Devil's Number

by Red Tiger Gaming

Devil's Number is a fiendishly fun 5-reel, 30 payline slot developed by Red Tiger Gaming that's known for its innovative game mechanics that can see the reels set alight forcing low paying symbols to removed from the game or see higher value symbols upgraded, meaning much bigger payouts as symbols cascade! Beware though! This horror-themed slot is highly volatile and not for the faint of heart!

Slot information

RTP: 96.10%
Volatility: High
Max Payout: 2,500x stake
Reels: 5
Paylines: 30
Jackpot: No
Min Bet: 0.10
Max Bet: 100.00
Theme: Horror
Release Date: April 2019

Our rating

“ This fiendishly fun slot boasts brilliant features and mechanics, we urge you play! ”

3.9 out of 5

Win potential

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Devil's Number Screenshots

Devil's Number Features

This game comes bundled with some nice bonus features, two of which can come during any time in the base game, which is always nice to see! 

The first feature to be aware of this the upgrade feature. Whenever players register a win featuring any of the four high-value symbols the Mark of the Beast below the reels may burn, causing the feature to kick in. Symbols will be randomly upgraded and in turn, will pay more than originally intended.

The second feature that may potentially crop up in the base game is the remove feature… As the name suggests, symbols are removed whenever a win line containing any low paying symbol is registered and the Mark of the beast below the reels burns. This causes cascading tiles and could lead to even further winning combinations. 

As you would expect, the third and final bonus feature in Devil’s Number is the free spins. Whenever the player lands 3 nine (9) symbols on reels 2, 3 and 4 they will turn upside down to reveal the dreaded number of the beast, 666.

12 free spins are immediately triggered, the first time a win is formed using high-paying symbols they pay normally, however every other high-paying win from there on out is upgraded. Whenever low-paying symbols create a winning line the symbols cascade. 

It’s possible that players can trigger an addition 6 free spins if they manage to land three more nine symbols during the bonus round.

Devil's Number - Upgrade Feature

Upgrade Feature

Whenever players register a win featuring any of the four high-value symbols the Mark of the Beast below the reels may burn and several low-value symbols may be upgraded to high-value ones.

Devil's Number - Free Spins

Free Spins

Whenever the player lands 3 nine (9) symbols on reels 2, 3 and 4 they will trigger 12 free spins. Low-value symbols will always cascade after a win whilst high-value symbols will increase in value as the free spins go on.

Devil's Number - Remove Feature

Remove Feature

The Mark of the Beast may occasionally burn and remove low paying symbols from the reels, allowing for the symbols to cascade and allow high-value symbols to drop into place.

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Devils Number Review

Devil’s Number is a fiendishly good online slot from Red Tiger Gaming that truly takes a walk on the wild side. This dark and ominous 5-reels, 30 payline slot makes use of cascading symbols (always a winner in our eyes) and has three lucrative bonus features that can massively boost your bankroll if you’re lucky enough to trigger them. 

If you’re the sort of person that enjoys a good horror movie and pines for Halloween then this terrifying title will be right down your street. Red Tiger Gaming are truly one of the best studios when it comes to designing attractive, heavily themed slots, and they haven’t let us down here. 


Devil’s Number is heavily themed around all things occult. The game is set in a dimly lit, dusty old library, a slow haunting tune lingers in the background as you spin the reels, which really helps create a real feeling of nervousness, unease and strangely excitement. If you’re a fan of horror films then you’ll know exactly the feeling we’re on about here. 

Whenever a winning combination is formed a short heavy metal guitar riff plays, when a big win is registered a heavy jubilant song rings out momentarily cutting the tension… When a bonus feature is launched that’s when it gets intense! Heavy metal music blasts as the reels go into overdrive and the game gets very very exciting.

The low paying symbols in Devil’s Number (from lowest to highest) are 10, J, Q, K, A all drawn in a heavy gothic style. The high paying symbols are a scroll, a book of spells with a moving eye on the cover, a witch’s cauldron and the highest paying symbol is a trio of magic potions with angry-looking skulls atop them.


Like most Red Tiger Gaming slots, Devil’s Number could not be easier to play, the game screen is clean, uncluttered and keeps the players’ attention firmly on the reels and nowhere else.

If you jump into this game without reading any instructions or a review that breaks down the mechanics then it can take a short while to grasp, especially considering there are cascading reels just some of the time, which is somewhat unusual as it’s usually all or nothing.

Regardless of your bankroll, this game is forgiving in terms of betting ranges, players can be anywhere between 0.10 and 100 per spin, so regardless of whether you’re a high, or low roller you’ll still be able to enjoy this game.

Win Potential

Frustratingly, considering how great Devil’s Number feels, it does have a fairly low max payout of 2,500x your initial stake, which for this day and age feels quite low. The RTP of the game sits at 95% which means you’re not going to register winning spins too often, but when you do they’ll be well worth your time.

If you’ve got the patience (and the bankroll) to stick with Devil’s Number then we’d highly recommend sticking with it as it can certainly be worth it.

Our Verdict

Devil’s Number is a funny one, it’s up there alongside the best in terms of this game looks and feels whilst playing… We had a hell of a lot of fun (pun intended), whilst there’s not particularly a ton of features the ones this game does have are enjoyable and profitable when triggered. 

Unfortunately, the win potential isn’t as strong as hoped for which saw this slot lose some overall marks with regards to its final rating. Genuinely, we do recommend playing this slot, but only if you’ve got the bankroll and patience to really give it a good go.

Sam Gascoyne
Reviewed by Sam Gascoyne Last updated on

A keen sports bettor, Sam took his first foray into the world of online slots when Bonanza Megaways caught his eye, he’s never looked back since! He joined the team in 2019 and has developed an encyclopedic knowledge of online slots, he isn’t afraid to voice his honest opinion when reviewing new games, even if it does ruffle a few feathers.

Learn more about Sam here

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