Top Highest Payout Online Slots

Finding slots with a high payout can be tricky business. After all, isn’t it all down to luck? Not quite.

We at oddschecker have run the numbers to find the highest payout online slots, based on a few factors. We’ve also found the best casinos to play them on:

Oddschecker’s highest payout online slots

• Bloodsuckers - RTP 98%, low volatility
• Medusa Megaways: RTP 97.63%, mid-high volatility
• Sweet Bonanza: RTP 96.48%, high volatility
• Big Bass Splash: RTP 96.71%, high volatility
• Sugar Rush: RTP 96.50%, high volatility

How To Spot the Highest Paying Real Money Online Slot

When someone looks for the highest payout online slots, they are often looking for two things: Slots that payout frequently, and slots that payout big.

Slot designers must find a balance, otherwise they risk leaving players disappointed. This is called volatility. A high volatility slot will payout infrequently, but when it does, it pays out big, while a low volatility slot will payout often, but these payouts will likely be small.

Another important factor to consider is RTP (return to player). This percentage represents, on average, how much players get back from an average play session. For example, if a slot has a 95% RTP, that means for every $100 bet, players can expect $95 in return.

In a low volatility setting, this may mean placing three $10 bets before winning $28.50. In a high volatility setting, this may mean placing 20 $10 bets before winning $190. Luck comes, therefore, from winning early.

While everyone should gamble responsibly, it is especially important to do so when playing high volatility slots. Having a healthy bankroll, accepting losses and setting limits on your site of choice is critical. But, for those taking the proper precautions, we have listed some of the highest payout online casino slot games in 2025.

Highest Payout Online Slots in 2025

Want to know our suggestions for the highest payout online slots? Here is our top 5…

Bloodsuckers: RTP 98%, Low Volatility

The highest RTP slot on this list, Bloodsuckers by NetEnt is a horror-themed slot with chances to increase your stake (no pun intended) by up to 1,014x. Even if it’s not Halloween, this game is sure to thrill – though with its low volatility rate, expect this highest payout online slot to succeed in frequency, rather than size.

Bloodsuckers is available to play through several online casinos, including DraftKings and FanDuel. CLICK HERE to sign up to DraftKings and give this game a spin!

Medusa Megaways: RTP 97.63%, Mid-high Volatility

Based on the creature of Greek mythology, Medusa Megaways offers an impressive 117,000+ ways to win, and a chance to increase your stake by up to 50,000x – a high payout indeed! Available to play via DraftKings, this slot also offers cascading reels, free spins and other bonus features, making this one a must for those looking for the highest payout online slot that will have them on the edge of their seat.

Sweet Bonanza: RTP 96.48%, High Volatility

As far as highest paying slots go, Sweet Bonanza is nothing to scoff at. Created by slot industry titans Pragmatic Play, a maximum win on Sweet Bonanza could earn you $21,000 from a simple $1 spin. Pretty sweet, if you ask us.

Play stays fresh with free spin bonus rounds, tumble features and more, with bright and colorful graphics making for a whimsical, enjoyable experience. Currently only available via sweepstakes casinos, WOW Vegas offers a great way to give one of the highest payout online slots a try. Alternatively, this game is available via Grosvenor Casino.

Big Bass Splash: RTP 96.71%, High Volatility

For a middle-of-the-road RTP and volatility slot, the highest payout online slot for you may just be Big Bass Splash. BetMGM players are just one group with access to this game, with new customers able to make the most of one of BetMGM’s highest payout online slots by CLICKING HERE for its new player offer. While the theme of this game will be fishy, we can assure you, that high payout rate certainly is not!

Sugar Rush: RTP 96.50%, High Volatility

Another sweet-themed entry to this list, Sugar Rush is one of the highest payout online slots on account of its high RTP and high volatility. Bright colors are sure to keep players engaged, though of course, like sweets, it is important to play in moderation.

This slot is available through a range of operators, including FanDuel. For those wanted to satisfy their sweet tooth with a high volatility thrill, CLICK HERE to access FanDuel’s new player offer, which includes bonus spins and $40 in casino bonuses.

Where To Play the Highest Payout Online Slot Machines

Operators across the U.S. will offer a range of games on their sites, all ranging in RTP rate and volatility. However, for the games listed above, we would suggest the following:

FanDuel Casino

FanDuel is the biggest real money online casino in the U.S., in terms of market share. Alongside DraftKings, they dominate an estimated 2/3 of the market, making it a likely contender for the highest paying casino.

Given its scope, FanDuel offers many of the markets highest payout online slots. Alongside Sugar Rush, FanDuel also offers an exhausting list of titles, including exclusives such as Huff N’ Puff Money Mansion and Vegas Matt Cash Eruption.

Check out the link below to access FanDuel’s bonus spins and casino bonus offer.

BetMGM Casino

A joint venture between Vegas mainstay MGM International and UK powerhouse Entain, BetMGM has utilized its brand legacy to become one of the biggest online casino operators in the U.S.

The number of high volatility, high RTP slots on BetMGM likely make it one of the highest paying casinos. It offers access to games including Big Bass Splash, as well as a range of exclusive titles from famous IPs including The Godfather, The Wizard of Oz, The Goonies and more.

CLICK HERE and use code CHECKER to make the most of this!

Golden Nugget Online Casino

With locations in Las Vegas, Lake Tahoe, Atlantic City and more, Golden Nugget is no stranger to where to play the highest payout online slot machines. Online, Golden Nugget continues this tradition, with players having access to a range of titles including Buffalo and Friends, Bloodsuckers and more. New players can access these games and more by CLICKING HERE, and cash in on its free spins and slot deposit match offer.

DraftKings Casino

Alongside FanDuel, DraftKings sits at the top of the U.S. online casino food chain. Naturally, its selection of the highest payout online slots reflects this, with players able to take a spin on Bloodsuckers, Medusa Megaways and more on the platform.

Caesars Palace Online Casino

Another Vegas staple gone virtual, Caesars Palace offers access to a range of the highest payout online slots. When asking which slot game has the highest chance of winning, Caesars Palace comes stocked with a full arsenal, as well as titles featuring the iconic Caesars brand itself.

New players can CLICK HERE and use code CSCASINO2500 to access Caesars Palace’s introductory offer, which includes a deposit match and registration bonus.