Book of Jam

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Rules and Gameplay

The Book of Jam slot by Thunderspin presents a captivating garden-themed adventure on a 5×3 reel set with 10 variable paylines. Players can enjoy this visually appealing game by setting bets ranging from $0.01 to $100 per spin, catering to both conservative players and high rollers. Gameplay revolves around matching symbols from the leftmost reel, with a special emphasis on the Free Spins and Super Bonus Pick’em Game for heightened excitement and potential wins.

Bonus Features

Book of Jam is packed with unique features designed to enhance your gaming experience and increase your chances of winning big. Key bonus features include:

  • Free Spins: Triggered by landing 3 or more Jam Recipe Book scatters, awarding 10, 15, or 20 free spins. A pay symbol is randomly chosen as a special expanding symbol for the duration of these spins.
  • Super Bonus Pick’em Game: Activated from within the Free Spins feature by filling the Super Bonus meter. Offers the chance to pick from 5 jars for multipliers up to 500x your stake.
  • Separate Wild and Scatter Symbols: Unlike traditional Book of mechanics, the Book Scatter does not act as a Wild. A separate yellow star Wild symbol assists in forming winning combinations by substituting for regular pay symbols.


The symbols in Book of Jam are a delightful homage to classic fruit slots with a modern twist. Key symbols include:

  • Wild Symbol: A yellow star that appears on the middle three reels and substitutes for all regular symbols.
  • Scatter Symbol: The Jam Recipe Book, triggering the Free Spins feature and paying up to 200x your stake for five on a payline.
  • Bonus Symbol: A purple fruit splatter, adding to the Super Bonus meter and potentially unlocking the Pick’em Bonus Game.
  • Regular Symbols: A variety of juicy fruits such as grapes, watermelons, oranges, plums, cherries, and lemons, along with classic icons like Lucky 7s and Bells.


Symbol 3x Payout 4x Payout 5x Payout
7s $250 $2,500 $25,000
Bells $100 $1,000 $10,000
Watermelons $60 $600 $6,000


Book of Jam is equipped with 10 variable paylines, offering players flexibility in how they wish to wager. Wins are attributed to sequences of matching symbols from left to right across the reels. This structure allows for strategic betting and increases the chances of landing significant combinations.

Pros & Cons

Pros Cons
Innovative Super Bonus Pick’em Game Max win capped at 1,000x your stake
Unique separation of Wild and Scatter symbols RTP slightly below the industry average
Engaging fruit garden theme with detailed graphics High volatility may not suit all players

Minimum and Maximum Bet

The Book of Jam slot allows for a wide betting range, accommodating all types of players. Bets can start as low as $0.01, making it accessible for players on a budget, and can go up to $100 per spin for those looking to make larger wagers. This flexibility in betting options makes the game suitable for casual play as well as appealing to high rollers.

Game Jackpot

The Book of Jam slot game offers a maximum win potential of up to 1,000 times your stake, making it an exciting prospect for players seeking significant payouts. The game operates on a high volatility basis, indicating that wins may be less frequent but potentially more significant when they occur. The Return to Player (RTP) rate is set at 95.9%, which is slightly below the industry average but is complemented by the game’s engaging features and potential for big wins.

About Provider

Thunderspin, the developer behind Book of Jam, is renowned for creating visually appealing and innovative online slots. The provider takes pride in offering unique gameplay features, as evident in Book of Jam’s Super Bonus Pick’em Game and the separation of Wild and Scatter symbols. Thunderspin’s portfolio showcases a variety of themes and mechanics, indicating their commitment to diversity and quality in the iGaming industry.

How To Play

  • Start by setting your desired bet level using the plus and minus buttons, with options ranging from $0.01 to $100 per spin.
  • Adjust the number of paylines you wish to activate, if the game allows for variable paylines.
  • Review the paytable for information on payouts, symbols, and bonus features.
  • Press the spin button to start the game and watch the reels spin.
  • Look out for special symbols such as Scatters and Wilds to trigger bonus features or complete winning combinations.
  • If you trigger the Free Spins feature, select your special expanding symbol if required and start the bonus round.
  • Fill the Super Bonus meter during Free Spins to unlock the Pick’em Game for additional multipliers and prizes.
  • Manage your bankroll responsibly and adjust your bet settings as needed throughout your gaming session.


Book of Jam by Thunderspin is a refreshing take on the traditional slot game format, offering a unique blend of engaging gameplay, innovative bonus features, and appealing visuals. With its garden-themed setting and the exciting Super Bonus Pick’em Game, it stands out in a crowded market. Despite its slightly lower RTP and high volatility, the game promises both fun and potential for significant payouts, making it a worthy addition to any slot enthusiast’s playlist.