Book of 99 Slot Demo
Book of 99 slot from Relax Gaming has a mega 99% RTP, medium volatility and a 12,075x max win. This Greek mythology-themed slot is packed with all the right stats, but what is it actually like to play? Check out our honest review and if you want to see what it’s all about, give the free Book of 99 demo a spin just above!
Our Verdict on Book of 99 – Feature Score: 7.7
Released in 2021, Book of 99 is a cheeky nod to the hugely popular Book of Dead from Play’n GO, with more than a few things in common. That said, this slot is a solid game in its own right, thanks to the intriguing features and massive 99% RTP. In fact, the tops our list of UK slots with the highest RTP.
We’re big fans of the game’s 12,075x your stake max win, as it’s a pretty high potential, given that this is a medium-volatility slot. I’d recommend it to anyone who likes the ‘Book of’ style of slots but is seeking some high RTP mixed with simple gameplay.
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Feature Score
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RTP
99%
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Volatility
Medium
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Progressive jackpot
–
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Min. BET
£0.1
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Max. BET
£5
5 Reasons to Play the Book of 99 Slot Demo
- Huge RTP: Book of 99’s massive 99% RTP is rarely seen at UK casinos and can bring steady rewards.
- Expanding Symbols: These expand to fill entire reels in the Free Spins feature and pay-all-ways to boost your wins significantly.
- Wild Collecting: Every Wild symbol gets collected, giving you a set path towards triggering the Free Spins feature.
- Popular Slot Genre: There’s an extensive choice of ‘Book of’ slots around, proving how popular they are.
- Ideal for Wagering: With such a high RTP, Book of 99 is an ideal choice for tackling those pesky bonus requirements.
Themes
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Gods -
Mythology
Bet £10, get 200 Free Spins – no wagering
More Information
- 10 Free Spins
How to Play Book of 99 Slot
- Set your stake
Choose your bet amount between £0.10 up to £5 per spin. - Start the game
Hit the “Spin” button below the reels to play. Wins are formed by landing at least 3 matching symbols on one of the winning paylines. - Result
If you have landed a win, the payout will be added to your balance, if you have triggered a bonus feature, it will begin.
Key Game Symbols
- Regular Symbols: Letters and numbers are the lower-paying symbols with four mythical Greek characters representing the higher-paying symbols. The max win possible is 500x your bet for landing five Apollo symbols.
- Wild Symbol: The Book of 99 acts as the Wild and substitutes for all symbols except the expanding symbol in the Free Spins round.
- Expanding Symbol: One of the slot’s symbols is randomly selected as the special expanding symbol at the start of the Free Spins round. During Free Spins, it will expand to cover all positions on its reel once regular wins have been paid.
These will pay out on each line, even if symbols are not connected from left to right. So, expanding symbols can prove very lucrative indeed, especially if you land them on all five reels!
Bonus Features
The two main features to look out for in Book of 99 are:
Wild Collection Feature
Every Wild landing during the base game gets collected into the map-themed metre beside the reels. The Free Spins feature will trigger when you’ve filled the metre with 99 Wilds. The average of your bet sizes from each wild collection is used as your bet size during the feature.
Free Spins Feature
The Free Spins feature can be triggered by filling the Wild Collection metre or landing three or more Wilds on a single spin.
This bonus round kicks off with 10 Free Spins, and one of the slot’s nine regular symbols is randomly chosen to act as the special symbol for the round.
You’ll get an additional 10 Free Spins if you land three or more Book of 99 symbols anytime during the round.
Visuals and Theme
The theme in Book of 99 takes you on a thrilling mythological adventure inspired by Homer’s Odyssey. The symbols, all heroes and villains from Greek mythology, are illustrated in Relax Gaming’s distinct, cartoonish style. This gives the slot a unique blend of charm and creepiness. I was genuinely freaked out when a winning combo of Lamia symbols landed!
The music and sound effects add to the slot’s otherworldly vibe without feeling overpowering at any point. While the base game is solid in terms of visuals and audio, it’s the bonus round that brings the theme to life. Here it shifts to a sunlit Arcadian setting with some smooth animations that really drew me into the game.
If you enjoy slots with a heroes and villains theme, then why not try out some of our other similar themed free slot games? You might find another favourite.
Book of 99 RTP and Volatility
With an epic RTP of 99.00%, Book of 99 offers one of the highest return-to-player percentages out there right now. This is way above the industry average of 96%, and it’s pretty unusual to find slots with an RTP this high. This instantly puts this ‘Book of’ slot ahead of the many others you’ll find at most UK online casinos.
Relax Gaming rates it at 6 out of 10 in terms of volatility. I’d call that a medium level of volatility, which should ensure a steady stream of moderate value wins. That certainly rings true from my testing, as I found enough rewards coming my way to play for quite a while from a modest initial bankroll.
Expert Tip
It is very rare to find a slot where you don’t have to compromise on the stats. Often high max wins slots come with high volatility or a low RTP. Book of 99 has crowd pleasing stats for all, high RTP – medium volatility – high max win, making it a great all-rounder.
Where to Play Book of 99
If you’re keen to play Book of 99 for real money, here are three top UK slot sites suggestions to get you started. Each one has some exciting bonuses for you to claim, as well as being fully licensed to keep you safe anytime you gamble.
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- Advantages: Focused brand with a streamlined, easy to use platform. Good amount of slots with an impressive mix of providers and dedicated app for mobile gaming.
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Minimum deposit: £10
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Final Thoughts on Book of 99
If you like the setup, there are plenty of ‘Book of ‘ inspired slots available at UK online casinos, such as Book of Ra or Book of Dead, anytime you fancy a casual spin. It can be tough to choose when they all offer pretty much the same thing, so it’s nice to see Book of 99 arriving to make your decision way easier.
With its industry-leading RTP of 99% and above-average win potential, this slot blows the competition out of the water. I’d recommend this slot to anyone looking to land some steady wins while building towards the Free Spins round with every Wild collected.
FAQ – Book of 99 Slot
What is Book of 99 RTP?
Book of 99 has an RTP of 99% which is exceptionally high. The average UK online slot has an RTP of 96%. That means that theoretically players will get an average of £99 back for every £100 wagered in the long-term.
What is Book of 99 Volatility?
Book of 99 has a medium volatility meaning it provides a good balance between regular payouts and average sized wins.
Where can I play Book of 99 for free?
At the top of this page you will find the free Book of 99 slot demo. Just click on the game, verify your age and you can play as long as you want risk-free.