Online Slot Machines with the Best Odds of Winning

Whether you're playing at a real casino or trying your luck in an online casino, slot machines are a staple for gamers everywhere. Slot machines have undergone a lot of changes over the years but they remain the most popular gambling choice in casinos.

Given that slot machines are so popular, there are a lot of gaming options to choose from.

So, you might ask yourself, what is the slot machine with the best odds? We'll get into that, as well as highlight the basics of the types of slot machines and how they work, as well as explain what slot odds mean.

Every online gamer will have an opinion about which slots are superior, but this is based on more of a gut feeling and superstition. Research does show that there are slot machines that offer gamers a better shot at winning than others.

Highest Payout Slot Machines

We ranked slots by Return to Player percentage, which we'll explain more below.

Game	RTP	Where to Play
Reel Rush	97%	Caesars
Dead or Alive	95%	N/A
Thunderstruck II	96.65%	BetMGM
Twin Spin Deluxe	96.61%	Borgata
Ozzy Osbourne Video Slot	96.3%	Caesars
Gonzo's Quest	96%	BetMGM
Jungle Jim	95.98%	BetMGM
Break Da Bank Again	95.43%	BetMGM
Mega Moolah	95%	Caesars
Aztec's Treasure	95%	N/A

READ MORE: Best Online Casinos for Beginners

RTP Percentage Explained

The table above showcases the slot games that offer the highest percentage of payout. Slot machines have a "Return to Player" percentage, which represents how much money slots return to players over time.

So for example, let's look at Reel Rush. It has a RTP of 97%, which means players are likely to make $97 for every $100 bet. This is an average, of course, so results will differ from player to player. You'll notice that even at the highest percentages, these games will always favor the house. Still, don't expect to find many slots with an RTP close to 99%.

Casino Slot Variations

In addition to the RTP, players also pay attention to variance. Slot machines pay out smaller winnings on a more frequent basis (low-medium variance) or more wins in a sporadic manner. Highly volatile slots can cause a lull in your winnings but also follow up with more substantial gains down the line. Jackpots tend to be the most profitable type of slot machines

Here’s a list of the most recognizable online casino slots and the different variations.

3, 5, 7, & 9 Reel Machines

You can choose between classic 3-reel slots or go for the more modern and riskier 5- and 7-reel slots, depending on personal preference. The probability to win is higher if a user plays the classic 3-reel slots.

3D Slots

You can play modern 3D slots if you prefer better graphics.

Penny Slots

Slots where you pay a penny per play, which allows you to stay in the game longer.

Progressive Slots

In classic and video games, you can place your bets to contribute to the jackpot.

TV Shows & Movies

If you're a pop culture connoisseur, you can play games that have the theme of their favorite shows or movies.

READ MORE: Casino Games With the Best Odds

Best Slot Machines to Play at the Casino in Legal Betting States

If you're in Michigan, New Jersey, Pennsylvania, West Virginia, Delaware or Connecticut, you're in luck because you have the opportunity to play at legal online casinos. Depending on which state you live in, you can try your hand playing slots through several different operators. We've picked out six of the top brands we'd recommend playing slots with, and they all include generous sign-up offers to get you started.

Best Online Casinos for Slots

Caesars Palace Online Casino Slots

With over 300 slot options, Caesars is a standout choice if you're in Michigan, New Jersey, Pennsylvania, and West Virginia and deciding which brand to register with.

Caesar's gaming library used to be more robust, but after the acquisition of William Hill, it has been scaled back some. What Caesars does offer is a choice of one of two enticing promo offers — Get a 100% Deposit Match up to $2,500 + 2,500 Rewards Points! when you use promo code ACTION2500 OR Get a $10 on Registration + 100% Deposit Match up to $1000! when you use promo code ACTIONLAUNCH. Both welcome offers are for new users, but you can only pick one, so choose wisely!

See our Caesars Online Casino for more in-depth information about what Caesars has to offer, including the types of games you can play and step-by-step instructions on how to sign up.

BetMGM Online Casino Slots

If you're in Michigan, New Jersey, Pennsylvania or West Virginia, BetMGM Casino offers a robust app to play all of your favorite slot games — and there is no shortage of options. There are more than 500 slot options so be sure to download the app on the Google Play Store or Apple Store.

BetMGM offers one of the most attractive deals you'll find when signing up at an online casino for the first time. If you're in Michigan, New Jersey, and Pennsylvania you'll get a 100% Match Bonus up to $1,000 plus $25 on the house when you use code ACTIONCASINO. In West Virginia, users who use the code ACTIONCASINO will get a match bonus up to $2,500 and $50 + 50 Bonus Spins for free!

See our BetMGM Online Casino review for more in-depth information about what BetMGM has to offer, including the types of games you can play and step-by-step instructions on how to sign up.

Borgata Online Casino Slots

Gamers in New Jersey and Pennsylvania can play slots through Borgata. Borgata, which is one of the oldest and strongest brands in the country and has one of the biggest slots libraries you'll find in the industry. Borgata puts out around 400 slots that are programmed by the likes of IGT, NetEnt, WMS and Konami, so you can expect quality games.

Borgata is offering a 100% deposit match up to $1,000, plus $20 on the house when you initially register with code ACTIONBCASINO.

See our Borgata Online Casino review for more in-depth information about what Borgata has to offer, including the types of games you can play and step-by-step instructions on how to sign up using the bonus code.

Betway Online Casino Slots

Online gamblers in New Jersey and Pennsylvania can also get their slots fix with Betway. Betway does not include a "FREEPLAY" amount for you to initially wager with, but other than that, the promotion is the same as BetMGM and Borgata: a 100% deposit match up to $1,000.

Betway's gaming library is different based on if you're playing in New Jersey or Pennsylvania. Therefore, be sure to look up what's offered in each state before signing up to ensure the game you want is there. Betway has between 150-250 slots available to play depending on the state.

See our Betway Online Casino review for more in-depth information about what Betway has to offer, including the types of games you can play and step-by-step instructions on how to sign up.

bet365 Online Casino Slots

Gamers in New Jersey have the European gaming giant bet365 as an option to choose from. Bet365 also has a robust online casino with hundreds of slot options. It showcases impressive web and app performances on Android and iOS, so be sure to download the app on the Google Play Store or Apple Store.

Included in bet365's offerings is a lucrative promo offer at sign-up: 100% deposit match up to $1,000 using code ACTION. Bet365 does not offer a "FREEPLAY" amount like BetMGM or Borgata but it's in line with many of the other offers on this list.

See our bet365 Online Casino review for more in-depth information about what Betway has to offer, including the types of games you can play and step-by-step instructions on how to sign up.

READ MORE: The Most Popular Legal Online Slot Games

WynnBET Online Casino Slots

WynnBET is an option for you if you're gaming in Michigan and New Jersey. A big name in the sports betting market, WynnBET has a large presence in the online casino world and it stands out with excellent slot choices.

WynnBET's web and app experiences on Android and iOS are also quite decent, so gambling from your couch or desk chair has never been a better option. The slot options are somewhat limited compared to the bigger casino brands, however, so keep that in mind when deciding if WynnBET is where you want to play.

See our WynnBET Online Casino review for more in-depth information about what Betway has to offer, including the types of games you can play and step-by-step instructions on how to sign up.

READ MORE: Online Slots Glossary

If you'd like to learn more about online gambling, specifically the best online casino brands and the best virtual games to play, check out The Best Real Money Online Casinos in the U.S.

• If you're in New Jersey, read our New Jersey Online Casino page.
• Michigan gamblers can check out our Michigan Online Casino page.
• Bettors in Pennsylvania can learn more by reading our Pennsylvania Online Casino page.
• West Virginia gamers can find out more on our West Virginia Online Casino page.
• Connecticut bettors can check out our Connecticut Online Casino review.
• Gamblers in Delaware can read our Delaware Online Casino review.