NetEnt, the online casino software giant behind the groundbreaking Gonzo’s Quest, brought us King of Slots in 2015. Gonzo’s Quest was an original, beautifully animated game that perfectly showcased the potential for online slots. It was a key moment in the development of gaming software.

The King of Slots is not Gonzo. It’s a fun game to play but it’s about as innovative as a Jurassic Park sequel. Released in 2015, the online slot has sat on its throne for nearly a decade – and there’s a reason why. It may not have a perfectly rendered 3D Spanish conquistador at the helm, but it does have a very high return to player of 97%. The graphics may be basic, but the game play is quick and the wins hit hard and fast.

What the King of Slots lacks, in depth and design, it makes up for in both function and game play. NetEnt has scores of heavy hitters in its portfolio. Ironically, this regally-named slot is one of the little guys. Let’s dig in.


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King Of Slots Look and Feel

The King of Slots has a surprisingly utilitarian feel, for an online slot with royal roots. The game starts with the familiar NetEnt logo, followed by a clear overview of the main features: free spins, sticky wins, and wilds. The core gameplay takes place on a standard 5×3 grid with a clean, crisp design. The look and feel is crisp and clean.

At the game’s heart is the titular King of Slots, a cartoonish monarch with a vacant smile and curly moustache. While the character is somewhat comical, the overall colour palette of royal blue and purple on a dark background gives the game a subdued atmosphere.

The game has a minimal feel. With the exception of the cartoon-styled king, it’s fairly sombre stuff. As with nearly every NetEnt game, the controls are well-designed, clearly positioned, and easy-to-use.

King Of Slots - Gameplay
King Of Slots – Gameplay

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The audio is also slightly bizarre. You may have (reasonably) expected some French horns, a choir, and a regal blast of the strings. What you get is a quasi-jazz funk quartet, working the kind of soundtrack you would expect to hear as the backdrop to a trendy airline safety video.

When you hit play, you get the click and roll of the reels, accompanied by a sonic stab when you land a winning combo. If you keep hitting sticky wins, the audio increases in pitch, ending with a brassy flourish. It’s good. But regal? We’re not so sure.

How To Play King Of Slots

The King of Slots may be a visually simple slot machine online, but it packs a punch with its gameplay. The star of the show is undoubtedly the Sticky Win feature. This is where the real excitement lies.

How To Play King Of Slots
How To Play King Of Slots

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With 25 paylines running from left to right, landing three or more matching symbols triggers the Sticky Win bonus. The winning reels are held in place while the others respin. If you’re lucky enough to create new winning combinations, the process repeats, potentially filling the entire grid with winning symbols. It’s a thrilling feature that can lead to substantial payouts.

Beyond the Sticky Win, King of Slots also includes classic elements like wilds and scatters, as well as a bonus game to keep things interesting. While the game’s overall aesthetic might not be groundbreaking, the gameplay is engaging and offers plenty of opportunities to win.

To start playing, simply adjust your bet using the controls on the main screen. Stakes range from a modest 25p to a high-rolling £250 per spin. For those who prefer a hands-off approach, the autoplay function is available (though it might be restricted in certain jurisdictions). If you’re feeling adventurous, you can also activate turbo play for faster spins.

"The King of Slots comes with a pretty royal bonus round of Free Spins with multiplier. In regular game play, you also get to enjoy the delights of a sticky win."

So, now you have your stake set, you can then choose whether you want to take advantage of autoplay which means it will do all the spinning of the reels for you. All you need to do is sit back and let it take care of the gameplay. If you prefer a hands-on approach to playing online slots, then all you need to do is hit the play button and away you go! Once you hit play, the reels will spin, and with a bit of luck, you could be celebrating a royal win in no time.

King Of Slots Symbols

Don’t expect a royal flush of symbols in King of Slots. This online slot keeps it simple with a standard set of icons. The lower-paying symbols are the classic card ranks: 10, Jack, Queen, and Ace. Moving up the paytable, you’ll find golden fruit symbols – cherries, lemons, and watermelons – with the watermelon being the most lucrative of the bunch, offering up to 12 times your line bet for a five-of-a-kind.

The crown jewel of the game is, unsurprisingly, the king’s crown. Landing five of these on a payline will net you a handsome 40 times your total bet. It’s worth noting that King of Slots is generous with its payouts, allowing multiple wins on a single spin.

Of course, no slot would be complete without special symbols. The wild, represented by a large blue emerald, substitutes for all symbols except the scatter. The scatter symbol is a trio of rubies, and landing five or more of these will trigger the exciting Free Spins bonus round.

King Of Slots – Our Verdict

On first appearance, the King of Slots is a rather dated and dull game. However, there is nothing like a little bit of hands-on experience to change a mind. At the end of our testing session, we were all doffing our caps to this regal high roller. It is a simple game but the sticky wild features really adds value.

However: the music is awful. It’s not just the complete disconnect with the game. It’s simply awful in its own right. It’s the kind of bland music that would make a 50/50 suicide jumper take the fast track to the ground floor. It’s so bland, you’ll be reaching for that little known Celine Dion album in search of a rush.

But… music is not really what online slots are about. Hit the mute button and pay your dues to this little royal dude with the big smile.

King Of Slots Bonuses

King of Slots isn’t just about spinning the reels; it’s about unlocking the royal rewards! This NetEnt creation offers players two exciting bonus features designed to boost your winnings.

The first feature to grace the reels is the Sticky Win bonus. This thrilling mechanic can transform a standard spin into a potential jackpot bonanza. On the other side, there is the King of Slots bonus round. To feel like the king of the casino and unlock the King of Slots bonus round, players must land five or more scatter symbols (represented by rubies) anywhere on the reels. This triggers a series of free spins, where the potential for big wins is amplified.

With its combination of sticky wins and free spins, King of Slots delivers a gaming experience fit for a king. Are you ready to claim your crown?

Bonus Name Bonus Explanation
Free Spins

Hit five or more scatters and you activate the Free Spins bonus round. Five scatters are ten spins, six earns you fifteen. Seven scatters get you 20 free spins and eight scatters are worth 25. Top it out with nine or more scatters and you bring home the regal bacon: a whopping great thirty free spins.

  • 5 Scatters = 10 free spins
  • 6 Scatters = 15 free spins
  • 7 Scatters = 20 free spins
  • 8 Scatters = 25 free spins
  • 9 – 15 Scatters = 30 free spins

It gets better. The sticky wild feature plays out during the free spins. We hit 20 spins whilst testing and it took about 15 minutes to play out the bonus round. Also: all wins are tripled. This can really add up. You can also win additional free spins throughout the bonus round.

Sticky Wins

When you unlock this bonus, it will mean that you have landed three or more symbols. So, once you have done this, the wheels will spin again but your winning symbols will remain in place at no cost. Then, if more symbols add to your original winning payline then you win more money! You will then get another spin until you get no further wins.

King of Slots FAQs

Yes, you can play the King of Slots slot for free. This is because you can take advantage of the free demo, enabling you to try the game out first!

There are two bonus features on offer here. The first is sticky wins and the other is free spins, both of which can lead to big prizes.

The RTP of King of Slots is 96.96%

At Casino Kings? Of course there is! There’s Queen of the Castle, Reel King, Reel King Megaways, and Siren’s Kingdom.

About the Author

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Dan

Reviewer since August, 2024

King of Slots Details

👨‍💻 Developer
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📅 Released
2015
✅ Paylines
25
🎰 Reels
5
🔽 Min Bet
1
🔼 Max Bet
10
🔽 Min Coins
0.01
🔼 Max Coins
1
📈 RTP
97%
🏆 Jackpot
750,000
Rate This Game:
(6 Votes)

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