The Most Popular Legal Online Slot Games

The most popular online slot games that should be available at many of your favorite casinos. For advanced players, you'll have plenty of options for more complex online slots. There might even be a few high-roller games, too.

If hitting an online slot machine jackpot is at the top of your wish list, the first hurdle is choosing the right game. With creepy themes, vanishing symbols and enormous jackpots, it’s easy to see why fans are so devoted to the games on our list. 

Here's a breakdown of the most popular slots at the top online casinos.

Caesars Palace Online Casino

• Read our Caesars Palace Online Casino Promo Code & Review
• Bonus Offer: Get a 100% Deposit Match up to $2,500 + 2,500 Rewards Points! when you use promo code ACTION22500
• Alternative Bonus Offer: Get $10 on Registration + 100% Deposit Match up to $1000! Use the bonus code ACTIONLAUNCH
• Available States: New Jersey, Pennsylvania, West Virginia, and Michigan

The rebranded Caesars Palace Online Casino will feature nearly 500 of the best slots in the industry. While slots are a game of chance, learning to find one with the greatest player advantage is a skill. Developed by Everi, Triple Jackpot Gems’  96% return-to-player (RTP) is pretty good for a progressive. To identify a high-performance slot, start with its payout percentage.

Triple Jackpot Gems

Win one of five progressive jackpots on this classic Vegas-style slot game by Everi. 

• The game contains 3-reels, 3-rows and 9 paylines
• The RTP is 96.00% with medium volatility
• A minimum bet begins at $0.50 with a maximum bet of $4.50
• Maximum payout of $100,000
• Bet max for top jackpot

Triple Jackpot 3x Symbol

• The Triple Jackpot 3x symbol is wild
• Hit three on a payline to win the progressive jackpot
• Three on payline nine triggers the top progressive jackpot: max payout: $99,999,99
• Three Triple Jackpot 3x symbols on paylines one — eight trigger the second-tier progressive jackpot: max payout: $7,500

Jackpot Wild

• Three ruby Jackpot Wild symbols trigger third-tier progressive jackpot
• Max payout: $3,500
• Three amethyst Jackpot Wild symbols trigger fourth-tier progressive jackpot
• Max payout: $750

Any Three Mixed Wilds

• Any three Wild symbols trigger fifth-tier progressive jackpot
• Max payout:  $250
• The Number Seven
• Three ruby sevens - 70 credits
• Three white sevens - 40 credits
• Three translucent sevens - 25 credits
• Any three sevens - 10 credits

Bar Symbol

• Three double bars - 10 credits
• Three single bars - 5 credits
• Three mixed bars - 3 credits
• Double Jackpot Gems is compatible with most mobile devices

BetMGM Online Casino

• Read our BetMGM Casino Bonus Code & Review
• Bonus Offer:
  • MI, NJ and PA users can use promo code ACTIONCASINO to Get a 100% Deposit Match up to $1000 + $25 on the House!
  • WV users can use promo code ACTIONCASINO to Get a 100% Deposit Match up to $2500 + $50 on the House + 50 Bonus Spins!
• Available States: Michigan, New Jersey, Pennsylvania, and West Virginia

Slots aren’t beatable in the long run, but a player can win millions in a single session. Improve your chances of a big payday by placing your bets on a slot with a high RTP. Blood Suckers at BetMGM Online Casino has a sky-high 98% RTP.

Blood Suckers

If you’re already squeamish, the blood and gore on Blood Suckers may drive you over the edge. But if you’re not phased by the virtual carnage, the vampire-themed slot by NetEnt offers the winning combination of a high RTP and low volatility.

• The game contains 5-reels, 3-rows and 25 paylines
• The RTP is 98.00% with low volatility
• A minimum bet begins at $0.25 with a maximum bet of $50
• Maximum win of 1014.6x your wager

Features

Features include bonus games, fixed jackpots, wild and scatter symbols and free spins. You'll need three scatter symbols to trigger the Free Spins Bonus.

Symbols

• Garlic
• Crossbows
• Holy bibles
• A strange elixir
• The Vampire Lord

The Vampire Slaying Bonus

• Three stake and hammer symbols trigger bonus round.
• Players select from a room full of coffins and win cash prizes.
• The bonus round ends when the player uncovers an empty coffin.

Free Spins

You'll get 10 Free Spins with three vampire bride scatter symbols. During a Free Spins Bonus, you'll be eligible for more free spins. Your winnings will be increased by 3x during a Free Spin Bonus.

Scatter Symbols

• Depicted as two vampire brides
• Two scatters payout 2x your bet
• Three scatters payout 4x your bet
• Four scatters payout 25x your bet
• Five scatters payout 100x your bet

Wilds

• Symbol: A blood-sucking vampire
• Highest paying symbol in the game
• Landing five blood-sucking vampires on a line is worth 300x your bet.

Get more information about playing Blood Suckers or Blood Suckers 2 via the Paytable and Game Rules tabs.

bet365 Online Casino

• Read our bet365 Casino Bonus Code & Review
• Bonus Offer: As a new user, you can use code ACTION to receive up to a $1,000 Deposit Bonus!
• Available State: New Jersey

All-Time Favorites including 88 Fortunes, Starburst and Davinci Diamonds are featured on bet365 Online Casino. Tap the information “i” icon on your screen to view RTP, volatility level and number of reels and paylines.

Davinci Diamonds

One of the most popular features of this IGT classic, the tumbling reels bonus is triggered when you hit a jackpot. The winning symbols disappear and the ones in the row above take their places, giving you additional chances to win.

• Davinci Diamonds is a 5-reel, 3-row online slot with 20 paylines
• The RTP is 94.94% with low volatility
• Payouts will be multiplied by the number of lines played
• Betting range starts at a penny and maxes out at $5
• Maximum win of 25,000 credits

Symbols

Davinci Diamonds logo

5 = 5,000 credits 
4 = 500 credits
3 = 100 credits
The Mona Lisa
5 = 1,000 credits
4 = 200 credits
3 = 50 credits

The Portrait of a Musician

• 5 = 500 credits
• 4 = 80 credits
• 3 = 30 credits

The portrait of Cecilia Gallerani

• 5 = 300 credits
• 4 = 60 credits
• 3 = 20 credits

Ruby Gem

• 5 = 100 credits
• 4 = 30 credits
• 3 = 10 credits

Emerald Gem

• 5 = 100 credits
• 4 = 30 credits
• 3 = 10 credits

Topaz Gem

• 5 = 80 credits
• 4 = 20 credits
• 3 = 10 credits

Free Spins

• Five bonus symbols = up to 15 Free Spins
• Four bonus symbols = up to 10 Free Spins
• Three bonus symbols = up to four Free Spins

Scatters

• Symbol: priceless fine art
• Match three or more on a payline to win
• All payouts are multiplied by the size of your wager

Painting of Woman Symbol #1

• 5 = 30 credits
• 4 = 10 credits
• 3 = 4 credits

Painting of Woman Symbol #2

• 5 = 25 credits
• 4 = 8 credits
• 3 = 3 credits

Painting of Woman Symbol #3

• 5 = 20 credits
• 4 = 5 credits
• 3 = 2 credits

Wilds

• Depicted as a pink gem
• 5 Wilds = 25,000 credits

You can try your luck at sequels like Double and Triple Double Davinci Diamonds and Davinci Diamonds duel Play by downloading the bet365 app.

FanDuel Online Casino

• Read our FanDuel Casino Promo Code & Review
• Bonus Offer: MI, NJ, PA, & WV users: Deposit $10, Get $20 In Site Credit & Play It Again $1000 

• Available States: Michigan, New Jersey, Pennsylvania, and West Virginia

 New casino users only, 21+. Must be physically present in MI, NJ, PA and WV. Gambling problem? Call 1-800-GAMBLER. Full T&C apply.

FanDuel Online Casino offers more than 800 slots which are divided into categories for seamless browsing. A timeless classic, Divine Fortune is one of NetEnt’s most popular slots.

Divine Fortune

With a Greek temple in the background, Divine Fortune is inspired by Greek mythology. It features three separate progressive jackpots that pay out up to 600x your bet.

• Divine Fortune is a 5-reel, 3-row online slot with 20 paylines
• The RTP is 96.59% with medium-to-high volatility
• The minimum bet is $0.20 and the maximum bet is $100
• The maximum win is 600x your wager
• Denominations range from $0.01 to $0.50

Symbols

• Pegasus - Wild symbol
• Medusa
• The Minotaur
• Proud lion
• The eagle of Zeus
• Zeus’ Lightning - Free Spins symbol
• Greek Gold Coin - A Bonus symbol valued at between 10 - 200x your wager

Falling Wilds Re-spin Bonus

• The bonus is triggered when a Wild symbol appears on the reels
• The Falling Wild symbols slide down a row and the re-spin feature kicks in
• The Free Spins continue until the Wild symbol vanishes from the reels
• The number of re-spins you get is determined by the number of Wilds to hit the reels

Free Spins

• Triggered when at least three Free Spin Symbols appear on the reels
• Win five Free Spins when three Scatters land on the reels
• Five Scatters are good for 12 Free Spins

Wild-on-Wild

• Bonus round triggered when an Overlay Wild symbol lands on a Wild symbol
• When the Wild symbol covers the entire reel, each Wild shifts one place vertically
• Two Overlay Wild symbols activate a re-spin

Jackpot Bonus

• Collect three or more Bonus symbols to trigger the Jackpot Bonus game
• Bonus symbols include Falling Wilds Re-Spins
• Bonus symbols payout: 10x - 200x your wager

Jackpot Bonus Game

• Bonus symbols are placed on the reels at random before the game begins
• Bonus symbols that land on the reels during a spin, stay there until the bonus round is over
• Players start the game with three Free Spins and win more when a Bonus symbol lands anywhere on the reels
• All spins within the bonus round are free

Jackpots: Minor, Major, Mega

Minor Jackpot: Win 20x your bet when one entire row is covered by Bonus symbols.

Major Jackpot: Win 100x your bet when two entire rows are covered by Bonus symbols.

Mega Progressive Jackpot: Win 600x your bet when all three rows are covered by Bonus symbols. Your chance of winning the Mega Progressive increases with your bet size. As with many progressives, it pays to bet max on Divine Fortune.

DraftKings Online Casino

• Read our DraftKings Casino Promo Code & Review
• Bonus Offer: Get $35 in Casino Credits + a 100% Deposit Match up to $100!

• Available States: Michigan, New Jersey, Pennsylvania, and West Virginia

Must be 21+. Min. $5 Deposit. Must be physically located in: CT, MI, NJ, PA, WV. New DraftKings Casino customers only. Bonus issued as site credits that can only be used on DraftKings Casino. Eligibility restrictions apply. Gambling problem? Call 1-800-GAMBLER or text "CTGAMB" TO 53342. See draftkings.com/casino for full terms and conditions.

DraftKings is a major player in the world of online sportsbooks, but their online casino games are also rising in popularity. With hundreds of online slots games, players are sure to find one that suits their tastes.

Cleopatra

With its free spins, multipliers, and a demo mode, one of the most popular slots titles on DraftKings Casino is Cleopatra. Here are a few more details:

• Cleopatra is an Egyptian-themed 5-reel, 3-row online slot with 20 paylines
• The RTP is 95.02%
• The minimum bet is $0.01 and the maximum bet is $600
• The maximum win is 10,000x your wager

In addition to Cleopatra, DraftKings Casino offers other popular slots games, such as 88 Fortunes, Buffalo, Cash Machine, Fortune Coin, Golden Goddess, Gonzo's Quest, Starburst, and many more!

Borgata Online Casino

• Read our Borgata Casino Bonus Code & Review
• Bonus Offer: $20 no deposit bonus + 100% first deposit match up to $1,000 using code ACTIONBCASINO.
  
• Available States: Pennsylvania and New Jersey

We continue with another popular progressive, this time on Borgata Online Casino. Borgata offers 107 progressive slots with jackpots topping $2.6 million.

Wolf Riches

The chance to win millions makes progressives one of the most popular types of slots in the casino. Wolf Riches by PariPlay features a $5,478 jackpot that increases every time someone plays the game.

• Wolf Riches is a 5-reel, 3-row online slot with 50 paylines
• The RTP is 95.99% with medium volatility
• Betting starts at $0.50 and goes up to $100
• Maximum payout is 1,000x your bet amount

Random Multipliers

• Random multipliers can appear on the reels at any time
• Multipliers increase your winnings by 2x, 3x or 5x

Full Moon Random Rewards

• Prizes are active on reels one, three and five
• The player wins when a full moon symbol lands on one of the above reels
• Prizes include cash, Free Spins, multipliers and a spin on the Jackpot Wheel

Free Spins

• Before the Free Spins start, the prizes above reels 2 and 4 are unlocked
• Ten Free Spins are activated when a Full Moon symbol lands on the reels
• Two Bonus spins are triggered when a Full Moon hits again

Wild Symbol

• The Wild symbol is the word “Wild"
• Full Moon symbol is also wild
• Five Wilds pay 1,000x your bet
• Reels tilt at random, uncovering extra Wild symbols
• Wilds come in stacks of three.

Jackpot Wheel

Win the chance to spin the Jackpot Wheel when the Full Moon symbol lands on the reel with the Jackpot prize above it. 
This guarantees the wheel will land on one of the four jackpots below.

Jackpots: Mini, Minor, Major, Grand

• Mini Jackpot: 15x your bet amount
• Minor Jackpot 35x your bet amount
• Major Jackpot 250x your bet amount
• Grand Jackpot 1,000x your bet amount

Symbol Payouts

White Wolf Symbol

5 = 500 credits
4 = 75 credits
3 = 15 credits
2 = 2 credits

Brown Wolf Symbol

5 = 250 credits
4 = 75 credits
3 = 15 credits
2 = 2 credits

Two-Tone Wolf Symbol

5 = 150
4 = 35
3 = 10

Black Wolf Symbol

5 = 100
4 = 35
3 = 10

Although online slots require more luck than skill, it's recommended to follow a strategy to maximize your earning potential. Here's a list of resources that can help you become more prepared when you are ready to play online slots.

• How to Play Online Slots
• Best New Online Slots
• Watch Live Slots Online
• Best Casino Free Spin Bonuses
• Online Slots Glossary

Online casino gaming is currently legal in Michigan, New Jersey, Pennsylvania, West Virginia, Connecticut and Delaware. For more legal information regarding your state, take a look at our online casino legalization tracker.