You are here:
🔥 CASINO DEAL 🔥
Play with a Bonus at Slots.lv Casino
We offer over 32,178 free slots. Start here.
Play Book of 99 for Free
Relax Gaming
2.9
243 Ratings
Rate this Game
Play this Game at the Casino
#1 Casino for Players in United States
Get 200% up to $3000 + 30 Free Spins
Rating
Gold Award
Get 200% up to $3000 + 30 Free Spins
Payment Methods
Amex, Bank Transfer, Bitcoin, Mastercard, Visa, Ethereum, Interac, Litecoin
#2
Get 600% Welcome Match + 60 Free Spins on Top
Rating
Gold Award
Get 600% Welcome Match + 60 Free Spins on Top
Payment Methods
Amex, Bank Wire, Bitcoin, Diners club international, Easyeft, Mastercard, Paysafecard, Visa, Discover, Interac
#3
500% Match Bonus up to $2,500 + 30 FS on Treasures of the Mystic Sands
Rating
Silver Award
500% Match Bonus up to $2,500 + 30 FS on Treasures of the Mystic Sands
Payment Methods
Eco, Mastercard, Visa
#4
Get 250% up to $2,500 + 50 Free Spins on the hottest slots
Rating
Gold Award
Get 250% up to $2,500 + 50 Free Spins on the hottest slots
Payment Methods
Bank Wire, Mastercard, Neteller, Visa
#5
Sign up and get a Match Bonus up to 111% + $111 Free Chip
Rating
Gold Award
Sign up and get a Match Bonus up to 111% + $111 Free Chip
Payment Methods
Bitcoin, Diners club international, Mastercard, Visa, Discover, Litecoin, BitcoinCash, MuchBetter, American Express, eZeeWallet
#6
Claim up to a $5,000 Welcome Bonus
Rating
Gold Award
Claim up to a $5,000 Welcome Bonus
Payment Methods
Apple, Mastercard, Visa, Interac, Google Pay, Crypto
Similar Games
Zeus
3.7
RTP
95.97
Paylines
30
Reel
5
Layout
0
Zeus 3
3.6
RTP
96.19
Paylines
192
Reel
6
Layout
0
Kronos
3.4
RTP
95.94
Paylines
20
Reel
5
Layout
0
Zeus 1000
3.6
RTP
96
Paylines
100
Reel
5
Layout
0
Power of Gods Medusa
4.4
RTP
96.18
Paylines
10
Reel
5
Layout
0
Medusa 2
4.0
RTP
95.18
Paylines
25
Reel
5
Layout
0
Flame of Olympus
4.5
RTP
0
Paylines
20
Reel
5
Layout
0
Zeus II
4.0
RTP
95.53
Paylines
50
Reel
5
Layout
0
Age of the Gods Wheels of Olympus
4.1
RTP
96.37
Paylines
30
Reel
5
Layout
0
Achilles
3.8
RTP
97
Paylines
20
Reel
5
Layout
0
Book of 99 Slot Review
The Book of 99 slot machine is an online casino game by Relax Gaming that was inspired by Greek mythology. All the action takes place on a 5x3 grid with 10 static paylines. The ancient book of 99 functions as both the wild and scatter, triggering 10 free spins and substituting for all other symbols.
Game Info
Return to Player
99
Volatility
High
Provider
Relax Gaming
Autoplay
Bonus Buy
Bonus Rounds
Cascading Reels/Avalanche Feature
Cluster Pays
Expanding
Free Spins
Gamble
Jackpot Slots
Megaways
Mobile
Multiplier Symbols
Mystery
Scatter Symbols
Spreading
Stacked
Sticky
Number of Paylines
10
Layout
Min Bet
0.1
Max Bet
100
Release Date
5/31/2021
Last Update
2/28/2025
About Relax Gaming Game Provider
Other Games from Relax Gaming
Top Real Money Casinos to play this game
#1 Casino for Players in United States
Get 200% up to $3000 + 30 Free Spins
Rating
Gold Award
Get 200% up to $3000 + 30 Free Spins
Payment Methods
Amex, Bank Transfer, Bitcoin, Mastercard, Visa, Ethereum, Interac, Litecoin
#2
Get 600% Welcome Match + 60 Free Spins on Top
Rating
Gold Award
Get 600% Welcome Match + 60 Free Spins on Top
Payment Methods
Amex, Bank Wire, Bitcoin, Diners club international, Easyeft, Mastercard, Paysafecard, Visa, Discover, Interac
#3
500% Match Bonus up to $2,500 + 30 FS on Treasures of the Mystic Sands
Rating
Silver Award
500% Match Bonus up to $2,500 + 30 FS on Treasures of the Mystic Sands
Payment Methods
Eco, Mastercard, Visa
#4
Get 250% up to $2,500 + 50 Free Spins on the hottest slots
Rating
Gold Award
Get 250% up to $2,500 + 50 Free Spins on the hottest slots
Payment Methods
Bank Wire, Mastercard, Neteller, Visa
#5
Sign up and get a Match Bonus up to 111% + $111 Free Chip
Rating
Gold Award
Sign up and get a Match Bonus up to 111% + $111 Free Chip
Payment Methods
Bitcoin, Diners club international, Mastercard, Visa, Discover, Litecoin, BitcoinCash, MuchBetter, American Express, eZeeWallet
#6
Claim up to a $5,000 Welcome Bonus
Rating
Gold Award
Claim up to a $5,000 Welcome Bonus
Payment Methods
Apple, Mastercard, Visa, Interac, Google Pay, Crypto
Begin Your Odyssey
Play the Book of 99 slot online and embark on an epic Greek odyssey, encountering mythological monsters along the way. This title was developed by Relax Gaming, who is an expert in producing video slots with top-notch graphics. The symbols in this casino game take the form of gruesome ogres and wicked harpies, valiant heroes and cunning sorceresses.
Rewriting Ancient History
You have the option to play Book of 99 for free or real money. To help you get started, here are a couple of fantastic no deposit bonuses that you can use! Betting options in this casino game range from 0.10 to 100.00 coins per spin. The biggest win available in the Book of 99 slots game is x5000 your wager and the volatility is very high. We were incredibly impressed by the RTP, which is 99% – much better than average!
Face Mythological Monsters
The sacred scripture is the most important symbol in the Book of 99 online slot. Not only does this book act as the wild – replacing every other symbol in the game – but it also functions as the scatter. So, whenever 3 or more books appear on the screen, 10 free spins are triggered! During these free spins, a special expanding symbol will be randomly selected, which helps you to land additional wins. You can also unlock free spins by filling up the meter on the left-hand side of the screen.
Symbol
Two on a Payline
Three on a Payline
Four on a Payline
Five on a Payline
Greek Hero
1x
10x
100x
500x
Sorceress
0.5x
4x
40x
200x
Ogre, Harpy
0.5x
3x
10x
75x
A, K
-
0.5x
4x
15x
Q, J, 10
-
0.5x
2.5x
10x
Explore Ancient Greece
Like many other online casino games, the Book of 99 slot machine draws inspiration from Ancient Greece. If you fancy delving a little deeper into the mythology, why not play the Zeus online slot by WMS ? In this game, you can meet the Greek gods and potentially win lucrative prizes with the free spins feature. The Medusa slot machine by NextGen Gaming is also worth trying out. The biggest payout is x5000 your total wager and there is a Pegasus bonus feature with instant wins, too!
Are You Ready?
The Book of 99 online slot is truly epic. The theme is incredibly well-executed, creating an immersive experience. We loved the fact that the scatter and wild were the same symbol, increasing the win potential of each spin. This is reflected in the game’s outstanding RTP of 99%!
FAQ
Where can I play the Book of 99 slot demo?
We have the demo of the Book of 99 slot here on VegasSlotsOnline. This allows you to play the game for free, so you can get used to the mechanics before playing for money.
Where can I find a trusted casino to play the Book of 99 slot machine?
We have a list of safe online casinos on our website. Use one of these casinos to play the Book of 99 slot machine and your money should be perfectly secure!
Can I play the Book of 99 slot with Bitcoin?
The Book of 99 online slot can accept cryptocurrencies as payment. However, you will need to play this game on a Bitcoin casino, as some operators don’t support this deposit method.
Why should I play the Book of 99 slot machine?
The Book of 99 slot machine is one of the best online slots with a Greek mythology theme that we have ever played. Its RTP is an outstanding 99%, which is much higher than average.
Is the Book of 99 online slot available on mobile?
If you love mobile gaming, then you’re in luck! The Book of 99 online slot has been optimized for all platforms, so you can enjoy this title on your mobile, computer, or tablet.