Book of 99 Slot Review – RTP, Theme, Slot Experience

Book of 99 Slot Review – RTP, Theme, Slot Experience

Book of 99 is one of Relax Gaming’s masterpieces. This slot game is still popular among gamers today. Just check our book of 99 slot review to find more.

Odysseus’ return from the Trojan War was not without its difficulties. It lasted ten years, during which time the courageous warrior-King faced tremendous challenges. These included being enchanted by the one-eyed Cyclops and being tethered to the mast to avoid the hazardous Sirens’ seductive call. 

Penelope, his ever-faithful queen and wife, had her hands full fending off hundreds of suitors vying for the throne at the same time in Book of 99

Book of 99 – Introduction

Relax Gaming appears to be on the lookout for a new kind of throne, the ‘Book of’ throne. Their enticement to participants comes in the form of enticing theoretical returns of 99%, but the keyword here is ‘theoretical.’ 

There’s no disputing that this is an enticing and world-record-breaking statistic, but the volatility nature of the game can quickly deplete your cash. With the Book Collection feature, great aesthetics, and an intriguing background, Book of 99 is unquestionably a strong contender. Just check our book of 99 slot review below.

Book of 99 Slot Features

The Book Collection feature is one of the game’s unique features, and the book serves as both the wild and scatter symbol, as is customary. The book acts as a wild symbol, substituting for all other symbols to help you construct winning combinations, and each book you land adds to the meter on the left-hand side.


Homer (not the goofy Simpson figure) and his renowned Odyssey are definitely influenced by the Wild Collection Meter. The meter, like the classic dactylic hexameter poem, depicts Odysseus, the Greek battle hero and King of Ithaca, on his treacherous return home from the Trojan War (also depicted by Homer in his equally famous Iliad).


Anyway, aside from the history lesson, each book you gather advances Odysseus’ ship one step closer to home, and you’ll need to collect 99 wilds to fill the meter and reunite the courageous King with his very patient wife, Penelope. This activates the bonus round, which plays out identically as if you had three or more book scatters on the same spin.

Bonus Round

There is no difference in landing more than three book symbols in this game because there is no scatter win. In either case, 10 free spins initiate the Bonus Round, and the Book opens to a random page to discover which symbol becomes the bonus round’s special expanding symbol.


If one of the four character symbols is selected, you must have a minimum of two symbols anywhere to activate the expanding symbol feature. To extend the low-value royal symbols, you’ll need at least three symbols. 

After the standard win computation, all instances of the chosen symbol expand, and they don’t have to land adjacent to earn a win. By landing 3+ scatters on the same free spin, you can retrigger the feature.

The Book of 99 Slot Experience with 200 Spins

The last part of our book of 99 slot review, we also will talk about the gaming experience offered by this slot game. After a few minor wild wins, we hit a large one not long before three book scatters triggered the bonus round. This occurs at 1:35 into the 3-minute highlights video, and you can actually read portions from Homer’s Odyssey in the book if you pause the film. Simply press the play button below to see how we did.

Summary Of The Review

Relax Gaming has realized that in order to win the ‘Book of 99‘ crown, you have to be a little “extreme.” In the absence of King Odyessues, the popular genre is as crowded with competitors as Queen Penelope’s home is with power-hungry suitors. It’s a lovely touch to pay homage to Homer, and specifically The Odyssey, and the Book Collection system matches the theme perfectly while also keeping you engaged.


The record-breaking RTP of 99% is clearly the primary draw. Few games, and even fewer slots, come close to these figures. This “magic number” might have the same impact on naïve punters as the Sirens lured Odysseus’ men to their deaths with their beguiling songs. 

The base game, in our experience, can be as dry as the bones in the cave of the one-eyed Cyclops, and the expanding symbol you acquire will make or break your bonus round. That the end of our our book of 99 slot review. 

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