- Good choice of bonus features
- High volatility is not to everyone’s taste
Contents
Introduction
The classic fruit theme has been given an update in this five-reel, ten variable payline slot from Thunderspin. There is no shortage of fruity melons and shiny 7s, but the action has been given an updated twist with the addition of features such as free spins, wilds, special symbols, scatter wins, and multipliers of up to 300x your stake.
Book of Jam theme and storyline
This is one of Thunderspin’s Book Of… slots, alongside the likes of the Book of Dead slot and the Book of Games. This slot is a sugary-sweet affair with a few treats to get the taste buds tingling. Overall, it is a classic fruit-themed game set amidst what looks like a lush orchard of delicious fruit treats. The branches sway in a gentle breeze and a country-style soundtrack accompanies the play.

Book of Jam RTP and variance
Many Thunderspin free play slots are high volatility affairs, and this game is no exception. High volatility won’t be for you if you prefer small wins with almost every spin. There may feel like some prize droughts if and when you choose to play this game but the wins can be well worth the wait when they eventually arrive. When it comes to the theoretical return to player ratio, Book of Jam offers a figure of 95.9 per cent. This is pretty average for an online slot but, as with any of these games, no wins can ever be guaranteed if you decide to play.
How to play Book of Jam
Free slot games are generally not hard to play; however, if you like a few handy hints before you start, we are happy to oblige:
- Look out for the coin stack, which is what you need to click on to open the bet settings. This is where you can set the number of lines you want to play, your bet level and the coin value. These will form your total bet.
- There is a max bet tab if you want to jump straight to the top stake allowed. Make sure you can afford to play at this level and always bet responsibly.
- Your balance and total bet are displayed at the bottom of the reels.
- Use the turbo button if you want to play at a faster-than-normal speed. Beware that this can make your balance disappear much faster than it usually would.
- Click the three-bar tab to open the paytable. This is where you will also find the sound settings.
Book of Jam bet sizes & paytable wins
You can bet from 0.1 to 100 per spin on this game. The paytable changes dynamically according to how much you choose to bet, with prizes paid out for combinations of between three and five matching symbols. The top wins on offer for five-of-a-kind combinations include:
- 7s = 25,000
- Bells = 10,000
- Melons = 6,000
- Grapes = 4,500
Oranges, plums, lemons, and cherries will pay out between 400 and 1,200 for five-strong combinations.
The book scatter symbol also offers prizes of between 2x and 200x your bet for combinations of three to five icons.
Book of Jam bonus features
Wild
The shining star is the wild of the game and appears on reels two, three and four.
Scatter
The book is the scatter symbol, which contains the recipe for success with a free spins bonus. Three or more scatters can earn you up to 20 bonus games, three will earn you 10 bonus games, four will get you 15, and five will reward you with the maximum of 20 free spins.
Special symbol
The bonus spins are enhanced by a special symbol that is chosen randomly at the start of the games. Three or more special symbols can fill an entire reel to really give your prize-winning potential a boost.
Super bonus
The free spins bonus can also open the door to the super bonus game if you manage to fill the special counter with the slot’s purple bonus icons. You will then get the chance to choose from 25 jam jars and reveal multipliers from 10x to a massive 300x your stake.
Book of Jam review: our verdict
Book of Jam is a well-designed slot that feels contemporary even though it has a classic fruit theme. The free spins, multipliers, wilds and scatters all add to the excitement of the gameplay, although it will feel too volatile for many players. The reasonably wide betting range and decent maximum stake offer plenty of choice, even for those in the market for a more adrenaline-boosting experience. It also offers enough entertainment to satisfy more cautious players if they can cope with the variance, making it a fairly juicy bet whatever your personal tastes and budgetary needs.
Disclaimer: Book of Jam trademark / license is owned by Thunderspin. This site is not endorsed by Thunderspin.
| Slot Name: | Book of Jam |
|---|---|
| Software: | Thunderspin |
| RTP: | 95.90% |
| Volatility: | High volatility |
| Paylines: | 10 |
| Reels: | 5 |
| Min Bet (all lines covered): | $0.01 (CAD) |
| Max Bet: | $100 (CAD) |
| Top Win: | 1000 |
| Features: | Bonus Game, Wild Symbol, Scatter Symbol, Multiplier, Free Spins, High volatility, 5 Reels, Symbol Collection |
| Themes: | Fruit |
| Last Update: | 26/11/2021 |
FAQs
Are there free spins in the Book of Jam slot?
There is a free spins bonus in this game, which is triggered by landing at least three scatter symbols. Three scatters will earn you 10 free spins, four will get you 15, and five will earn you 20 bonus games. During the free spins, you can enjoy special symbol bonuses and could trigger the super bonus game.
What is the RTP of the Book of Jam slot?
The theoretical return to player rate of this game is 95.9 per cent. This is bang-on the industry average, which sits at around the 96 per cent mark.
What is the volatility of the Book of Jam slot?
This is a high volatility game, which means that the variance will not suit every player. This won’t be for you if you like more of a balance between the size of the wins that might roll in and the frequency with which they might appear.
Games by Same Maker
| Slot Name | RTP | Volatility | Top Win | Themes |
|---|---|---|---|---|
| Book of Games | 95.70% | High volatility | 1000 | |
| Indian Gold | 95.60% | Medium volatility | 1000 |
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