Whilst many people decide which slot to play based on the theme, special features or promotional offers, the savvy gamblers steer towards slots with the highest RTP. The house edge of online slot machines can vary widely, and it stands to reason that the lower the house edge, the better your chances of winning.
| Top RTP Slots | RTP | Bet Limits | Free Spins | Paylines | Rows | Reels |
|---|---|---|---|---|---|---|
| Jack Hammer 2 | 97.10% | £0.50 – £250 | 10-20 | 99 | 3 | 15 |
| Simsalabim | 97.50% | £0.25 – £125 | Yes | 25 | 3 | 5 |
| Retro Reels Extreme Heat | 97.50% | £0.30 – £112.50 | Up to 20 | 30 | 3 | 5 |
| Devil’s Delight | 97.60% | £0.20 – £40 | Yes | 20 | 3 | 5 |
| Kings of Chicago | 97.80% | £0.05 – £50 | Up to 30 | 5 | 3 | 5 |
| Starmania | 97.87% | £0.10 – £20 | 10 | 10 | 3 | 5 |
| Blood Suckers | 98.00% | £0.25 – £50 | 10 | 25 | 3 | 5 |
| 1429 Uncharted Seas | 98.60% | £0.10 – £100 | 25 | 50 | 3 | 5 |
| Jackpot 6000 | 95.10 – 98.90% | £1 – £2 | No | 5 | 3 | 3 |
| Mega Joker | 99% | £1 – £5 | No | 5 | 3 | 3 |
Of course, you should keep in mind that only the best slot sites to win offer high payout games from which you can take advantage. The return to player percentage of a game is measured over thousands of game rounds, and it stands to reason that the higher the RTP, the better the deal for the player. With this in mind, I have decided to create a list of the 10 online slots with the highest RTP.
#10 Jack Hammer 2 (NetEnt) – 97.1% RTP
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Jack Hammer 2 is the first of many NetEnt slots to make this top 10 list. This entertaining slot has a crime and adventure theme, captured in a comic book style. There are an impressive 99 bet lines in this game, providing plenty of opportunities to win. It also boasts a variety of interesting features that make the game exciting to play, whilst creating chances to win. The Sticky Win feature sees any winning symbol combinations held in place for a free re-spin, and they continue until no new wins are created. There is also a free spin feature, where you get up to 20 free plays, where all wins are doubled and extra wilds randomly land on the reels. Jack Hammer 2 has a player-friendly RTP of 97.1%
#9 Simsalabim (NetEnt) – 97.5% RTP
This magical themed slot recreates all the excitement of a magic show. The stage is set, with symbols such as a magician’s wand and top hat, a caged dove and a Houdini-style chained chest. The hypnotist is wild, helping to complete winning symbol combinations. When you play Simsalabim, keep your eyes peeled for 3 bunny rabbit symbols on the first 3 reels. These trigger the bonus game, where you pull rabbits from the hats to reveal cash prizes of up to 50500 coins. The slot also features a free spins round, which provides the potential for big wins thanks to the triple payouts. All these features combine to provide a great RTP of 97.5%.
#8 Retro Reels Extreme Heat (Microgaming) – 97.5% RTP
The RTP of 97.5% is one of the highest you will find in the Microgaming slots selection.Retro Reels Extreme Heat has an old-school feel, with symbols you’d expect to see on a classic fruit machine, including cherries, lemons, bells, bars and 7’s. At the same time as providing a retro feel, it includes many features which you’d expect from a modern video slot. There is a free spin bonus, where you can get up to 20 free plays with all wins doubled. There are also wild substitutions and scatter pays. A highlight is the innovative re-spin feature. After any spin, you can choose to spin just one reel, which allows increased chances of winning.
#7 Devil’s Delight (NetEnt) – 97.6% RTP
Unleash your inner devil in this NetEnt video slot. Set against a fiery backdrop and tombstones, the 5 reels are filled with symbols from the underworld.Devil’s Delight is packed full of exciting features that provide plenty of chances to stack up the wins. The devil wild expands to cover entire reels. Whilst the free spins bonus features win multipliers of up to x5. Yet the real highlight of the game is the unique Soul Reaper bonus game. Match the correct sin to each character their soul will be added to the Soul-O-Meter whilst you reap a coin prize. When the Soul-O-Meter is filled with 15 souls, the Sin Spins feature is activated. Here, you get 10 Sin Spins where you can pocket some juicy rewards. With so many cool features and a high RTP of 97.6%, this is one hell of a slot!
#6 Kings of Chicago (NetEnt) – 97.8% RTP
Kings of Chicago mixes the best elements of a video slot with classic poker. The game is played with a deck of cards, which is shuffled before each round. Unlike normal slot machines, where payouts are made for matching symbols across paylines, in this slot, you win if you have a poker hand on one of the five paylines. The game includes a joker, which substitutes for all cards. Plus, the scatter label can randomly appear on any card. Get 3 or more and free deals, the equivalent of free spins are triggered. You can bag up to 30 free deals in the special feature and all wins are doubled. This innovative slot machine provides a unique twist on what you expect from a video slot, and boasts an impressive RTP of 97.8%.
#5 Starmania (NextGen) – 97.87% RTP
With colourful star symbols set against a pretty outer space background and a spacey, ethereal soundtrack, this NextGen slot is a real treat for the senses. Wilds are stacked onto the reels boosting your shot at winning combinations. There is also a free games feature, where extra stacked wilds can help create some big wins. The game features 10 paylines and wins are paid in both directions. With every line win, you also have the option to gamble your prize, for a chance to double or even quadruple your win multiple times. The great graphics, exciting features and favourable RTP of 97.87% make Starmania a real hit with players.
#4 Blood Suckers (NetEnt) – 98% RTP
The vampire genre has never been more popular, and it is the inspiration for this spooky NetEnt slot. You’ll see various Blood Suckers adorning the reels, along with the weapons to fight them off. It is not merely the impressive 98% RTP that draws players to this slot, but also the rich selection of special features. There are wild substitutions, scatter pays, free spins with triple payouts and a vampire slaying bonus game. Trigger the bonus and you will find yourself in an ancient burial chamber, filled with coffins. Open the coffins to slay vampires, earning coin wins with each creature you defeat.
#3 1429 Uncharted Seas (Thunderkick) – 98.6% RTP
This video slot from Thunderkick is visually stunning. The reels are replaced with a medieval style hand-drawn map and the symbols include a variety of sea creatures and beasts as well as sun, moon and star symbols. The slot includes a wild symbol which expands to cover entire reels, helping to create bigger wins. There is also a free spins bonus where you can earn up to 50 free goes. 1429 Unchartered Seas has a rewarding RTP of 98.6%, one of the highest you will find in a video slot, making it a popular choice with players.
#2 Jackpot 6000 (NetEnt) – Up to 98.8% RTP
Jackpot 6000 is a thrilling classic slot machine from NetEnt with a real old-school vibe. You can play with up to 5 paylines active, betting between 1 and 10 coins per spin. It is highly recommended to play with the maximum bet of 10 coins however, as this creates the possibility of triggering Supermeter mode. In this game mode, you can win a mystery prize of between 10 – 6000 coins when just 2 joker symbols land anywhere on the reels. Also, getting 3 jokers on a payline in Supermeter mode guarantees a jackpot payout of 6000 coins. When you play Jackpot 6000 with 1 – 8 coins, the RTP is a paltry 74.9% – 79.2%. Yet with 10 coins in play, the RTP ranges from 95.1% – 98.8%. The variance is because Supermeter mode is skill based, so you can directly impact the outcome.
#1 Mega Joker (NetEnt) – Up to 99% RTP
Whilst Jackpot 6000 boasts an extremely high RTP, it is just beaten to the top spot by another NetEnt classic slot; Mega Joker. Bet with just 1 coin and the RTP is an underwhelming 76.9%. Yet on the other hand, a max bet of 10 coins elevates the RTP to between 89.1% – 99%. Furthermore, it provides bigger payouts and the Supermeter mode. In Supermeter mode, you need to choose the bet level and the optimum level at which to collect your winnings. It is this element of skill which can increase the RTP. The skill component, retro style and engaging gameplay make Mega Joker a firm favourite with players.
Frequently Asked Questions
Because our goal is to keep you well informed we have put together a list of the most frequently asked questions and our team of experts has provided the answers below.
🏆 What are the best paying slots?
The best paying slots are the ones that feature a high RTP because that translates to a small house edge such as NetEnt’s Jack Hammer 2 slot or Simsalabim, with a return to player percentage of over 97%.
✍ How do I choose a good slot machine?
In choosing a good slot machine a player should look for high payouts, volatility and the features of the game itself. For example, you are bound to have a higher return on your investment while playing a slot with free spins and multipliers.
💱 What is the average payout on slot machines?
The average payout on slot machine varies among slots but you are going to find a higher return-to-player percentage in the recommended online casinos as compared to the traditional slot machines. Blood Suckers slot and 1429 Uncharted Seas slot have a very high RTP of over 98%.
🎰 What is a high variance slot machine?
High variance slots are destined for gamblers who are willing to play for huge wins.Kings of Chicago is a great example in that direction because it features not only a high RTP but also a high variance, which makes it ideal for our example. Flexible betting limits, free spins and a unique twist on slots as we know them are just a few perks of enjoying this title.
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Latest posts
View all postsI’m planning to include some reviews of various gambling machines here soon, so I thought I’d start with a look at some of the slot machine manufacturers and their products. There was a time, not long ago, when such a list would be short. But with the advent of internet casinos, the list of slot machine companies grows longer every day.
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Of course, depending on where you live, you might be searching for such information using a phrase like “fruit machine suppliers” or “gaming companies.” Such a list should (and does) include old slot machine brands like IGT (International Game Technologies) and internet casino software vendors like Microgaming and Playtech.
As I create more posts about related subjects, I’ll update this page with links to manufacturer-specific lists of games and reviews of their overall offerings.
I know that a lot of sites in this space try to offer as complete a resource as possible, but please remember that I’m just one guy with a blog. I don’t have an army of freelance writers working for me, and even if I did, there are so many slot machine games from so many different providers that it would be almost impossible to keep up with them all.
But if I’ve left out your favorite slot machine manufacturer, let me know in the comments, and I’ll add it to the list.
Slot Machine Manufacturers List – Updated 2020
And here’s the list of slot machine manufacturers:
1. Ainsworth Game Technology
Ainsworth Game Technology is one of the oldest companies on my list of slot machine manufacturers. They’ve been in business for 20+ years. Ainsworth is an Australian company, and if you know anything about gambling in Australia, you know how popular slots are there. They call them “pokies,” though, which is an abbreviation for “poker machines.”
And some of Ainsworth’s most recent game additions include:
- Action Dragons
- Big Hit Bonanza
- Pac-Man Wild Edition
2. Amatic Industries
Amatic Industries has been in business for over a quarter of a century now. Besides slot machines, they make video lottery terminals and video roulette games. They have a huge selection of slot machine brands in their stable, too, including some of the following:
- Games Bond (Yes, this is a “James Bond” knockoff.)
- GrandX (A “Wheel of Fortune” lookalike.)
- Vampires (A simple enough theme and title, no?)
3. Amaya Gaming
Amaya Gaming is defunct now. It’s part of The Stars Group, the company which owns PokerStars. I include it here under its original name because I think some online users still look for games from Amaya Gaming. They offer lots of cute games, including:
- Barn Yard Boogie
- Jenga
- Street Fighter II
4. Aristocrat Gaming Technology
Aristocrat Gaming Technology is another Australian “poker machine” vendor. They’e recently gotten their hands on some major intellectual property, too, and they offer games like:
- Batman Classic TV Series
- The Big Bang Theory
- Britney
- Game of Thrones
- Sons of Anarchy
- The Walking Dead
5. Ash Gaming
Ash Gaming used to be a big deal, now they’re a part of Playtech. As part of that group, they have extensive licensed properties to create games about. Their most famous, though, is probably Who Wants to Be a Millionaire.
6. Bally Technologies
Bally Technologies is now a subsidiary of SG Gaming (Scientific Games). The company has been around forever. Not only do they make slot machines, but they used to be one of the biggest pinball machine companies in the world, too. Some of their most well-known brands include:
- James Bond
- Monopoly
- Willy Wonka
7. Barcrest Gaming
Barcrest Gaming–like Bally Technologies– is also now a subsidiary of SG Gaming (Scientific Games). If you’re a real slot machine aficionado, you might recognize the names of some of their games:
- Deja Vu Diamonds
- Flippin’ Out
- Psycho Cash Beast
8. Betsoft Gaming
Betsoft Gaming specializes in online gambling games, especially mobile friendly slots and 3D games. Here are some of their titles:
- Dragon Kings
- The Golden Owl of Athena
- Ogre Empire (which has a suspicious resemblance to the movie Shrek)
9. Blueprint Gaming
Blueprint Gaming is based in the United Kingdom. Most of their fruit machines can be found on casino floors there or in Germany and Italy. Here’s a sample of their titles:
- Fairy Fortunes
- Slots o’ Gold
- Wild Antics
10. Cadillac Jack
Cadillac Jack was a subsidiary of Amaya Gaming, which is now wholly owned by The Stars Group.
11. EGT Interactive (Euro Games Technology)
EGT Interactive specializes in video slots. You can find a lot of their games at various sports book sites that also offer casino games. They offer over 150 different games, including titles like:
- 40 Ultra Respin
- Crazy Bugs II
- More Like a Diamond
12. Endemol Shine Gaming
Endemol Shine Gaming specializes in both online and brick and mortar gambling games. Some of their best-known properties belong to the licensed television game show genre. Some examples include:
- Deal or No Deal
- MasterChef
- Million Pound Drop
13. Fremantle Media
Fremantle Media is one of the more unusual listings on this page, because they don’t exactly design or manufacture slot machine games. They own several large television brands, which they aggressively promote through multiple channels–including slot machines. If you’re playing one of these slots, Fremantle Media had a lot to do with it:
- American Idol
- Blockbusters
- The X Factor
14. The Gamesys Group
The Gamesys Group does slots and bingo games. Some of the better known brands in their stable include:
- The Godfather
- Guardians of Fire & Ice
- Secrets of the Phoenix
15. Heiwa Corporation
Heiwa Corporation is a publicly-traded Japanese corporation that specializes in pachinko and pachislo machine manufacture.
16. High 5 Games
High 5 Games creates both internet-based and land-based slot machine games, some of which are popular. They use HTML 5 for their online slot machines. Their most famous games include:
- Cats
- Golden Goddess
- Photographing Fairies
17. IGT (International Game Technology)
IGT is far and away the largest slot machine company in the world. They’re everywhere. The most popular gambling machines in the casino are the product of International Game Technology. Just a few of their big names include:
- Family Guy
- Jeopardy
- Siberian Storm
- Wheel of Fortune
18. Konami Gaming
Konami Gaming is the maker of the following slot machines:
- Dungeons and Dragons
- Flaming Red Diamonds
- Year of Best Wishes
19. Mazooma Interactive Games
Mazooma Interactive Games is a UK game company that specializes in online games. They’re now a subsidiary of Novomatic.
20. Microgaming
Microgaming was the first large online casino software provider. They’re best-known for the wide variety of their online progressive jackpots. Some of their most famous brands include:
- Battlestar Galactica
- Halloween
- Playboy
- Terminator 2
I’ve written about Microgaming before, here.
21. NetEnt
NetEnt is another publicly-traded company that specializes in online games. They’re responsible for, among other things, the Jumanji slot machine game.
22. NewGin Co. Ltd.
NewGin Co. Ltd. is another Japanese manufacturer of pachinko and pachislo machines.
23. NextGen Gaming
NextGen Gaming serves both online and land-based casinos. They offer some really cool titles, including:
- King Kong Fury
- Samurai Split
- Wonder Hounds
24. Novomatic Gaming
The name “Novomatic” always reminds me of the Steve Goodman song, Vegematic.
But that song has nothing to do with the company, though. Novomatic Gaming is probably the biggest European slot machine maker there is, in fact.
Some of their games you’ve probably heard of include:
- From Dusk Til Dawn
- Stories of Infinity
- Treasure of Tut
25. Ortiz Gaming
Ortiz Gaming specializes in Class II and Class III slot machines, especially when it comes to bingo technology. And their games are OVERTLY bingo-based, too:
Slot Machine Manufacturers Us
- Allstar Bingo
- Rodeo Bingo
- Multimania
26. Playtech
Playtech is another online game designer and creator, and, like Microgaming, they’re publicly traded. They also don’t allow their licensees to accept real money players from the United States. Some of their better known games include:
- Ace Ventura
- American Dad
- Batman Begins
- Grease
- Justice League
- Pink Panther
- Rocky
27. Realtime Gaming
Realtime Gaming (RTG) is probably the biggest online casino game vendor that still serves U.S. audiences — at least the audiences that don’t live in states with legal, regulated online casinos. (There are 47 states like that.) As a result, you’ve probably never heard of most of their games unless you’re a devoted internet gambler.
My favorite of their games is It’s Good to Be Bad, but I’m old school.
28. SG Gaming (Scientific Games)
Scientific Games is headquartered in Las Vegas. They own Bally now, and they own Shuffle Master. And they also own WMS Gaming. Their most well-known game is probably Monopoly slot machines.
29. Universal Entertainment Corporation
Top 5 Slot Machine Manufacturers In Usa United States
Universal Entertainment Corporation is another pachinko and pachislo manufacturer.
30. VGT (Video Gaming Technologies) – One of My Favorite Slot Machine Manufacturers
VGT is one of the biggest names in the Oklahoma gambling market, and they specialize in bingo-based slot machine games.
31. WMS Gaming
WMS Gaming is now a subsidiary of Scientific Games. So see that entry above.
32. Apollo Games (just added!)
Largest Slot Machine Manufacturer
Apollo Games has a full profile on our site. Click the link for full details.
The Final Word about Slot Machine Manufacturers
The brand names in the slot machine manufacturers category are many, but, of course, IGT (International Game Technology) towers above the rest like Walmart towers over other retail establishments. The list above gets longer when you account for the companies making online slot machine games, too.
Slot Machine Manufacturers Association
If you have any comments about the games available from these corporations, I’d enjoy hearing them. I’m human and make mistakes, so if you leave a comment pointing one out, I’ll update this post with corrections (and probably even give you credit.)