Rat King Slot Review

4.1/5
Based on our expert’s review. Reviewed by
Push Gaming Slots
Review by
Chris Taylor
Updated: 14/07/2023
Review by
Chris Taylor
Updated: 14/07/2023

Get retro at the sweet factory with the Rat King slot by Push Gaming. Played on a 6×6 grid with a Pay Anywhere mechanic, wins lead to cascades and collapses of remaining symbols for new symbols to drop in. Matching Dud symbols also cascade to give you more new symbols on the grid. If Star multiplier symbols appear on the bottom-most position, the multiplier value is collected and applied to your win. Worth up to 500x, multiple Star multipliers can be applied to your win. This also applies in the Free Spins feature where the overall multiplier can only rise. With a 96.3% RTP rate and 10,000 x bet max wins, discover the secrets of the sweet factory in our Rat King review.

Max Win
10,000 x bet
Play
T&Cs Apply

18+ begambleaware.org, T&Cs apply. New reg only. Opt in & deposit £10, £25 or £50 within 7 days & further 7 days to wager cash stakes 35x to unlock reward (£50 on 2 deposits). 3 day exp. Wagering/game contributions vary. 25 wager-free spins x10p to added to Big Bass Splash with each qualifying deposit, 3 day expiry. #ad

Provider
Push Gaming
Type of Slot
Video Slot
Theme
Sweets/Retro
Reels
6x6
Paylines
Pay Anywhere
Stakes Range
10p to £100
Bonus Features
Yes (6)
Free Spins/Multiplier
10-Unlimited/Unlimited
Max Win
10,000 x
RTP
96.3%
Volatility
Medium

Rat King Demo

18plus uk-gambling-commission online-slot-co-uk-logo agechecked-verification-provider
T&Cs Apply 18+ begambleaware.org, T&Cs apply. New reg only. Opt in & deposit £10, £25 or £50 within 7 days & further 7 days to wager cash stakes 35x to unlock reward (£50 on 2 deposits). 3 day exp. Wagering/game contributions vary. 25 wager-free spins x10p to added to Big Bass Splash with each qualifying deposit, 3 day expiry. #ad
18plus uk-gambling-commission online-slot-co-uk-logo agechecked-verification-provider
T&Cs Apply 18+ begambleaware.org, T&Cs apply. New reg only. Opt in & deposit £10, £25 or £50 within 7 days & further 7 days to wager cash stakes 35x to unlock reward (£50 on 2 deposits). 3 day exp. Wagering/game contributions vary. 25 wager-free spins x10p to added to Big Bass Splash with each qualifying deposit, 3 day expiry. #ad

Recommended Casino

Rat King Slot RTP, Details & Wager Limits

Reels/Paylines: 6×6 grid + Pay Anywhere

Stakes Range: 10p to £100 per spin

RTP: 96.3%

Max Win: 10,000 x bet per spin

The Rat King slot takes place on a 6×6 grid with a Pay Anywhere mechanic. With no traditional paylines, winning combinations are formed when 7 or more matching symbols appear anywhere on the grid.

Also known as Scatter Pays, matching symbols don’t need to appear connected/adjacent to one another. The more matching symbols anywhere on the grid, the larger the payout. It works exactly like in Pragmatic Play’s Sweet Bonanza slot.

In terms of betting options, you can play Rat King from 10p to £100 a spin. Changing the total bet is simple too: click/press the ‘Coins’ icon and select from all the options available. Non-UK players can opt for Autoplay which up to 100 auto spins available. There is also Turbo Mode which is enabled by clicking/pressing the lightning bolt icon above the grid.

The Rat King RTP is 96.3% which is higher than the average of 96%. You may find the 95.24% or even 94.32% RTP versions used at some UK online casinos: check by opening the Paytable. If you opt to use the Push Bet, the RTP can rise up to 96.34% (more details below). The Bonus Buy feature can lead to a 96.93% RTP rate (again, more information below).

Medium volatility, the Rat King slot comes with 10,000 x bet max wins/payouts. The probability of winning this (the max win probability) is 1 in 11,235,955 spins whilst it decreases to 1 in 8,333,333 spins with the Push Bet enabled.

Theme: get retro at the sweet factory

Theme: Sweets/Retro

High Value Symbol: Jelly

Compatibility: Mobile, Tablet, Desktop

rat-king-slot-base-game

With a sweets/retro theme, the Rat King slot sees you head to a sweet factory where the Rat King rules. Experience a retro adventure where you aim to discover the secrets of the sweet factory. This is the setting where you’ll see conveyor belts, mixing pots and forklifts like you’re in the middle of the production line.

Visually, it has that nostalgic feeling from the 80s. It’s not the first time Push Gaming has been inspired by the 80s with the Retro Tapes slot a case in point. Graphically, it has an 8-bit quality to it. The soundtrack is hypnotic and clunky. On first impressions, you get the feeling that you’re playing an arcade video game or on an old Game Boy device.

On the 6×6 grid, you’ll see an assortment of sweets produced at the factory. They include macarons, doughnuts, Twister ice creams, sponge cakes, slices of cake and jelly. Best paying is the jelly symbol with 7-8, 9-10, 11-14, 15-19 or 20+ paying 2, 4, 8, 20 or 50 x bet respectively.

With no Wild symbol, there are Dud symbols which are greyed-out symbols with no value (more on these below). You’ll also come across Star symbols which come with multipliers. Finally, there is a Rat King Scatter symbol which is crucial to triggering the Free Spins feature.

Symbol Payouts/Info
rat-king-slot-macaron-symbolMacaron 7-20+ pays 0.5-7.5 x bet
rat-king-slot-doughnut-symbolDoughnut 7-20+ pays 0.6-10 x bet
rat-king-slot-twister-ice-cream-symbolTwister Ice Cream 7-20+ pays 0.7-12.5 x bet
rat-king-slot-sponge-cake-symbolSponge Cake 7-20+ pays 1-25 x bet
rat-king-slot-cake-symbolCake 7-20+ pays 1.5-37.5 x bet
rat-king-slot-jelly-symbolJelly 7-20+ pays 2-50 x bet
rat-king-slot-dud-symbolDud No value but removed from grid when 7+ appear
rat-king-slot-star-multiplier-symbolStar Multiplier Adds multiplier up to 500x to meter when collected
rat-king-slot-rat-king-scatter-symbolRat King Scatter 3+ collected triggers Free Spins feature

Rat King Mobile

rat-king-mobile-slot

Released on the 27th of July 2023, the Rat King slot is available on multiple devices including mobiles, laptops, PCs and tablets. With Push Gaming being focused on mobile devices (i.e. mobile-first provider), you can enjoy this retro adventure on iOS, Android and Windows smartphones.

Rat King Bonus Features

The Rat King slot has 6 bonus features. With cascades and symbol collapses, matching 7+ Dud symbols will lead to more symbols being added to the grid. If Star symbols appear on the bottom-most position, it’s collected with the multiplier (up to 500x) applied to your total win. Multiple Star symbol multipliers are possible too. This applies during the Free Spins feature where the overall multiplier doesn’t reset for wins of up to 10,000 x bet.

Cascading and Collapsing feature

When a winning combination is formed (i.e. 7+ matching symbols anywhere on the grid), the Cascading and Collapsing feature is triggered. A payout occurs and the winning symbols are removed. The remaining symbols collapse downwards with new symbols cascading in from above to fill the empty positions on the grid. This continues until no more new wins are created

Dud Symbols feature

On the grid, you will see greyed-out Dud symbols with no value or payouts. If you match a minimum of 7 of the same Dud symbol, the Dud Symbols feature will be triggered. The Dud symbols disappear from the grid to make way for new symbols to fall in.

Collection Boxes feature

At the bottom of the grid, you will see Collection Boxes. When the Star symbol lands in the bottom-most position on the grid, it’s collected in the Collection Boxes. Once collected, the Star symbol multiplier will be added to the multiplier counter for the current spin.

Furthermore, Star symbols are multipliers worth between 2x and 500x. You can collect various Star symbols with all the accumulated multipliers applying to the total win for the current spin. This is known as the Collection Boxes feature.

Free Spins feature

rat-king-slot-free-spins-feature

The Rat King slot also benefits from a Free Spins feature. It’s triggered when 3 or more Rat King Scatter symbols are collected in a single spin. These are collected in the Collection Boxes when they land in the bottom-most position.

You can see a meter to the left of the grid which shows how many scatters you’ve collected. 3, 4 or 5 Rat King Scatters will award 10, 15 or 20 free spins respectively. During the feature, 3 additional free spins are awarded when a Rat King Scatter is collected.

When the Star symbol is collected and its multiplier is added to the multiplier counter, it multiplies the total win for that free spin. The multiplier is then inactive until another multiplier is added to the multiplier counter. This means the multiplier will rise if you manage to collect enough Star symbols (i.e. an increasing multiplier basically).

Push Bet feature

Used in other Push Gaming slots like Razor Returns, there is a Push Bet feature. Costing 20% more per spin, it increases your chances of triggering the Free Spins feature. It can be activated or deactivated by clicking/pressing the toggle above the available bets.

The RTP increases to 96.34% (for the 96.3% RTP version). Importantly, the max win probability is 1 in 8,333,333 spins with the Push Bet as opposed to 1 in 11,235,955 without it.

Bonus Buy feature

Players outside the UK have the customary Bonus Buy feature. By clicking/pressing the ‘Star’ icon, buy your way into the Free Spins feature with 3, 4 or 5 Rat King Scatters. Costing up to 500 x bet, the RTP will also rise up to 96.93% (for the 96.3% RTP version):

Scatters Free Spins RTP Cost
3 10 96.58% 100 x bet
4 15 96.63% 250 x bet
5 20 96.93% 500 x bet

Rat King Review Summary: Star multipliers key to raiding the sweet factory

Ratings
Theme & Symbols








Sounds & Music








Bonus Features








RTP (96.3%)








Max Win (10,000 x)








Originality








Graphically, the retro/80s vibe in the Rat King slot will divide opinion. I personally like the design and visuals but younger slots player may prefer sharper graphics and smoother animations. Resembling an arcade video game, the soundtrack and mechanical sound effects really tie into the theme.

In terms of the bonus features, wins lead to collapses and cascades (pretty standard). The Dud symbols are needed with the Pay Anywhere mechanic but landing 7+ of the same type will see them removed from the grid to make way for new symbols.

Now, Rat King is all about landing Star symbols in the bottom-most position on the grid. These are collected (in Collection Boxes) which sees their multiplier added to the overall multiplier for your current spin. With Star symbol multipliers worth up to 500x, multiple Star symbols can see big multiplier totals applied to your win.

Then you have the all-important Free Spins feature where you can begin with up to 20 free spins. With more to be won, Star symbol multipliers are collected and added to the overall multiplier as in the base game. However, the multiplier doesn’t reset and can only increase (by collecting more Star symbols).

Basically, all the various bonus features combine in the Rat King slot. Collapses and cascades will see symbols fall down the grid with Star and Scatter symbols hopefully reaching the bottom-most position to be collected. That’s the key to increasing the overall multiplier.

If you do this enough times in the free spins, huge wins are possible, up to 10,000 x bet. The Push Bet feature may cost 20% more per spin but you get a slight increase in the RTP and a higher chance of entering the Free Spins feature. On top of this, the max win probability decreases from 1 in 11.2 million spins to 1 in 8.3 million spins. That’s a big difference for a small bet increase: worth it in my opinion.

To summarise, the Rat King slot will divide opinion graphically but the gameplay is solid. The bonus features combine nicely with the potential for big multipliers and payouts in both the base game and free spins.

If you want a collection element as such, Push Gaming’s Fat Rabbit slot sees you collect Wild Carrots in the free spins to award additional free spins and increase the Wild Rabbit size up to 5×5. With a 96.45% RTP rate, it comes with 10,223 x bet max wins.

Rat King FAQs

What is the Rat King RTP?

The Rat King RTP rate is 96.3% which is higher than the 96% online slots average. Medium volatility, Push Gaming also offer 95.24% and 94.32% RTP versions.

What is the Rat King max win?

The max win per spin is 10,000 x your total bet. With the max win probability achieved every 11.2 million spins, the bigger wins will come from the Star multiplier symbols which are worth up to 500x.

Are there any Rat King free spins?

Yes, the Free Spins feature begins with up to 20 free spins. Star multiplier symbols are collected but the multiplier counter can only increase (it doesn’t reset). Additional free spins can also be won when scatters are collected.

Is there a Rat King demo?

Yes, the Rat King free play slot is available here at Online-Slot.co.uk. Discover the secrets of this sweet factory via mobile, laptop, PC and/or tablet devices.

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