to compare and choose the best slots for you.
The list above introduces the best casinos where you can play the slots. The casino reviews help you to get more perspective on if a casino or a slot is right for you.
Top 10 online slots
Itchy to play the best slots US online casinos have on offer? Try these ones!
Gonzo's Quest is nowadays seen as one of the cornerstones of modern-day online slots. It tells the tale of Gonzo, the great treasure hunter who wants to find El Dorado, the mythical city with roads paved with gold.
The slot itself is very straightforward. It has five reels, three rows, and 20 paylines from left to right. The game has a special feature called the Avalanche, which drops new symbols to the reels once the winning symbols have paid out and exploded out of sight. You'll also notice that each Avalanche advances the winning multiplier presented near the reels.
Once you manage to get at least three golden symbols to the same payline on reels 1, 2, and 3, you unlock 10 Free Fall spins. During the Free Fall spins, the winnings might get up to a 15x multiplier!
Bonanza was one of the first slots to have up to 117,649 paylines, thanks to the trademarked Megaways feature. Set in the heydays of gold mining, Bonanza is filled with precious gems and exploding Wilds.
The base game holds 6 reels and a horizontal "bonus reel" on top of the reels 2,3,4, and 5. Each regular reel can hold 2-7 symbols, plus one extra symbol for the reels under the bonus reel. The number of symbols on the reels is randomly picked every time you hit the spin button, so the paylines can be anything between 64 and 117,649. Bonanza also has the Cascading wins feature which replaces winning symbols with new ones.
You can trigger the Free Spins by collecting four or more golden Scatters on the reels. Four Scatters spell GOLD, and any additional Scatters will give you extra spins. The basic Free Spins start with 12 spins and during this feature, every win will increase your winning multiplier. The multiplier doesn't reset and doesn't have a cap.
Watch out for the enraged buffalos in this action-packed slot from Playtech! In Buffalo Blitz, you find yourself wandering on the grassy plains. The background music is soothing, but there are signs of a storm brewing. The thick, dark clouds have already gathered in the sky and there's electricity in the air.
This 6-reel and 4-row game feature 4,096 paylines, and a chance of winning up to 100 Free Spins. Landing three Scatters triggers 8 Free Spins, and landing 6 Scatters starts the feature with 100 Free Spins. You may win more Free Spins during the free games, too.
The Diamond is the Wild in the game, substituting all but Scatter. During the Free Spins, a random multiplier is added to each landing Wild.
NetEnt's Wild Wild West: The Great Train Heist is a fast-paced slot where you're the newest member of a group of heinous train-robbing villains!
Wild Wild West is a 5-reel, 3-row slot with 10 paylines, Wild symbols, Scatters, four different Free Spin features, and a Pick and Click bonus. Wilds substitute the other game symbols except for Scatter and Bonus. Collecting three or more Scatters awards you 10 Free Spins, and a Bonus symbol on reels 1, 3, and 5 trigger the Pick and Click Bonus with cash prices.
Each of the four Free Spin features has its own Wild; a regular Wild, an expanding Wild, a 2x multiplier Wild, and a spreading Wild. When you trigger the Free Spins in the base game, the feature is then picked at random on a lucky wheel spin.
What's more fun than uncovering a mystery? In Red Tiger's Mystery Reels slot you can do just that, and win up to 5,000x your bet.
The basic idea of the slot is easy. You have a 5-reel, 3-row game with 20 paylines from left to right. The symbols are also familiar to anyone who has ever played a slot game; fruits, blazing sevens, and bells. But wait, there are surprises, too!
Landing one or more Bonus Wheel symbols activates the Wheel Bonus with win multipliers. You can even win more spins on the wheel. In the base game, you can also land a golden apple which is the Mystery symbol. The Mystery symbol has a number inside, which determines how many steps it will randomly walk while copying itself on the reels, until revealing the real symbol.
In Japan, spring is the time when people get together and watch the cherry trees in their full bloom. NextGen's Cherry Blossoms is a tribute to the sakura petals covering the streets and being one of the highlights of the season.
Cherry Blossoms is a 5-reel and 3-row slot with 20 paylines from left to right. The symbol with a smiling Geisha is Wild which substitutes all other symbols (except Scatter) and doubles the win. Hit five Wilds on a single payline to win 12,500 coins.
Landing at least three Scatters on the reels triggers the Free Games feature of 15 Free Spins. During the feature, all payouts are tripled.
Triple Red Hot 7s from IGT takes you straight to Las Vegas with its classic design and catchy tunes. Get ready for some sizzling action!
The slot contains three reels, three rows, and five paylines. You can easily adjust the number of actively paying reels and line bets to get the total bet you want to play with. On each reel, you can find 3x Wild Multiplier Symbols that boost the payouts.
Landing three Bonus Symbols on any position on each reel triggers the Free Games with 7 free spins. You may retrigger the feature the same way the Free Games were initially won, all the way up to 700 free spins per bonus! During the Free Games, all wins get multiplied between 2 and 7 by Spitfire Multiplier.
Wheel of Fortune is probably one of the best-known TV show formats in the entire world. It's also been made into several board games, and it's also been a popular theme in casino games.
Wheel of Fortune Triple Extreme Spin is a 5-reel slot that offers 720 ways to win from both sides. By adjusting your coin value, you can affect your total bet as well as the top award shown on the game screen.
Landing three or more Scatters activates the Mini Wheel Bonus, which turns the Scatters into wheels with values on each sector. After the wheels stop, the values are added together and multiplied by the current coin value.
Should you land three or more Bonus symbols on the reels, you are presented with 12 envelopes. You may select as many envelopes as how many Bonus symbols you triggered the feature with. The envelopes hold pointers for blue, yellow, and red wheels, of which the blue and red wheels have coin wins and the yellow wheel contains multipliers.
African Savannahs offer a home for a variety of animals - you can hear them bellowing, chirping, and roaring in the WMS Interactive's slot game Raging Rhino.
Raging Rhino has six reels, four rows, and 4,096 paylines from left to right. The high-paying symbols are animals, whereas the low-paying symbols only contain letters and numbers. Wilds, looking like sunsets, substitute all other symbols except the Diamond Scatters.
3, 4, 5, or 6 Scatters landing anywhere on the reels reward 8, 15, 20, or 50 Free Spins respectively. Landing Scatters also pay coin wins; 3 Scatters pay 2x your bet, and 6 Scatters pay 1,000x. During the Free Spins feature, each Wild will carry either a 2x or a 3x multiplier.
Honoring the classic slot machines, Jackpot Inferno from Everi is an old-school game where the wheels are hot and features even hotter with 12 different Jackpots!
Jackpot Inferno is a 5-reel and 4-row slot game with 50 paylines from left to right. The symbols are your classics, such as hearts, fruits, sevens, and crowns. Landing three or more Bonus symbols triggers the Free Spin bonus, where only the high-paying symbols and Wilds are active.
Five or more Scatters activate the Jackpot Jump. In Jackpot Jump, you can select three mystery symbols from 20 available on the screen, and reveal either more picks, cash prizes, or Jackpot Inferno Symbols. The Jackpot Inferno symbols advance the locked-in progressive tier one step higher.
TOP 10 online slot machines by RTP
RTP stands for the percentage indicating how high or low the house edge is. The higher the percentage, the better the chances are for you to win back your bets. Some could say these games offer more bang for your buck than average slots.
- Mega Joker, NetEnt: 99.00%
- Jackpot 6000, NetEnt: 98.90%
- The Catfather, Pragmatic Play: 98.10%
- Jokerizer, Yggdrasil: 98.00%
- Blood Suckers, NetEnt: 98.00%
- Ugga Bugga, Playtech: 99.07%
- Ooh Aah Dracula, Barcrest: 99.00%
- Rainbow Riches Pick n Mix, Barcrest: 98.00%
- 1429 Uncharted Seas, Thunderkick: 98.50%
- Starmania, NextGen: 97.87%
Guide to slots: How slots work
Most online slots resemble physical slot machines. As a legacy of the old "one-armed bandits", there are many familiar elements:
When you start a round, the reels begin to spin. You want to line up similar symbols to consecutive reels, starting from the left. If you get enough of the same symbol on a payline, you win. How much? That you can find on the paytable, accessed via the info-pane.
Before each round, you have the option to adjust the bet size.
Reels
The main game area consists of vertical reels stacked together. The most prevalent layout is 5 reels with 3 symbols showing on each.
However, there are both bigger and smaller layouts. The traditional 3-by-3 reel setup is still popular in classic slots. The biggest go up to 6-by-12 or 9-by-9.
Symbols
The winnings are based on getting symbols on the reels in pre-specified combinations. The highest-paying symbols match the theme of the game. The low-paying symbols are usually:
- Card deck suits: ♣️ ♦️ ♥️ ♠️
- The top value cards of the deck: A, K, Q, J, and 10. Sometimes also 9 is included
Paylines
Most games feature specific paylines on which you need to get rows of symbols. In most games, the paylines only go from left to right, meaning your winning combination needs to start from the leftmost reel. The longer the row of symbols you get, the bigger your win.
The number of paylines varies. Few games may even have only one payline; most feature about 20, and some boast hundreds or even thousands of paylines.
When the number of lines exceeds the 100-mark, you can usually stop looking at the actual paylines. Instead, game suppliers speak of e.g. "243 ways to win". As long as there are the same symbols on the consecutive reels starting from the left, you're in for some winnings.
In the early days of online gambling, some slots had the option to choose the number of active paylines. However, it's quite rare now.
Info-pane
The info pane button is usually located in the corner of the game screen and marked with one of the following symbols: i, ? or 🏆.
From the info pane, you can view the:
- Payouts for different symbols
- Number of symbols needed for wins
- Descriptions of the special features
- Payline layout
- Rules of the game
Check out the info pane and you'll better understand what's happening in the game.
Bets
Excluding certain jackpot slots, you can select how much you want to bet per spin. The total bet size is affected by:
- Number of paylines (sometimes shown as "bet")
- Number of coins per payline (level)
- Coin value
EXAMPLE: There are 9 active paylines with 1 coin per payline and 10¢ coin value. Your total bet per spin is 9 x 1 x 10¢ = 90¢.
This may sound complicated, and some game suppliers have made choosing the bet size unnecessarily confusing.
Many game providers like to goof around with coin wins. Having a thousand coins clattering to the virtual money tray may sound appealing. However, with coin size at 1¢, your joy may be short-lived.
Some suppliers have taken a different approach. Instead of tweaking the coin amounts and sizes, you can just pick the total bet from a list.
Slot special features
Video slots are the most popular game type of online casinos. In addition to unique themes and dazzling graphics, they come loaded with special features. These include different versions of:
- Wild symbols
- Scatter symbols
- Free spins
- Bonus games
- Re-spins
- Expanding reels
- Big symbols
- Win both ways
Below, you'll find detailed descriptions of all special features. Use our US slot list to filter games based on your favorite features.
Wild symbols
The wild symbol helps you create more winning combinations. It works in a similar way as the joker in poker. Whereas the joker replaces the missing card in your hand, the wild symbol fills in for the missing symbol on the payline.
The wild symbol replaces any base symbol of the game. If the same wild is on multiple paylines, it can simultaneously stand-in for several winning symbols.
However, the wild symbol doesn't replace special symbols, e.g. scatters.
In addition to standard wilds, some games feature more specialized wilds:
- Sticky wilds stay on the reels for another round
- Walking wilds travel on the reels between rounds
- Stacked wilds appear on the reels as tall columns of wilds
- Random wilds are sprinkled on the reels after the spin
- Multiplier wilds multiply the winnings from the participating combinations
Scatter symbols
Scatter symbols are the slot special symbols that unlock free spins, bonus games or coin wins.
Unlike ordinary symbols, scatter symbols don't need to land on a specific payline. You only need to get a certain number of them on the reels. In many games, you need 3 scatters to launch the free spins or the bonus round.
Free spins
The term "free spins" can refer to free game rounds that casinos use to attract new players. On our casino bonus page, we tell you how to get no deposit free spins. This is one of the most common forms of casino bonuses.
In-game free spins are a completely different thing. You don't get them as a bonus from the casino; you win them by playing the game. You usually need to land 3 scatter or free spins symbols on the reels to start this feature.
You always get a certain amount of free spins. In some games, the exact number of scatters landed may affect the spin amount. In others, you can win more free spins during the feature itself.
The spins are given in the same bet size you used on the round where you unlocked the spins.
EXAMPLE: You play with a $1 bet and win 20 spins. Every one of these spins is worth $1, landing you a total of $20 worth of spins. While you're playing the free spins, they don't use up your real money balance.
When the free spins start, the appearance of the game often changes to make them distinct from the main game. The free rounds may also have some extra perks compared to the base game. Here are a few examples:
- Get a multiplier for all free spin winnings
- Some low paying symbols are removed from the game during the free spins
- Land additional wilds
There are also free spins games, where you can decide the exact nature of the feature. For example, you may choose between a larger number of spins with fewer extra perks and a smaller number of spins with more winning potential.
You may need to hit the feature several times to unlock all the options.
Bonus games
Bonus games are special features that often offer much bigger wins than the base game. You usually need to land a certain number of scatters on the reels to start the bonus game. In some slots, you can launch the bonus feature by paying a lump sum. This is known as Buy bonus.
Bonus games differ a lot from each other. Some may require decision-making or quick reactions. The simplest and most common version is the pick-n-click type of game. You reveal coin wins, free spins, and other rewards by clicking treasure chests.
Re-spins
Re-spins let you spin some or all the reels again without placing an additional bet.
Just like there are many kinds of wilds, there are also various types of re-spins:
- Walking re-spins make the reels spins again and again until the special symbol exits the reels
- Cascading reels explode all the symbols of the winning combination to make way for new wins
- Sticky re-spin re-rolls all the spaces that aren't part of a winning combination. This continues until there are no new wins
Sticky wins
The sticky win isn't exactly a re-spin, but it resembles this feature class a lot. When you win, the winning combinations stay on the reels for an additional round. You need to place a standard bet, though.
Other features
Expanding reels
Expanding reels copy themselves on one or more neighboring reels or add completely new places for symbols. This helps create longer, more valuable winning combinations.
Colossal symbols
Colossal symbols are bigger than the standard 1-by-1 symbols. They help create big clusters of the same symbol.
NetEnt's Spinata Grande is one of the most popular slots with colossal symbols.
Win both ways
In most slots, the paylines only go from left to right. You'll only get wins, if:
- You have the same symbol
- On the same payline
- On the consecutive reels (no gaps)
- Starting from the left-most reel
When you have a slot with wins both ways, the paylines can go from right to left and left to right. This practically doubles the number of wins.
The most famous slot with wins both ways is NetEnt's mega-hit Starburst.
Best online slot suppliers
NetEnt, Microgaming, Betsoft, Play ‘n GO, Yggdrasil… What makes one game supplier superior to another? Which one of them makes the best slots to play online?
If it's the age, then Microgaming and NetEnt are at the top of the list.
Microgaming had a long head-start with online gaming, as their first game and casino software were published as early as 1994. NetEnt followed in 2004, which is still quite early, and Play ‘n GO in 2006.
Naturally, with age comes experience and knowing your customers better. It's a great help while creating new slots if you actually know your audience and the trending features.
Those who have played slots for some time can easily distinguish one supplier's games from others. The suppliers do have their distinct style which they're known for. That causes some of the players to favor certain suppliers more.
Read more about US casino software providers.
How to find the best slot casinos
1. Find the best slot casino from our list
Here on Bojoko, we have a huge list of casinos with the best slots. You can use our ready-made filters to narrow down your search and add personal ones to find the perfect casino for you.
2. Read the casino reviews
When you have chosen a best slot casino, you can read what other users and our experts have said about it. Their first-hand accounts will give you a clear idea of what it's like to play there.
3. Go to the casino
Every review page has a big green ‘PLAY HERE' button that takes you straight to the casino. That button will also activate any special bonus offers that we might have for that particular casino.
4. Register and play
When you get to the casino, you need to register an account. Just follow the instructions, fill in the required information and verify your email if needed. Then you can just deposit and start playing the best slots.
Try different types of online slots
There are many kinds of slots available at US online casinos. With thousands of games to choose from, picking the right one may seem intimidating.
In this section, we cover the most common types of real money online gambling slots. Learn the differences between them and choose the games that suit your budget and preferences.
Modern video slots
Modern video slots constitute the bulk of the online casino slot games in the US market.
Bursting with cool themes, features, and graphics, these games can be very elaborate. They often feature storytelling, engaging animations, and prolonged features to keep players on the edge of their seats.
Fruit slots
Fruit slots are some of the simplest slots available. Modeled on the physical, coin-operated real money slot machines going back to the late 1800s, the online versions give the old formula a modern spin.
Online fruit slots can be divided into two categories:
- Classic slots closely replicate the old slot machines
- Fruit-themed slots use the familiar fruit symbols but include some modern features too
You can play both types of online slot machines at USA casinos for real money.
Progressive jackpot slots
Progressive jackpot slots feature a jackpot that grows until someone wins it. Whenever you make a bet on a progressive jackpot slot game, a portion of the money goes to the slot machine jackpot. The pot grows continually until some lucky player hits the winning combination.
Progressive slots offer the most lucrative potential out of all casino games out there. You can play them at most licensed online casinos in the USA.
Penny slots
Penny slot machines are a budget-friendly solution for many slot fans. With a minimum bet of only 1¢ per payline, you can spin for hours without making a big dent in your bankroll.
Most slots now have fixed paylines. Before you venture out to play penny slots online, you need to make sure to pick a slot that allows you to select the number of active paylines.
High limit slots
High roller slots are the best option for slot fans with deep pockets. The maximum bet goes up to hundreds or even thousands of dollars per spin. These high-limit slots are a natural choice for players who aren't afraid to risk big to win big.
Mobile slots
Mobile slots are the mobile-friendly version of the desktop slot games. Usually, the game is 100% the same, whether you play online slots games on your computer, smartphone, or tablet.
Sometimes, the controls may be optimized for a tiny screen, making it easier to use with just one hand. Some slots are also optimized for both screen orientations (landscape and portrait mode).
In 2021, all new releases are published on mobile. The support for Flash - a technology that used to dominate the desktop slots - ended in December 2020. That's why practically every game studio has switched to mobile-friendly HTML5 technology.
Some of the old, obscure online casino slot games are going to disappear from the game libraries for good. However, many studios are re-launching their older classics in a mobile-friendly format.
Best payout slots
High RTP (Return to player) slots have the smallest house edge of all online slot games. The RTP percentage tells you the share of your bets you can expect to win back.
These are averages calculated over thousands of spins. The results within a single gaming session may vary significantly.
Special themed slots
All slots have a theme, but some of the slots really rise above the others by picking a certain theme. It can be a popular TV show or a movie, or a game considered a cult classic. Even the fairy tales from our childhoods have been featured in slots - like Red Riding Hood, Big Bad Wolf, and Hansel & Gretel.
The theme can also be a fad or a phenomenon, of which an NFT is a perfect example. NFTs, or non-fungible tokens, are sort of cryptographic tokens used to certify a digital asset (a photo, video file, etc.) to be unique. In Red Tiger's NFT Megaways™ slot, you can play around with one of the first NFT tokens called Crypto Punks.
Compete in slot tournaments online
A slot tournament is a form of casino competition. There are different types of slot tournaments online. In some categories, you have to hit the biggest coin win in one spin or over several spins. In others, you need to wager the most in a certain slot.
Best slots in a nutshell
So, where are the best slots? What are the best slots? We can't tell you that because there are as many best slots as there are players. However, with these pointers, you'll easily figure out the right answer for you.
- Try slots from different suppliers. Be bold and give new slots a go. If you're unsure or don't want to lose your bets to a game that ends up being a disappointment, try them with play money instead.
- Check the other games. When you find a game you feel good about, check the supplier's other slots. One good find may lead you to a bunch of fun experiences.
- Learn about RTP, volatility, and variance. RTP, volatility, and variance are the three main things affecting how often, how likely and how much the game pays out. Knowing about them can help you define the best online slot machines for you.
RTP tells you how much the slot pays back to the players in the long run.
The level of volatility indicates the level of risk. If the slot is marked as highly volatile, you can expect the payouts to be scarce but higher.
Lastly, the level of variance tells you the likelihood of hitting any winning combination on a given spin. It's often mixed up with volatility as it also refers to the risk involved.
How to play slots responsibly
Colorful slots with upbeat jingles are easy to be drawn to. They invite you over with often cartoonish looks, or they're themed after something that interests you, like food, cars, music, or your favorite TV show. They're also fast-paced games where you may lose the track of time - and of your balance.
Online slots have a lot of different kinds of mechanics and visual aids to keep your attention to the reels. This is why it's very important to remember to play responsibly. Here are a few tips on how you can do that:
- Limits: Set limits on your bets and how long you're playing at a time
- Budget: Don't gamble away more than you can comfortably afford
- Odds: Remember that the longer you play the likelier it's for you to lose
Slots also come in different levels of volatility, meaning a high volatile slot may pay heftier but it's not as likely to hit big wins. Low volatile slots pay generally less but more often.
To put it simply: the higher the volatility, the bigger the risks you're taking.
For more information and contact details for support services in the US, check out our Responsible gaming page.
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Article by:
Kati Saari
Kati Saari has worked in the gambling industry since 2014. She has tested hundreds of casinos and written thousands of articles while evolving into an iron-clad expert in her field. Having a true passion for her work she’s adamant not to let anything past her without thorough research.