King of Slots
Play at Casumo »
King of Slots
King Of Slots Mobile Slot Logo

King of Slots Slot Review

Mobile Video Slot by NetEnt Play Now at Casumo » More NetEnt Casinos
Min/Max Bet:

How to play King of Slots mobile slot

With sticky wins and a high return to player rate, the King of Slots mobile slot is well deserving of it’s title.

Although technically, it’s title is stolen from another NetEnt game; namely the equally amazing Jack Hammer slot.

Reason being, the King of Slots is actually a copy of Jack Hammer, so if anyone deserves the title, it’s most certainly the original.

That said, it’s such a perfect machine, it’s hard not to fall in love with every spin, even if the theme of the first game was slightly more imaginative.

Chilled out tune, simple graphics, 25 paylines

The music, if we could compare it to anything, would be very much in the spirit of the Twin Spin slot; a bit like what you’d find in a lounge bar as you wait for your friends to arrive.

The tempo picks up a little everytime you get a sticky win, or the free spins, but generally, this is a pretty relaxed affair. In fact, so is the theme. Clearly the designer at NetEntertainment had to dig to the bottom of the idea basket for whatever was leftover.

It’s not bad per say, you get generic 10 to Ace symbols, pretty fruits, a crown, and the King himself; stolen from a cartoon network show.

The King of Slots is still well named

Because, ultimately, who cares? The theme is nice enough, and with the constant action you’ll find on these five reels, you wont care.

This is one of those rare mobile video slots where the wins come often, and fast, and the free spins (though at time elusive) show up often enough that you’ll rarely get bored.

That said, it can be a little tricky, fooling you into thinking you are winning, when really, you are losing slowly. Not to say its not value for money, due to the huge amount of free re-spins you’ll get, just watch out; the King of Slots machine is higher up the variance scale.

Meaning that at any point you might end up winning over 3,000 times your bet, and best of all, you’ll see it coming as each winning symbol stays sticky to the screen, making each mega win all the sweeter.

A near perfect casino game.

Game Screenshots

King of Slots slot stats

Mobile Slot releasedNovember 2015
Slot typeVideo Slot
Slot reels / paylines5 Reels / 25 Paylines
House edge / RTP3% / 97%
Slot volatilityMedium/High
Coins range0.01 -
Min/Max bet0.25 / 250
Max win750,000
Free spinsUp to 30 Free Spins / 3X Multiplier
Bonus roundsSticky Wins, Wilds, Scatters & Free Spins
Slot ThemesGems
Casumo Casino Logo
Casumo Casino provides you with a wide range of casino slots full of bonus features and big win potential. Play huge jackpot slots or enjoy their bonus-filled casino loyalty program. Go take Casumo for a spin with or without their welcome bonus and we bet it won't dissapoint.
Try Casumo Casumo Review
18+ Gamble Responsibly | T&Cs Apply

Bonus Features

Sticky Wins: Whenever 3 or more symbols create a win, they stay 'sticky' on screen, whilst the rest of the symbols re-spins (for free). If another symbol shows up that could create a winning combination, these also stay sticky and you get another re-spin until no more winning symbols show up.

It's how you end up with a screen full of the same symbol and wilds, and 50 to 100 times your bet.

Wild Symbol: Represented by the blue diamond, this symbol replaces all other symbols except scatter.

Scatter and Free Spins: You do need at least 5 scatters to trigger the free spins, but if you get 3 on screen, you start the 'sticky win' feature, making it easier to trigger a whole bunch of free spins.

You usually end up with 10, but we've hit 10 or 20 enough times to know it's not impossible. We've hit 30 and loved it! Especially as you get a 3x multiplier on all the wins.

What's best is that even on 10 free spins, you are talking about more like 15 or 20, as the sticky win feature is more dynamic than ever during these King of Slots bonus games.

  • 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

King of Slots Review Conclusion

Should NetEnt lose a star for re-making Jack Hammer but with a new theme in the King of Slots game? We don't think so. It might not be original, but it's such great mechanics we are grateful we now get two mobile slot machines to play on whenever one isn't paying out.

If you love the features, but fancy a game with easier wins (though not bigger), then you should probably start with the Jack Hammer 2 slot machine.

Ready To Start Spinning?
Casumo Casino Logo
Play at Casumo »
Get 100% Bonus Up To €300 + 20 Free Spins On Book of Dead T&Cs Apply

Play King of Slots Slot at one of our best slot sites

Review by Lucky Mobile Slots, last updated: November 2, 2021 - Rating 5

NetEnt King of Slots Review FAQs

What's the King of Slots RTP?

The theoretical RTP is set at a high 97% across all good NetEnt casinos online.

What's the King of Slots slot volatility?

This is a medium to high variance machine offering up good returns and a mixture of wins.

Can I free play King of Slots on mobile?

Find yourself a good NetEnt slots site like the ones in this slot review and you'll be able to play for free. If you're in the UK you'll have to sign up or login first though.

Back to Top

Ad Disclosure

Here at we are committed to providing you with unbiased slots reviews for free. In order to continue this we have affiliate links on our site from our trusted partners from which we may earn money at no extra cost to you. This helps us keep free for everyone to enjoy.