What Slot Machine Has The Best Odds? (High RTP Slots)

By Alex Smith, Last updated Mar 23, 2024

Today, there are more slot machines available to play than ever before. Some sources say more than 15,000 video slots are available to play online. Of course, choosing the right one to get the best odds can be pretty challenging with so many different games available.

If you’re looking to find online slots capable of producing big wins and offering you decent long-term gameplay, then it’s essential to choose a game that offers a high RTP. RTP – return to player – determines the amount of money the slot machine is expected to pay out over its shelf life.

For example, a video slot with an RTP of 95% would be expected to return 95% of the wagers to players. For example, for every $100 wagered on the slot, the casino could expect to make five dollars in profit. The remaining $95 will be distributed back to players.

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See Related: 10 Slots That Really Can Pay 10,000X Your Stake

Of course, the return to player percentage is calculated over billions or even trillions of spins, so there are no guarantees that they will remain faithful in the short run. However, in the long run, most slot machines will average out, and strict legislation by various online gambling jurisdictions ensures that payout percentages are genuine and honest.

This page will look at what slot machines have the best odds. We will look at some of the old classics alongside some of the newer, more modern releases. This will include progressive jackpots with a high payout percentage, slot games found at ALL online casinos, slot games that no longer exist – and even slot games you’ll find in brick-and-mortar casinos!

See Related: How To Find A Slot Machine That Is About To Hit

Mega Joker – NetEnt – The Best Slot Machine Odds

Almost a decade old, Mega Joker from NetEnt has been regarded as one of the highest return-to-player slots ever released. NetEnt is a Swedish-based game developer responsible for producing some of the most popular and renowned video slots in history. This includes Dead or Alive II, Dead or Alive II, and Creature from the Black Lagoon.

What makes Mega Joker so unique is that it boasts an RTP, which can increase to as much as 99%. This means that the casino’s house edge is shallow, although we should point out that you do need to play the game correctly to achieve this maximum RTP. To do so, you must make sure you are betting at the maximum coin amount.

Interestingly, Mega Joker is one of the most basic, simplistic-looking games NetEnt has ever produced. It is developed around a three-reel, three-row format, and it resembles the type of slot machine you would find in arcades and pubs.

During the base game, you will be looking to form any wins. You will be taken to a particular super meter round when you do. This is where the game’s real win-potential kicks in, and not only do you have the chance to exchange your current win for a chance at playing slots with a higher-priced payout table, but you also have a chance of scooping the game’s progressive jackpot.

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Jackpot 6000 – More NetEnt Slot Machines

Second, on our list is another video slot from NetEnt – Jackpot 6000. Jackpot 6000 is yet another very high RTP slot machine. Again, like Mega Joker, it features more of a classic look and feels than a conventional modern-day video slot you may be familiar with.

Despite its age, Jackpot 6000 is available to play at many online casinos, although it is not as popular as it once was. This is because it was initially developed in Flash, and after NetEnt started to port their games over to HTML5, some of their older titles got left behind.

Jackpot 6000 is built around a three-row, three-reel format, and the maximum wager is just two dollars. The game can produce some pretty decent-sized wins, and the minimum RTP is 95.10%. However, when played correctly, the RTP can increase to as high as 98.90% – meaning the casino has a house edge of just over 1%.

Unfortunately, Jackpot 6000 does not offer a conventional free spins feature – but there are a couple of bonuses within the game, allowing you to reach semi-decent-sized wins.

Ooh Aah Dracula – Barcrest

Ooh Aah Dracula is an absolute classic, and it was developed by a British software developer called Barcrest. If you have ever set foot in a bookie in the UK, there’s a good chance you would have seen the game on offer – and it was one of the most popular games found on the notorious fixed odds betting terminals.

The game is themed around Dracula, and it combines him with Halloween-esque sound effects and animations to create a haunting experience. It’s fair to say that the regular base game doesn’t offer anything overly special, and the RTP during the base game can be as low as 94%. However, if you play the “Big Bet” spins, the RTP increases to as high as 99% – and there is also significantly more win potential here.

The base game doesn’t offer anything inspiring. The leading free spins bonus round is where the action takes place, and this is triggered by landing three, four, or five of the scatter symbols anywhere in view. Once triggered, you will be given a choice of three bonus features. This will award you 15, 10, or five free spins.

If you choose to 15 free spins option, one symbol is chosen to be wild for the duration of the spins. If you select the ten free spins option, two symbols are wild, and if you choose the most volatile – the five free spins feature – three symbols will be transformed into wild symbols for the bonus duration.

If you are playing the “Big Bet” option, once the free spins have finished, you will also get to choose one of five gravestones. This awards a payout of between 10 and 50 times your total stake.

Blood Suckers – NetEnt

Blood Suckers is one of the most well-known video slots in the world – although its popularity does not stem from the fact it is a great game, but rather from the fact that it offers such a high RTP. The RTP is so high that many casinos banned players from playing the game if they used a casino bonus.

The RTP of Blood Suckers is a healthy 98% – and, like two of the games we looked at on this page, it was developed by the Swedish online gambling giant NetEnt. Blood Suckers features two different bonus rounds. Firstly, you have the main feature, which is a free spin round. This is triggered by landing three, four, or five scatter symbols anywhere in view. During the free spins round, any wins you manage to form are multiplied by three. It is also possible to re-trigger the free spins feature by landing additional scatter symbols in view.

In addition to the free spins round, Blood Suckers also offers a “pick me bonus.” This is triggered by landing three bonus symbols on the first three reels. You will then be taken to a brand-new screen where you’ll see several coffins. Your job is to pick from these coffins, and each pick will reveal a random cash prize.

You get to continue picking until you reveal the skeleton, at which point the bonus feature ends, and you will be returned to the main base game. Blood Suckers proved to be such a popular game for NetEnt that in 2020 they released a sequel – Blood Suckers II.

1429 Uncharted Seas – Thunderkick

1429 Uncharted Seas is the first video slot on this list from Thunderkick – a game developer known for their low variance creations. However, Thunderkick games have a unique twist to them, and they are well-loved by players all around the world. Usually, these games feature relatively high RTPs – which can certainly be said for 1429 Uncharted Seas, as it offers an RTP of 98.6%.

Like Blood Suckers, 1429 Uncharted Seas was banned by many casinos for players using bonus funds. This is because the RTP is so high. The graphics in 1429 Uncharted Seas are breathtaking, and the game is designed to look as though you are playing on an adventurer’s map. It is a unique concept, and it works incredibly well.

Like many games on this list, the base game doesn’t offer anything too exciting. Most of the win potential is locked up within the bonus round, which is triggered by landing three, four, or five of the scatter symbols anywhere in view. If you land five scatter symbols, you will win 50 free spins.

All wild symbols transform into expanding wilds during the free spins. Any wilds in view will expand to fill the entire reel. Theoretically, it is possible to land a full screen of wilds, which would then expand into wild reels – giving you a full screen of wild symbols.

One thing that makes 1429 Uncharted Seas so unique is that despite the high RTP, there is some decent win potential. 

Starmina – NextGen Gaming

Starmania is a video slot from a game developer called NextGen Gaming. They are not the most well-known software provider in the world, but they have had a few notable hits – including 300 Shields. The video slot offers an above-average RTP of 97.87%, making it an excellent choice for players looking for decent gameplay.

Starmania is built around a five-reel, three-row format, with ten fixed paylines on every spin. Unfortunately, it is impossible to adjust the number of paylines as they are fixed. While different casinos can choose to set different bet limits, most sites allow you to play Star Mania from as little as $0.10 per spin and as much as $100 per spin.

The game is designed in outer space, and all of the symbols are designed to represent different stars. As I am becoming quite familiar with the games on this list, the base game isn’t overly exciting, but there is a pretty exciting free spins feature. This is triggered by landing three, four, or five scatter symbols anywhere in view. Regardless of how many scatter symbols, you land.

Unfortunately, the free spins aren’t anything different – they are, simply, free games. However, it is possible to re-trigger the free spins feature, and once the bonus has concluded, you will be given the option to gamble your winnings if you want.

White Rabbit Megaways

Big Time Gaming is a casino game developer that changed the course of online gambling forever. Their iconic Megaways mechanic – first seen in Dragon Born, but popularized in Bonanza Megaways – has completely changed the face of online gambling. Today, hundreds of Megaways games are available to play, and players are increasingly searching for high-variance video slots to play, thanks to the impact that the Megaways mechanic started.

White Rabbit Megaways is a unique video slot from Big Time Gaming that offers an RTP of 97.77%. Not only is this the highest RTP slot Big Time Gaming has released, but it’s also one of the world’s best. As the name suggests, White Rabbit Megaways is inspired by Alice in Wonderland, and there is a fantastic Down the Rabbit Hole free spins feature.

During the free spins, landing a cupcake symbol on any reel will expand that reel, and it’s possible to expand the reels to 12-high. If you unlock all six reels like this, you will enjoy 248,832-ways-to-win.

White Rabbit Megaways also has a unique base game feature; random multiplier wilds can be added to the reels at any time during the base game. You can win thousands of times your stake if you get two or three of these multiplier wilds lined up in the correct position.

White Rabbit Megaways also contains a bonus buy option. This allows you to purchase direct entry to the free spins feature for 100X your stake. Please note that UK players are no longer able to purchase bonus buys due to restrictions put in place by the U.K.’s Gambling Commission.

Kings of Chicago – NetEnt

You may have begun to notice a trend by now; many of the games on this list are produced by NetEnt, and, in the past, they were renowned for their high-RTP games. Unfortunately, in today’s competitive online gambling world, NetEnt has had no choice but to lower the RTPs of their slots to keep up with demand and ensure that casinos can continue to profit from hosting the games.

Kings of Chicago is one of their most notable releases, and playing cards represent the symbols on the reels. The game is designed to make the player feel as though they are sitting at a poker casino table – and it’s an exciting concept that works pretty well, in our opinion. The RTP of Kings of Chicago is 97.8%, so it’s a perfect game for those players looking for higher RTP slots.

The game is built around a five-reel, three-row format, with five fixed paylines in play at all times. The main bonus feature is a free spin round, although they are known as free hands in the game. The bonus is triggered by landing three or more of the scatter symbols anywhere in view, and you will win between 10 and 50 free games depending on how many scatter symbols you landed.

During the free rounds, all wins are multiplied by 2X, and even though the game has such a high RTP, it’s possible to hit some pretty nice wins during the bonus.

Retro Reels Extreme Heat – Microgaming

Retro Reels Extreme Heat is the only video slot from Microgaming to appear on this list. It’s one of the developer’s older games. It was launched well before the company fell from grace by partnering up with smaller, less professional game studios that continue to produce games with virtually no actual players.

Unfortunately, since the flash was phased out, Retro Reels Extreme Heat appears nearly impossible to find online. Some downloadable Microgaming casinos still offer it, but conventional HTML5-based online casinos do not appear to carry the title. That’s a shame, as the game was great fun and featured an RTP of 97.5%.

Retro Reels Extreme Heat was built around a five-reel, three-row format with 30 fixed paylines. The main attraction of Retro Reels Extreme Heat was the re-spin feature. This allows you to re-spin one or more of the reels for an additional cost.

The leading free spins bonus is triggered by landing three or more scatter symbols anywhere in view, and during the free spins, all wins are multiplied by 2X. The free spins feature can also be re-triggered by landing another three or more scatter symbols during the bonus – but, unfortunately, that’s pretty much all there was to the game. It didn’t offer anything overly exciting.

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Jack Hammer 2: Fishy Business

Jack Hammer 2: Fishy Business is yet another video slot from NetEnt, and while it’s an ancient game, it remains one of the developer’s most popular releases thanks to its creative layout, fun gameplay, and decent win-potential. It also helps that the RTP is high – 97.1% – and the game is renowned for offering players great playtime. The bonus feature is also relatively easy to trigger, meaning you do not usually have to wait around long to trigger the free spins.

Jack Hammer Two: Fishy Business features a ton of bonuses, and the first is present within the base game. Each time you form a win, the symbols involved with that win lock into place. A re-spin is then awarded, and any new winning symbols also lock into place. A further re-spin is awarded, and this process continues until you fill the screen or fail to land any new winning symbols.

The free spins bonus is triggered by landing five or more scatter symbols. You can win between 10 and 30 free spins; during the free spins, one wild symbol will be placed on the reels for each spin. All wins you manage to form within the free spins round are also multiplied by 2X, and the free spins can be re-triggered if you land another five or more scatter symbols during the feature.

One thing that makes the game unique is that despite its low volatility and high RTP, some vast wins can be formed. If you lock in the Jack Hammer symbol himself – the green man wearing the gangster-looking bowl – you can win your stake hundreds or thousands of times. The other premium symbols are also capable of paying nicely, although it’s pretty rare to lock them across the screen.

Monopoly: The Big Event

Monopoly: The Big Event is the second video slot from Barcrest on this list. It’s also one of their most successful releases in history, and it can be found at thousands of online and land-based casinos – and it’s also available on fixed odds betting terminals in the UK.

Like the other Barcrest game we looked at earlier, Monopoly: The Big Event has two different RTP settings. The RTP can be as low as 94% during the base game. However, if you play the Big Bet option – for $30 per round – the RTP increases up to 99%.

If you choose to play the Big Bet option, you will get to spin the wheel. This will award you either direct entry to the free spin bonus or five free spins with a progressive multiplier.

It’s fair to say that Monopoly: The Big Event is all about the free spins bonus. During the free spins, you can choose one of three different options. The most valuable is the locking wilds feature and any wilds that land in view lock in place. If you land one of the jail symbols, one of the lower-paying symbols will also be removed from the reels. If you are lucky enough to enter the free spins feature with a multiplier, you can hit some crazy wins – and there are videos online of players hitting many thousands of times their stake.

Which Online Casinos Offer the Best Slot Machines with High Odds?

Thankfully, finding the high RTP video slots to play we have just looked at is generally pretty easy. Today, most casinos offer games from tens of different software providers. This is a stark change from when Microgaming or NetEnt-specific casinos were commonplace in the day.

However, if you are looking for a new online casino to play out, it can be hard to know which sites are safe and which should be avoided. Here at Casinomeister, our team of online gambling experts works round the clock to review and analyze new and old casinos. 

If you want to check out a reputable casino to play these games, we strongly recommend checking out our accredited casino’s page. All of these casinos have been hand-picked by our team of online gambling experts, and they all offer a great selection of games, fast cashouts, and generous bonuses and promotions.

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Remember, slot machines pay what they want to pay; there is no such thing as a winning slot machine or a winning slot game. Slot machine odds are FIXED – so, when you play slots, the payout percentage doesn’t change (for the most part.) Today, all online casinos and slot machines are heavily regulated. This means that regardless of whether you’re playing penny slots (penny slots are rare today, by the way), progressive jackpots, or conventional slot machines, the odds don’t change.

When you join an online casino and play casino games, your chances of winning are the same, regardless of what time or day you play slots. Online slots are rigorously tested to ensure that the slot machine odds are fair and that the payout percentage is correct. Brick-and-mortar casinos also are regulated – so the odds of winning from slot machines are always the same and fair.


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