Book of 99

Book of 99

The slot game Book of 99 gives you the chance to win up to 5,000x your bet, as well as Free Spins and Expanding symbols, so there's plenty of prizes up for grabs. 

    Book of 99 Game Overview

    The bet sizes available in Book of 99 range from 10p to £50.  

    Betting in this game is fixed at 10 paylines. 


    This game features a collection meter ranging from zero to 99.

    Every Wild that appears during the main game will be collected and increase the meter by one. 

    Once you've collect 99 Wilds and Free Spins has been enabled, the meter will reset to zero. 

    Any Wilds collected over 99 will be added to the meter once it's reset (e.g. if 101 Wilds have been collected, the meter will reset to two).

    Landing three Wilds at the same time as completing a collection will see the triggering Wild played first followed by Free Spins.

    The average bet size must be an integer multiple of the minimum bet - if it's not, it will be rounded according to the rules of stochastic rounding.

     Malfunction voids all pays and plays throughout this game.

    Free Spins

    You can trigger Free Spins two ways:

    • Land three or more Wild symbols anywhere on the reels (the bet size used will be the same as the triggering spin)
    • Collect enough Wild symbols to complete the collection (the bet size used will be the weighted average of the bet sizes used when collecting each Wild)

    Regardless of how Free Spins is triggered, you'll win 10 free spins. 

    Land three or more Wilds during the bonus to win another 10 spins. 

    One regular symbol is randomly chosen at the start of the round as the special symbol - it will be the special symbol for the duration of Free Spins. 

    Normal wins pay out at the end of each spin.

    Once wins have been awarded, if there are enough special symbols present (two for high-paying symbols; three for low-paying symbols), they will expand to cover the whole reel.

    Expanded special symbols pay out for all 10 lines, regardless of their horizontal position, according to the number of symbols and corresponding paytable value. 

    Existing Wild symbols are not included in the expanded special symbol payout.

    Return to Player 

    Return to Player (RTP): 99.00%.

    The expected return is the amount we pay out to players relative to the amount of wagering on the game. 

    For example, if we take £100 of wagers we will, on average, pay out £99.00 of wins.