Highest Paying Online Slot Machines

Every slot machine that you play at an online casino has their own Return to Player (RTP) percentages. The RTP determines the odds of making a profit during a session. The higher the RTP, the less of an edge the house has over you. In short, with a higher RTP percentage, you stand a better chance of making a profit.

Return to player – Understanding payouts

The minimum percentage is usually 85%, but a solid payback percentage is between 95% and 97%. Keep in mind that slot machines with higher bet denominations also come with higher percentages for payouts. But be aware, if you come across a slot machine with a very high RTP (+98%), you probably can’t trust it. Legal and verified online slot machines have a maximum RTP of 97%. Anything higher is unlikely to be legal or appear on trusted sites.

Online slot machines that pay the most

Out of the hundreds of online slot machines, some are of course more profitable than others. In general, a reliable online casino advertises its most profitable slot machines. After taking a closer look, we distinguished two kinds of machines; video slots and progressive slots. Video slots have the highest payout rates. The best performing casino sites have pay-to-player percentages that can be as high as 97%. By contrast, progressive slots can win you the most money, but with a lower Return to Player. Our experts conclude that video slots are the preferred choice because you can win more often and there are still huge jackpots.

#1 – HOT INK

Hot Ink - a video slot with a high RTP – this slot machine is the one that pays the most.

The maximum amount you can hope for from this slot machine is 122,500 coins. Life is always lived to the max by the tattoo artists at Hot Ink tattoo parlor and you can tag along for the ride by spinning the five reels. There are 1024 ways to line-up winning combinations. Hot Ink keeps things interesting with a few extra symbols. One of these is the wild symbol which is depicted by the slot machine’s logo. Not only does this symbol replace others to make wins, but also rewards you with a jackpot multiplier of x1000 if five are lined up on consecutive reels.

Where to play Hot Ink?

We recommend playing Hot Ink at Golden Tiger. In total, you can claim up to $1500 in welcome bonuses on the first five deposits. Customer support is available 24/7 to help players make the most of their gambling time.

Payout (RTP)97.5%
Max jackpot1000 X
Accepted currenciesC$, $, €, £
TypeVideo slot
Reels and pay lines5 reels. 1024 ways to win.
Range of bet0.50 to 125.00
Coins per line1 to 10
Coins size0.01 to 0.25



Thunderstruck 2 is a lucrative online slot - the payout of this casino game is higher than 97%.

This fantastic video slot with mythological gods from the Old Norse stories has five reels and 243 ways to win. Moreover, this slot features four different bonus events where you can win up to 2.4 million coins. Randomly triggered during play – the Wildstorm feature makes the 5 reels go wild. The jackpot for hitting 5x wild reels is 2,400,000 coins.

Where can I play Thunderstruck 2?

We recommend playing Thunderstruck 2 at UK Casino Club. In total $700 worth of welcome bonuses are given away, and these bonuses are profitable thanks to easy-to-follow terms of use. UK Casino Club is a top-rated online casino in England.

Payout (RTP)97.1%
Max jackpotUp to 2,400,000 coins
Accepted currenciesC$, $, €, £
TypeVideo slot
Special featuresWild, Scatter, Free Spins
Reels and pay lines5 reels. 243 ways to win.
Coins per line1 to 10
Coins size0.01 to 0.1



Immortal Romance features plenty of opportunities to get free spins which can be re-triggered. Also, the intricate storyline makes the bonus games even more fun.

Where to play Immortal Romance?

We recommend playing Immortal Romance at Luxury Casino. In total, you can claim up to $1000 in welcome bonuses. Furthermore, the loyalty program gives you bonus points on every bet made. All in all, this online casino is one of the most lucrative for playing video slots.

Payout (RTP)96.86%
Max jackpot12 000 X
Accepted currenciesC$, $, €, £
TypeVideo slot
Reels and pay lines5 reels. 243 ways to win.
Range of bet0.3 to 6
Coin levels1 to 10
Coins size0.01 – 0.02
Jackpots60 000 coins



Beautiful Bones is a superbly-crafted online video slot based around the Day of the Dead. It’s driven by five vibrant reels with 3 rows and features 243 ways to win. The game boasts several thrilling bonus features including a wild spin again feature, wild symbols, a free spin feature, multipliers, and scatter symbols along with a 1,000-coin jackpot prize.

Where to play Beautiful Bones?

We recommend playing Beautiful Bones on Casino Action. In total, you can enjoy $1250 in welcome bonuses. Casino Action has an extensive catalog of slot machines. Slots fans have access to video slots with a high return to player.

Payout (RTP)96.65%
Max jackpot C$ 15 000
Accepted currenciesC$, $, €, £
TypeVideo slot
Reels and pay lines5 reels. 243 ways to win.
Coins per Line1 to 10
Coin levels0.01 to 0.1



Mega Moolah - the online slot with the biggest mega jackpot

Mega Moolah, the online progressive slot with the biggest mega jackpot out of any online casino. The 25 pay lines of this slot machine win one of the four progressive Mega Moolah jackpots. When a player wins a Mega Jackpot over a million, the pot reboots to one million straight away. This game is so popular that the mega jackpot is sometimes won twice in one day!

Where to play Mega Moolah?

We recommend playing Mega Moolah at Zodiac Casino. With just a $1 deposit, you’ll receive 80 spins on Mega Money Wheel. After that, there are $480 in additional bonuses up for grabs.

Payout (RTP)88.12%
Max jackpot+1 million
Accepted currenciesC$, $, €, £
TypeProgressive slot
Reels and pay lines5 reels. 25 paylines.
Range of bet0.25 – 6.25
Coin levels0.01, 0.02, 0.05


RTP – return per player

Slot machines are programmed to pay out 80% to 97% of the money wagered by players as winnings. This is known as the RTP (return to player). Established by law or regulations, the minimum payout percentage varies among jurisdictions. Casinos always keep a fraction of every bet put down by players on the slot machines. So, as a player, choosing a casino and a slot which give the highest RTP is crucial. In this guide, we’ve studied and tested the best online slots – in other words, the ones that pay the most. Of course, the five online slots featured on this page are amongst the best, but they are subject to change at any time. If we come across a slot machine that pays better, we’ll update the page to reflect this. Nowadays, the five slot machines Thunderstruck 2, Hot Ink, Immortal Romance, Beautiful Bones and Mega Moolah are the best choices if you’re looking for huge returns. As a bonus, they give you the chance to win big too.

Sign-up for slot machine bonuses

Never underestimate the importance of a free welcome bonus. Also, membership programs can offer benefits that dramatically enhance then fun and potential winnings. So, take advantage of all the options available! If you favor welcome bonuses and loyalty programs, a glance at our top free bonuses at online casinos page will give you a chance to boost your bankroll. Before jumping on an offer thinking you’ll get the biggest bonuses available today, remember that some offers are more profitable on slot machines than on table games. That’s why we’ve recommended the best offers for online slots on this page.