Book of 99

Book of 99 slot overview

Book of 99 – how about another “Book of” slot but with a boosted 99% RTP and an over 12,000x stake max win?

Game supplier Relax Gaming has shaken things up this time by releasing a slot with the famous “Book of” theme with standard features and adding an unusually high RTP and a mouth-watering max win cap to the mix.

The bonus collection feature, where you collect double scatters to save up for a bonus round, is rare for this type of slot.

Where to Play Book of 99 in the UK

If you want to play Book of 99 for real money, we have selected some excellent UK online casinos for you.

New players who make a first deposit are eligible for a welcome bonus.

Book of 99 UK Free Demo

You can try Book of 99 for free right here and test the slot’s features, theme and bonus rounds before deciding if you want to play it on a real money version.

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Book of 99 RTP

Online Casinos wouldn’t be too pleased if their players only played Book of 99. This slot’s average and long-term Return To Player is an unusually high 99%.

This is currently the slot’s highest and only Return To Player version.

Still, CasinoWizard will monitor this and update the information if Relax Gaming decides to release other RTP versions of this slot.

Remember that the slot has high variance, so you play with a riskier, high-reward approach.

Feel free to choose one of the trusted and popular high-payout casinos that offer Book of 99 to their players.

In most top 10 UK online casinos, this slot can’t be used for bonus wagering as the RTP setting is too high.

Choose any of the UK casinos listed on the RTP comparison table above to start playing Book of 99 at the best possible payout level of 99%.

Why RTP is important when playing slots

Playing with a higher Return to Player increases your chances of winning and playing time.

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How to play Book of 99

Book of 99 is played on a classic 5-reel, three-row game panel with 10 fixed pay lines.

Bets start at 10p and go up to £2 (aged 18-24) and £5 (aged 25+) per spin.

The Free Spins bonus round is familiar to “Book of” slots enthusiasts, while the Collect Books feature might be a new experience for some players.

Features and free spins bonus

Book of 99 features explained:

• Free Spins: Landing three or more wild symbols on the reels during one spin triggers 10 Free Spins

A special expanding symbol is randomly selected before the Free Spins begin. The special expanding symbol will pay on each line, even if the symbols are not connected from left to right.

• Collect Books: Every time a wild symbol lands on the base game’s reels, the collection meter will increase by 1 step.

10 Free Spins will be triggered when the collection meter is filled with 99 wild symbols.

The Free Spins will be played with a bet size corresponding to the average bet size used when collecting the 99 wilds.

What is the maximum win on Book of 99?

The best outcome when playing Book of 99 would be to win the 12,075x your bet per spin max win.

With the max bet of £5, you would walk away with a sweet £60.375 if you hit the capped max win.

Expectedly, the big wins can only be achieved during the Free Spins bonus round, which is won by landing three wild symbols or collecting the 99 books in the base game.

Once the Free Spins game is activated, you want to see one of the high-value symbols chosen as the expanding symbol and then land those symbols all over the reels to achieve big wins.

In some cases, you could get lucky and land three more books during the Free Spins, which adds +10 spins to your bonus game, giving you more chances to win.

More 99% RTP slots

Book of 99 has an exceptionally high RTP of 99%, meaning that of all the money staked on it, an average of 99% will be given back to the players.

The higher the Return to Player, the more spins you get for your money and, therefore, your chances of winning.

Finding other 99% RTP slots can be a difficult task, however, as there aren’t that many of them around:

• Ugga Bugga (Playtech): 99.07% RTP. This simple slot machine, released in 2006, features held reels, wilds, and a maximum win of 1,000x.
• Mega Joker (NetEnt): 99% RTP. Mega Joker is a classic NetEnt slot that offers a 99% RTP when playing the top set of reels. Be aware, though, that the base game has a significantly lower RTP. You could argue that Mega Joker technically is NOT a 99% RTP slot, as you always need to start in the low-paying base game before upgrading to the 99% payout secondary game.
• Some in-house crash games also have an RTP of 99% or higher. including Crash by Stake Originals and Crash by BC.Originals.

Other online slots with a slightly lower than 99% RTP include Jackpot 6000 (NetEnt), which has a 98.86% RTP, 1429 Uncharted Seas (Thunderkick), which has a 98.50% RTP, and Blood Suckers (NetEnt), which has a 97.99% RTP.

The Wizards’ verdict: 8 out of 10

While fans of the “Book of” slot genre have hundreds of slots to choose from (including Book of Dead from Play’n GO and Book of Shadows from Nolimit City), Book of 99 is the only one to feature a 99% Return to Player.

On top of that, both the higher max win potential and the collecting books feature add new elements to the genre.

Before you start playing, be aware that once the journey toward the 99 collected books has begun, it’s very tempting to keep going. The reason is that each collected book feels like a small win (not necessarily a win to your balance), and the Free Spins are in constant reach until the mission has been completed.

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