The title has really amazing graphics, made in a cartoonish humorous style. The playing field is a stone wall with symbols replacing each other, above which the slot logo rises. In the background, green firs are swaying in the wind and it will seem to you that either enemies or brave heroes of the slot - soldiers of the Order of the Peregrin - are hiding between the trees!
The music in the game is combative and heroic, in a word, ideal for the theme of warriors and battles. However, after half an hour of playing you will get bored with it, because the melody is very monotonous.
On the reels, the card suits of clubs, spades, diamonds and hearts make up the lower-paying symbols. These are joined by axes, swords, hammers and a few characters. The king symbol is the most lucrative.
The game’s Wild is a coin with a large W, and it pays just as much as the king symbol. In this game, the Scatter symbol is represented by a book with ornaments and a lock. Having 2 Scatter symbols anywhere on the grid grants you a Power-Up that will be activated every time you trigger the bonus rounds.
You need 3, 4, or 5 books to enter the free spins round, which play out on 3, 4, or 5 rows and 10, 20, or 40 paylines respectively. All collected free spins are added on to a basic 7 games. Any accumulated expanding symbols will fill their reels and don’t have to be on connected reels to pay their prizes, while the multiplier built up in the base games will apply to wins from expanded symbols.
The Order of the Penguin lay a bold claim to the Book of Books being all-powerful, which, as crazy as that sounds, may hold some methodic truth behind the madness. While some may prefer more base game features, Book of Books’ appeal lies in building the starting values of bonus games with Power-Ups. The number of spins, amount of expanding symbols and expanding win multiplier can have a significant effect to a varying degree on bonus game outcomes and potential.