King of Slots Slot Review
Deep teal and magenta velvet drapes frame the reels, a checkered floor runs beneath them, and a bulging-eyed cartoon king leans in from the corner as if he’s about to announce the main act. It’s a theatrical set for a game that, unusually, saves its best tricks for the ordinary spins rather than the big round. Even a pair of cherries can lock its reels and set the rest re-spinning for a free shot at something bigger.
Behind the curtain, NetEnt have built a compact old-school proposition: a 5×3 grid, 25 fixed paylines, an RTP of 96.96% and a 700x maximum win. Sister titles like Starburst and Twin Spin Megaways show the same habit of doing two things properly rather than five half-heartedly. Stakes run from 0.25 to 250 per spin.
Symbols and Pays
It’s a 25-line, three-row game built on 15 independent reels, and the paytable is classic fruit-machine territory: a crown at the top, watermelon, lemon and cherry beneath it, then the royals from A down to 10. Wins pay left to right across the fixed lines, and only the highest win per line counts.
The wild substitutes for every symbol except the scatter. The fruit symbols have a two-tier structure: lemon and cherry each carry a higher and a lower pay row, and the higher rows pay from four matches while the lower rows pay from three. Every other symbol pays from three matches upward.
All values below are multiples of the total bet:
- Crown: 2,000x for three, 6,000x for four, 40,000x for five
- Watermelon: 2,000x for three, 4,000x for four, 12,000x for five
- Lemon (top row): 2,000x for four, 10,000x for five
- Lemon (low row): 1,000x for three, 2,000x for four, 10,000x for five
- Cherry (top row): 2,000x for four, 8,000x for five
- Cherry (low row): 600x for three, 2,000x for four, 8,000x for five
- A: 600x for three, 1,200x for four, 5,000x for five
- K: 400x for three, 1,000x for four, 4,000x for five
- Q: 200x for three, 600x for four, 3,000x for five
- J: 200x for three, 400x for four, 2,000x for five
- 10: 200x for three, 400x for four, 1,600x for five
The hit rate is 25%, so roughly one spin in four connects with something. That figure points to frequent smaller payouts rather than rare large ones. It’s a steady game, with the occasional escalation.
Staking and Bet Settings
Bets run from 0.25 to 250 per spin, and the 25 lines are fixed – there’s no option to play fewer of them, so every spin covers the full grid. The game can be played with cash or with coins, and you switch between the two in the game settings. Not every operator offers both modes.
In coin mode the bet is set by choosing a coin value and a bet level through the bet settings; in cash mode you simply pick the stake. The balance display follows whichever mode you’re in. If a session is left inactive it ends automatically, and a malfunction voids all pays and plays.
Sticky Win
Sticky Win is the feature that gives the base game its pulse. It triggers on any winning bet line, or when 3 or more scatter symbols land. From there it runs a fixed sequence:
- The reels carrying the winning symbols lock in place.
- Every other reel re-spins for a chance of bigger wins.
- If the re-spin creates a new win, the newly winning reels lock too and the rest spin again.
- The cycle repeats as long as each re-spin adds a new win.
- When a re-spin adds nothing, the feature ends and all active wins are paid together.
It’s a simple escalation mechanic: a modest line win can grow across two or three re-spins without costing anything extra. There’s no separate multiplier attached, so the growth comes purely from additional symbols joining the locked set.
Because scatters also trigger it, Sticky Win doubles as a free-spins launcher. Land 3 or 4 scatters and they’ll lock while the remaining reels chase the fifth. The same lock-and-respin loop that extends a line win also builds the anticipation of the bigger round, one reel at a time.
Free Spins
5 or more scatter symbols activate the free spins round, and the more scatters you land, the bigger the award:
- 5 scatters: 10 free spins
- 6 scatters: 15 free spins
- 7 scatters: 20 free spins
- 8 scatters: 25 free spins
- 9 to 15 scatters: 30 free spins
Every win during the round is tripled. That’s a flat 3x on everything the round pays, not a progressive multiplier that builds – it applies from the first spin to the last.
Sticky Win stays live during free spins, so a winning spin inside the round locks and re-spins the same way it does in the base game, with all of it paying at 3x. The two mechanics feed each other: locked reels extend wins, and the multiplier triples whatever the extension produces.
The scatter requirement is steep. 5 is the entry price on a 5×3 grid, so the round is the exception rather than the rhythm of a session.
When it does arrive, the tripled Sticky Win chains carry it. The jump from 10 spins at 5 scatters to 30 at 9 means a big scatter count changes the character of the round entirely.
Our Honest Verdict
Overall Rating: 7.2/10
Playing this feels like being at a small variety show where the warm-up act is better than the headliner. The reason to sit down at this one is Sticky Win: it makes even the humblest line win grow for free, and that loop of lock and re-spin happens so often it becomes the actual game. It’s also the best thing here, because no other classic-layout slot gives the base game this much to do.
The weakness is that the headliner rarely takes the stage. 5 scatters for entry is a steep ask, and a 700x ceiling means even a good round won’t change your week. One spin in four connects, so the session never goes quiet – it just never reaches the top of the bill.
It’s a comfortable fit for players who enjoy frequent small escalations and don’t measure a slot by its ceiling. Chase-the-maximum players will find the crown here sits on a modest head. For everyone else, the king puts on a perfectly decent show, and he’s generous with the encores.
King of Slots FAQs
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What is the RTP of King of Slots?
The RTP is 96.96%. -
How volatile is King of Slots?
There’s no volatility rating. The 25% hit frequency is the useful guide instead: roughly one spin in four produces a win, which points to frequent smaller payouts rather than rare large ones. -
How do you trigger Sticky Win in King of Slots?
Any winning bet line, or 3 or more scatter symbols, triggers Sticky Win. The reels with the winning symbols lock and the rest re-spin, continuing as long as each re-spin creates a new win. When a re-spin adds nothing, all active wins are paid together. -
How many scatters do you need for free spins in King of Slots?
5 or more scatter symbols activate free spins. 5 scatters award 10 spins, 6 award 15, 7 award 20, 8 award 25, and 9 to 15 award 30. -
Are free spin wins multiplied in King of Slots?
Yes, every free spin win is tripled. It’s a flat 3x from the first spin to the last, and Sticky Win stays active during the round, so locked-reel re-spin wins pay at the same multiplier. -
What does the wild symbol do in King of Slots?
It stands in for any symbol except the scatter, so it can complete or extend a line win, but it can’t help build the scatter count for free spins. -
What is the maximum win on King of Slots?
The maximum win is 700x your bet. -
Who makes King of Slots?
NetEnt. It runs on a 5×3 grid with 25 fixed paylines. -
Can you change the number of paylines in King of Slots?
No. All 25 bet lines are fixed and in play on every spin, so the bet you set always covers the full grid. -
Do the fruit symbols pay from two matches in King of Slots?
No. The higher lemon and cherry pay rows start paying at four matches, and their lower rows at three, the same as every other symbol.
