King of Slots
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King of Slots Slot Machine

Self-proclaimed slots royalty, King of Slots is a three row game with 25 pre-set paylines and an innovative 15 independent reels. As well as that interesting reel configuration, the slot offers a theoretical return to player percentage of 97.0% and a number of exciting features. They include Sticky Wins, Free Spins and Wild Substitutions which can all nicely boost a player’s winnings.

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King of Slots Review

Game info

Payout %:97
Pay Lines:25
Max Win:750,000
Scatter:Pink Stones
Wild:Blue Stone
Our Rating:4.9 / 5

A slot that calls itself the King of Slots has plenty to live up to, and to find out whether this game does so, all you need to do is to read on. We’ve taken a close look at all the key aspects of the game and compiled a review covering its top jackpot, special symbols, paytable details and betting limits.

Top Jackpot

With its 15 independent reels and Sticky Wins feature, King of Slots really does provide great opportunities for players to win big. The most valuable symbol within the game is the crown symbol and this pays out at a rate of 1000 times the bet level if five of them line up along a payline.

At the highest bet level of ten then, that can result in a payout equalling 10,000 coins for one payline and that can then be enhanced to 30,000 coins if the combination is achieved during free spins – when all winnings are multiplied by three. In the event that all 15 reels display the same crown symbol after a free spin, therefore, the top jackpot of a full 750,000 coins (30,000 x 25 paylines) can be won. At the highest coin value of £1, that jackpot is worth a gargantuan £750,000 to a lucky player who wins it.

Special Symbols

King of Slots twins two special symbols with its unique reel configuration to create the game’s additional features.

Wild Symbol – a traditional Wild symbol is the first of these, and that symbol substitutes for all other symbols apart from Scatters and always goes towards creating the most valuable combination possible for a winning payline.

Scatter – the second and more notable special symbol is the Scatter symbol and in King of Slots, that symbol has two distinct functions. If three or more are displayed after a spin, the game’s ‘Sticky Win’ function is triggered and any winning symbols are held whilst all other reels are re-spun. This function is also triggered whenever a winning combination is achieved and reels will keep re-spinning until no new wins are generated.

If five or more Scatter symbols appear, meanwhile, this activates the game’s free spins – with the exact number of free spins awarded dependent upon the number of Scatters, as set out in the game’s paytable. All free spins are played at the same bet level and coin value as the spin which triggered them, and all winnings from free spins are automatically multiplied by three.


All of the symbols on the King of Slots reels have a regal theme and the most valuable of all is the gold crown symbol. Five of these lining up along a payline results in winnings equal to 1000 times the bet level. As described above, therefore, that can result in a jackpot of 30,000 coins per payline during free spins and a total jackpot of 750,000 coins if all 25 paylines display the same combination.

The second most valuable symbol within the game is the watermelon gemstone symbol, which pays at a rate of 300 times the bet level for a full set of five. At bet level ten and during free spins, that combination can result in a payout of 9000 coins per payline and a total of 225,000 coins if all 25 paylines display the same combination.

Betting Limits

The 25 paylines of King of Slots are pre-set and cannot be adjusted, but players can control the amount they bet per spin by setting both the value of coins bet and the number of coins bet per payline.

There are seven coin values to choose from between 1p and £1, and ten bet levels from 1-10 which each add one further coin per payline. The minimum stake for King of Slots, therefore, equals 25p if bet level one and coin value 1p is selected and the maximum equals £250 if bet level ten and coin value £1 is chosen.

What We Think

The game describes itself as the King of Slots and there are very few grounds for argument. When it comes to potential jackpot amounts, level of betting control and lucrative extra features, this game really is second to none.

A top jackpot amount potentially worth £750,000 is unquestionably one of the biggest around and would even put many progressive jackpots in the shade. Even if they don’t win that big one, however, players can still benefit from really nice payouts thanks to the game’s wild substitutions, Sticky Wins feature and x 3 multiplier for free spins.

When it comes to betting control too, King of Slots’ ten bet levels and seven coin values give players as much power over their stakes as they could possibly want. The only possible weakness of this slot then, could be that the actual gameplay can be described as slightly simplistic and repetitive, as there are no bonus games or features. With such good payout possibilities, however, few players are likely to mind too much.

This game has a rating of 5 / 5 with 678 total reviews by .

Author Info

Written by: Sam Jones

Sam is an author here at with her specialty firmly lying in slot and casino reviews (she does have a wealth of experience after all) - more info about our team...