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Online Slots Guide

Online slots are the most popular game at online casinos because of their convenience and low learning curve. Many people ask whether online slot are legit or even legal — the good news is, yes!

Online slots are casino games within the online gambling umbrella, and many states have already legalized online gambling with more coming over the next several years.

If you’re looking to learn more about online slots or even free online slots, then this guide to online slots is a great place to start.

In this online slots guide for beginners, we will introduce you to virtual slots including its history, the software behind the reels, and other questions you might have about online slots.

Online Slots Guide

Best Overall New Jersey Casinos for Online Slots

If you’re looking for the best online casino for virtual slots, consider playing at some of the best online casinos in New Jersey.

Promotions
rating

Rating

ABV 100

ABV

This is the most important number! Casino bonuses are hard to understand. We have done the math and calculated how much money you get extra on a $100 deposit, after bonus terms and wagering. We call it Actual Bonus Value (ABV 100) to make it easy for you to compare. The higher number, the more generous bonus.

Type of bonus

Type

Bonus code

Code

Max bonus

Max

Wagering

Wag.

Extra bonus

Extra

Min deposit

Min

Expiry time

Exp.

Free bonus

Free

A free bonus is given on registration and needs no deposit. For more info about the free bonus, read the casino review

Launch date

Launch

Full review

Rev.

#1 out of 24 NJ casinos

$98.36

This is the most important number! Casino bonuses are hard to understand. We have done the math and calculated how much money you get extra on a $100 deposit, after bonus terms and wagering. We call it Actual Bonus Value (ABV 100) to make it easy for you to compare. The higher number, the more generous bonus.

100% match + $25 free

$25 FREEPLAY® received from this promotion is available at BetMGM Casino only and cannot be used on Jackpot Slots, Poker, or Sports

Not required

$300

5x

$10

14 days

Players has fourteen (14) days following qualifying deposit to complete FREEPLAY® wagering requirements on FREEPLAY®

25

August 2017

Harrah’s

Collect Bonus

#2 out of 24 NJ casinos

$100.19

This is the most important number! Casino bonuses are hard to understand. We have done the math and calculated how much money you get extra on a $100 deposit, after bonus terms and wagering. We call it Actual Bonus Value (ABV 100) to make it easy for you to compare. The higher number, the more generous bonus.

100% match

Get $10 free to start playing your favourite casino games including slots, blackjack, roulette and more

Not required

$300

5x

$10

7 days

10

November 2013

#3 out of 24 NJ casinos

$91.51

This is the most important number! Casino bonuses are hard to understand. We have done the math and calculated how much money you get extra on a $100 deposit, after bonus terms and wagering. We call it Actual Bonus Value (ABV 100) to make it easy for you to compare. The higher number, the more generous bonus.

100% match + $10 free

Not required

$1000

5x

$10

7 days

Players have 7 days to satisfy the Wagering Requirements from the day the bonus funds are awarded

10

November 2013

#4 out of 24 NJ casinos

$93.46

This is the most important number! Casino bonuses are hard to understand. We have done the math and calculated how much money you get extra on a $100 deposit, after bonus terms and wagering. We call it Actual Bonus Value (ABV 100) to make it easy for you to compare. The higher number, the more generous bonus.

100% match + $20 free

Casino online, no jackpot slots, no sports, no poker, no bingo

Not Required

$1000

15x

$10

30 days

$20 Bonus Dollars will be available on Borgata Casino account for three (3) days after completion of new account registration

20

November 2013

#5 out of 24 NJ casinos

$70.15

This is the most important number! Casino bonuses are hard to understand. We have done the math and calculated how much money you get extra on a $100 deposit, after bonus terms and wagering. We call it Actual Bonus Value (ABV 100) to make it easy for you to compare. The higher number, the more generous bonus.

100% match + $10 free

UBCASINO500

$500

25x

$10

30 days

10

July 2019

SugarHouse

Collect Bonus

#6 out of 24 NJ casinos

$99.50

This is the most important number! Casino bonuses are hard to understand. We have done the math and calculated how much money you get extra on a $100 deposit, after bonus terms and wagering. We call it Actual Bonus Value (ABV 100) to make it easy for you to compare. The higher number, the more generous bonus.

100% match

250MATCH

$250

1x

$10

30 days

September 2016

Golden Nugget

Collect Bonus

#7 out of 24 NJ casinos

$81.59

This is the most important number! Casino bonuses are hard to understand. We have done the math and calculated how much money you get extra on a $100 deposit, after bonus terms and wagering. We call it Actual Bonus Value (ABV 100) to make it easy for you to compare. The higher number, the more generous bonus.

100% Match + 200 Free Spins

100% Match bonus + 200 Free Spins on 88 Fortunes Megaways

Not required

$1000

20x

$30

30 days

100% Match bonus – Players are eligible for this welcome offer once within 30 days of a successful first deposit.

December 2013

#8 out of 24 NJ casinos

$62.07

This is the most important number! Casino bonuses are hard to understand. We have done the math and calculated how much money you get extra on a $100 deposit, after bonus terms and wagering. We call it Actual Bonus Value (ABV 100) to make it easy for you to compare. The higher number, the more generous bonus.

100% match + $25 free

100% Match 1st Deposit Bonus and $25 No Deposit Bonus

Not Required

$500

20x

$10

15 days

25

July 2017

#9 out of 24 NJ casinos

$66.76

This is the most important number! Casino bonuses are hard to understand. We have done the math and calculated how much money you get extra on a $100 deposit, after bonus terms and wagering. We call it Actual Bonus Value (ABV 100) to make it easy for you to compare. The higher number, the more generous bonus.

100% match

CASINO500

$500

20x

$10

30 days

October 2019

#10 out of 24 NJ casinos

$65.46

This is the most important number! Casino bonuses are hard to understand. We have done the math and calculated how much money you get extra on a $100 deposit, after bonus terms and wagering. We call it Actual Bonus Value (ABV 100) to make it easy for you to compare. The higher number, the more generous bonus.

120% match

Not required

$500

30x

$20

First deposit only of $20 minimum

60 days

Bonus must be wagered 30 times within 60 days from granting

November 2013

Mohegan Sun

Collect Bonus

#11 out of 24 NJ casinos

$54.55

This is the most important number! Casino bonuses are hard to understand. We have done the math and calculated how much money you get extra on a $100 deposit, after bonus terms and wagering. We call it Actual Bonus Value (ABV 100) to make it easy for you to compare. The higher number, the more generous bonus.

100% match

To be eligible, you must be a MoheganSunCasino.com account holder with no prior deposits

MOHEGAN

$1000

30x

$10

30 days

July 2015

#12 out of 24 NJ casinos

$54.55

This is the most important number! Casino bonuses are hard to understand. We have done the math and calculated how much money you get extra on a $100 deposit, after bonus terms and wagering. We call it Actual Bonus Value (ABV 100) to make it easy for you to compare. The higher number, the more generous bonus.

100% match

1KFREE

$1000

30x

$10

30 days

February 2015

Tropicana

Collect Bonus

#13 out of 24 NJ casinos

$48.65

This is the most important number! Casino bonuses are hard to understand. We have done the math and calculated how much money you get extra on a $100 deposit, after bonus terms and wagering. We call it Actual Bonus Value (ABV 100) to make it easy for you to compare. The higher number, the more generous bonus.

Cashback

When you make your first deposit of not less than $10 in cash and place a first wager are eligible to receive either one of the following: (1) if their Net Loss exceeds 90% of their First Deposit at any time within seven (7) calendar days after placing the First Deposit and First Wager, the value of their First Deposit, up to a maximum of $100 in cash, or (2) if their Net Loss does not exceed 90% of their First Deposit after the conclusion of the seven (7) calendar days after placing the First Deposit and First Wager, the value of their Net Loss, up to a maximum of $100 in cash.

Not required

$100

1x

$10

A withdrawal of any kind from your account at any time prior to or during the 7 Day Period will automatically disqualify you from the Promotion.

7 days

November 2013

#14 out of 24 NJ casinos

$48.65

This is the most important number! Casino bonuses are hard to understand. We have done the math and calculated how much money you get extra on a $100 deposit, after bonus terms and wagering. We call it Actual Bonus Value (ABV 100) to make it easy for you to compare. The higher number, the more generous bonus.

Cashback

When you make your first deposit of not less than $10 in cash and place a first wager are eligible to receive either one of the following: (1) if their Net Loss exceeds 90% of their First Deposit at any time within seven (7) calendar days after placing the First Deposit and First Wager, the value of their First Deposit, up to a maximum of $100 in cash, or (2) if their Net Loss does not exceed 90% of their First Deposit after the conclusion of the seven (7) calendar days after placing the First Deposit and First Wager, the value of their Net Loss, up to a maximum of $100 in cash

Not required

$100

1x

$10

A withdrawal of any kind from your account at any time prior to or during the 7 Day Period will automatically disqualify you from the Promotion.

7 days

January 2014

#15 out of 24 NJ casinos

$47.53

This is the most important number! Casino bonuses are hard to understand. We have done the math and calculated how much money you get extra on a $100 deposit, after bonus terms and wagering. We call it Actual Bonus Value (ABV 100) to make it easy for you to compare. The higher number, the more generous bonus.

Cashback

Place your first wager on any one of Sponsor’s Casino offerings in order to trigger a 24 hour period beginning upon placing that first wager to place additional wagers, after which Sponsor will refund 100% of your net losses from such wagers incurred during such 24 hour period (the “Risk Free Period”), up to one thousand dollars ($1,000) in Casino Site Credit (“Promotion Bonus”)

Not required

$200

1x

$10

1 day

November 2013

Hard Rock

Collect Bonus

#16 out of 24 NJ casinos

$44.57

This is the most important number! Casino bonuses are hard to understand. We have done the math and calculated how much money you get extra on a $100 deposit, after bonus terms and wagering. We call it Actual Bonus Value (ABV 100) to make it easy for you to compare. The higher number, the more generous bonus.

100% match

When you make a first-time deposit, you will receive matching bonus funds in an amount equal to 100% of your first deposit, up to a maximum of $1,000

Not required

$1000

40x

$20

14 days

July 2018

#17 out of 24 NJ casinos

$44.57

This is the most important number! Casino bonuses are hard to understand. We have done the math and calculated how much money you get extra on a $100 deposit, after bonus terms and wagering. We call it Actual Bonus Value (ABV 100) to make it easy for you to compare. The higher number, the more generous bonus.

100% match

Make a qualifying deposit of $10 or more and claim the offer within 30 days of registering your account to qualify for a 100% matched amount in Bet Credits, up to a maximum of $500

Not required

$500

40x

$10

30 days

Your largest deposit/transfer (minimum $10) to Casino in the seven days prior to claiming the offer will qualify for a 100% matched bonus, up to a maximum of $1,000. This is your ‘qualifying deposit/transfer’.

August 2019

Ocean Resort

Collect Bonus

#18 out of 24 NJ casinos

$29.76

This is the most important number! Casino bonuses are hard to understand. We have done the math and calculated how much money you get extra on a $100 deposit, after bonus terms and wagering. We call it Actual Bonus Value (ABV 100) to make it easy for you to compare. The higher number, the more generous bonus.

100% match + $25 + 50 FS

Not required

$500

60x

$50

7 days

July 2018

William Hill

Collect Bonus

#19 out of 24 NJ casinos

$24.33

This is the most important number! Casino bonuses are hard to understand. We have done the math and calculated how much money you get extra on a $100 deposit, after bonus terms and wagering. We call it Actual Bonus Value (ABV 100) to make it easy for you to compare. The higher number, the more generous bonus.

Cashback

100% Cashback on your first deposit up to $50

Not Required

$50

2x

$10

5 days

September 2018

PokerStars

Collect Bonus

#20 out of 24 NJ casinos

$20.86

This is the most important number! Casino bonuses are hard to understand. We have done the math and calculated how much money you get extra on a $100 deposit, after bonus terms and wagering. We call it Actual Bonus Value (ABV 100) to make it easy for you to compare. The higher number, the more generous bonus.

100% match

Deposit $25 or more with the code ‘WELCOME1’ and you’ll get a 100% match deposit bonus up to $500. Claim a second match deposit bonus up to $500 & a Slots bonus . Next up, you’ll get a 100% match deposit bonus up to $500. On top of that, you’ll get a Mystery Chest containing a Slots bonus worth up to $500 that you can use to play any Slots. Just make a deposit of $25 or more with the code ‘WELCOME2’. Finally, make your third deposit of $25 or more using the code ‘WELCOME3’ to get another 100% match deposit bonus up to $500. Also, you’ll get another chance to open a Chest with another Slots bonus worth up to $500

WELCOME1

$500

80x

$25

28 days

To claim the second welcome bonus you must make this deposit within 14 days of your first qualifying deposit

March 2016

BetAmerica

Collect Bonus

#21 out of 24 NJ casinos

$16.69

This is the most important number! Casino bonuses are hard to understand. We have done the math and calculated how much money you get extra on a $100 deposit, after bonus terms and wagering. We call it Actual Bonus Value (ABV 100) to make it easy for you to compare. The higher number, the more generous bonus.

25% match

Register an account and enter code PLAY500 when making a deposit. Player will be awarded a 25% Deposit Match up to a max of $500 up to a max casino bonus of $500.

PLAY500

$500

20x

$10

7 days

Players will have 7 days to complete the rollover requirements before the bonus expires

February 2019

#22 out of 24 NJ casinos

N/A

N/A

For detailed explanation of wagering requirements, see Pala full review. Link below.

$10

November 2014

#23 out of 24 NJ casinos

N/A

N/A

-2x

$10

N/A days

November 2013

DraftKings

Collect Bonus

#24 out of 24 NJ casinos

N/A

N/A

For detailed explanation of wagering requirements, see DraftKings full review. Link below.

$10

N/A days

July 2018

Guide to Online Slots

Why are online slots so popular?

The reason many gamblers flock to slot machines at land-based casinos is the same reason many virtual gamblers are choosing online slots as their game of choice at online casinos —  they’re easy to play. You see, playing slots requires much less skill than playing other casino games like blackjack, poker, or rouletteThere is definitely a strategy to slots, but it won’t require doing calculus or counting cards, because slots are rooted in chance with Random Number Generators (RNGs) controlling the outcome of your spin entirely.

So, if you’re feeling lucky and want to take a chance at online slots, you may want to read our guide to online slots first as a primer before placing your first bet. In our overview of virtual slots, we cover the following topics.

A History of Online Slots

Online slots wouldn’t be what they are today without the advent of the first video slots. In 1976, the Las Vegas-based company Fortune Coin used a modified television for the display instead of having the physical reels be visible through glass. This first video format was available for play only at the Las Vegas Hilton Hotel, and it was a major step forward in creating the graphical user interfaces we’re used to today.

Twenty years later, WMS Industries released “Reel ‘Em” in 1996, the first video slot to feature a second bonus-round screen, where the player could earn extra payouts. Around this time, slots had become so popular at casinos that they brought in about 70% of their income and took up about 70% of their floor space.

The 1990s also brought the internet boom, and with that came the development of the first online casinos. While casino classics like blackjack and roulette were the first to go online, slots weren’t far behind. Just like with physical casinos, slots became more popular than traditional casino games in the online arena, and so they have been making up the bulk of online casinos’ game offerings ever since.

In their first iterations, online slots remained very similar to their land-based counterparts, with your basic three reels and the same classic symbols. But designers soon realized that they didn’t have to feel beholden to the old format and its inherent restrictions. New games started to arrive on the scene, incorporating exciting themes or unconventional layouts and structures.

Any online casino now has a vast library of slots to play, and developers are also creating slots that are just as easy to play on mobile devices to keep people playing wherever they want.

How Online Slots Work

Slots, whether physical or online, are simple to play: You deposit your money, select your paylines, and hit the button to see if you’ve won the round. However, the internal mechanics are much more complicated.

Random Number Generators (RNG)

To ensure that no one (not even the casino) can cheat, the software inside online slots uses random number generators (RNGs) to determine which symbols display on the reels at the end of a spin.

Independent agencies test the RNG software before launch and periodically thereafter to ensure that it is truly randomized and unbiased. There are also licensing and regulatory bodies that test the software to guarantee that it can’t be tampered with by the casinos or the players.

So how do RNGs actually work? The software uses a complex algorithm to calculate a particular number, and the game expresses that number as a specific combination of symbols across the reels. It does this again and again, working from thousands of number combinations. If one of those combinations comes up on one of your paylines in the right order, you win the round.

Placing Bets

First, select your coin size (which is the size of your stake). It could be as low as a $0.05 coin.

Then, look at your paylines. They may be just horizontal across the reels or go along diagonals and criss-crossing shapes. The more paylines, the more possibilities you have of winning. Some slots might allow you to use more than one coin on the same payline, too.

Once you’ve placed your bet, you click the “spin” button and your wager will get deducted from your balance.

Receiving Payouts

When the reels stop spinning, the software checks for the required number of matching symbols on active paylines. The amount that you’ve won gets added to your balance, and then you can spin again with the same bet as before or with a different bet.

What To Know When Choosing Your Slot

To help you get the most fun (and hopefully the most winnings) out of your online slot, make sure you’re picking the right one. Take a look at these aspects before depositing your money into just any online slot.

Return to Player (RTP)

This is the amount that you can expect to win, expressed as a percentage of your total bet. These numbers have to be less than 100% so that the casino can make some money, but the RTP on online slots is often as high as 90-95%, and some even go as high as 98%.

It’s important to understand what this actually means. Let’s say that you’re playing on a slot with a 95% RTP. Out of every $100 on average that you bet, you’d win back $95. Think of it as the reverse of a house edge — the higher this number is, the less money you’ll lose on average.

Do note that a game’s RTP doesn’t indicate how often you should expect to win. Instead, it’s more about what your long-term chances of winning might be.

You can find the percentage of an online slot by Googling your chosen slot game’s RTP. Plenty of casino websites share the RTPs of the slots that they review. Another way is to check the game’s settings or “Help” section for mention of its RTP.

Bonus Features and Multipliers

One of the best parts of playing slots online is that you get the chance to play bonus rounds or get other premium experiences. Check the game’s paytable for any listed special features. Lots of online slots include bonus symbols that can trigger mini-games like spinning a wheel.

You should also find out if the slot has special symbols like a scatter. Scatter symbols are great because if three or more appear on the reels after a spin, this triggers a round of free spins. This then compounds if more scatter symbols appear during these free spins. These bonus rounds can multiply your payout like crazy.

In addition, look to see if the slot has any wild symbols. These work just like wild cards in card games, mimicking the symbols around them to complete a winning combination and giving you a better edge.

Lastly, see what the multipliers are like. These can multiply your winnings by 2x up to 10x or more. Some multipliers need to be unlocked by scatters while others are part of different bonus rounds. Check to see how you need to bet in order to qualify for multipliers and other bonuses.

Paylines

A payline is the active line on the slot machine that you want a winning combination to appear on. In the original, three-reel slot, there was just one payline: the middle row, straight across.

Now, you can regularly see three, five, 20, or even far more paylines on a single online slot, all in different directions — vertically, diagonally, and more. You don’t have to bet on every available payline, but if you wager on more paylines at once, you’re more likely to land a winning combination. Just remember that you’re paying for every payline you activate. If you want to play on five paylines, then you’ll be paying five credits per spin instead of one.

Types of Online Slots

We’ve come a long way from the Liberty Bell slot machine of old. Branch out from what you know and give these different types of slots a try.

Three-Reel Slots

These slots are based on the classic machines that used to be in arcades all over the world. This is the simplest form of slot, so it’s great for absolute beginners and total purists. The window shows three columns and three rows of symbols.

On the most retro of online slots, only the middle row is the payline. Others can have up to five paylines, meaning that there can be up to five different ways that the symbols can line up to create a winning combination. These paylines go across the top, middle, and bottom lines and then across the two diagonals.

You place your bet and then spin the reels. Once they stop, if the symbols on any of the paylines match up to one of the winning combinations listed on the paytable, you win that amount of money. Usually, the winning combinations on a three-reel slot have to be three matching symbols (though there might be a wild symbol on the reel that helps with this).

Five-Reel Video Slots

These types of slots are like three-reel slots, wherein the paylines can be found going both horizontally and diagonally. In addition, they can also make different shapes around the screen, adding more chances for winning combinations (sometimes up to 100).

These video slots are much more visually sophisticated than their three-reel counterparts. They’re based around branded or other thematic content, complete with audio and visual effects and even storylines to give you the full entertainment experience.

The paylines will often light up in different colors to show how the combinations need to form in order to win. You need to bet on each payline that you want in play, of course. If you’re playing $0.05 on each payline on a 50-line slot, your total bet will equal $2.50.

Five-reel slots are where you’ll start to see bonus features like wilds and scatters.

Because of all these extras, the pay tables are much more detailed than on a three-reel slot. Don’t get overwhelmed by this amount of information, though — it’s giving you all the details you need to make your bets.

Most of the slots you see online now are in the video and 3D realm, making them the most popular type of online slot.

Progressive Slots

Normally, each individual slot has a set jackpot, or highest payout. With a progressive slot, however, every gambler playing on that particular slot contributes to increasing the jackpot with every play. In essence, a portion of each wager gets set aside for this special bank. This means that the highest payout isn’t a fixed amount.

You’ll easily be able to see how big the progressive jackpot has gotten, as the online slot should display that amount above the middle reels on the game screen.

A player could win the progressive jackpot through a particular combination of symbols or in a bonus game. Whoever wins gets the full amount in that pot. Once that happens, the jackpot resets and starts again, building up in value with every round played.

Not all online slots have a progressive jackpot, but many do. So keep an eye out!

Where You Can Play Online Slots in the U.S.

Most states have officially banned online gambling within their jurisdictions, and you can’t bet across state lines. But, you have the ability to gamble online through establishments based in these four states currently:

Michigan is on the way to being the fifth state to allow online gambling operations. Their governor signed legislation to allow it in 2020, and now regulators and operators are working out the details around rules and infrastructure.

Online casinos in these states may ask for proof of residency, like a valid driver’s license, to prove that you live within their state and aren’t trying to gamble across state lines.

Where Else You Can Play Online Slots

What if you don’t live in one of those five states? You still have access to online gambling options, just not domestically. Plenty of online casinos are based in other countries where you can still create an account and not break any laws.

Some countries have stricter regulations than others when it comes to running online casinos, so do your due diligence in checking where your casinos of choice are based out of. Some countries have rigorous enforcement over player safety and operator integrity. Meanwhile, others are more loose with their governance and will offer licenses to any business that simply wants a low tax rate.

Check to see where your online casinos of choice are based out of. Jurisdictions with some of the highest standards for regulations and player protections include:

  • Antigua and Barbuda
  • Belgium
  • Denmark
  • Gibraltar
  • Isle of Man
  • Kahnawake
  • Malta
  • New Jersey
  • Philippines
  • United Kingdom

If you come across a casino that says it’s licensed in one of these regions but you feel skeptical, you can check with the licensing authority. The licensing seals on a casino’s website should be clickable and pull up an external page on that authority’s website showing the details of that casino’s license.

Casinos based out of countries with looser regulations should be approached with some caution. They offer fewer to no protections to players if you end up in a dispute with the casino, and they have far less stringent enforcement over their licenses. So be a bit more cautious with casinos based out of:

  • Anjouan/Comoros
  • Belize
  • Costa Rica
  • Curaçao
  • Panama

This doesn’t mean that you should automatically refuse to gamble at online casinos based within these countries, but do your research before you sign up.

Online Slots FAQ

The core principles of a traditional slot machine also apply to online slots. Your goal is to spin the slot and have the reels land on a winning combination across the paylines. These spins are completely random thanks to RNGs and offer you the same odds every time you spin. The main difference between online slots is the varied and complex gameplays available because of the digital nature of the virtual slot.

Yes, free online slots is a real thing! There are several ways to play online slots for free. You can play the game in demo mode, which is free but doesn’t afford you any chance to win real money. You could play the slot for free if it’s part of a bonus offered by the casino through its first deposit bonus or no deposit bonus offerings. Finally, some slots have free spins baked into the gameplay and you may be awarded these free play spins while playing the slot.

100%, yes! Online slots and slot machines are completely random and each spin is independent of the last. Slots are measured for their randomness through third-party providers to ensure the RTP displayed matches the true payout from the game. These regulatory bodies ensure complete randomness and as long as you are playing at a legal online casino, you can rest assured that the online slot you are playing is 100% random.