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Book Of Fusion Slot

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Our rating:
  • A new ‘book of’ slot with some nice differences
  • Start off bonus with 2 expanding symbols
  • Earn more spins and turn all symbols expanding

Book of Fusion slot from Light and Wonder is one of the latest games to use the popular feature that players expect from a book of slot; that is the expanding symbols. These occur during the free spins bonus, but there is a twist here that we’ll come on to later. When it comes to the design and theme, it’s quite fun although it is a bit basic looking. There are 5 reels and 3 rows, giving you a total of 10 pay lines. Just spin the reels and try to get a winning combination from left to right using the base symbols. These are as follows, ranked in ascending order based on their value:

  • 10, Jack or Queen
  • King or Ace
  • Magnet or Charger
  • Switch or Tesla
  • Scientist or Book

There is a wild symbol as well, that both substitutes for all other symbols in a winning combination, and it has a scatter payout.

book of fusion slot gameplay


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Book Of Fusion Bonuses and Features

Free Spins Bonus. Land 3 or more book symbols and the free spins bonus is triggered, giving you 10 free spins. At the start of these, 2 symbols are chosen at random to be growing symbols. These will expand to fill the reels when they land, and don’t need to be adjacent to each other to pay out. If you retrigger the bonus with another 3 scatters, 2 additional symbols are chosen to be growing symbols. If you do this will all 10 symbols, you cannot retrigger the bonus. You cannot get the wild symbol as the growing symbol.

book of fusion slot rules


As the name suggests, Book of Fusions slot from Light and Wonder is another ‘book of’ game with the familiar feature of expanding symbols. This occurs during the free spins bonus, where 2 symbols are initially chosen, but you can actually keep retriggering the bonus until you get all 10 symbols to full expand when they land, not needing to be next to each other to pay out. It’s a nice change to see 2 symbols instead of 1, and the ability to get more so easily. The payouts here can be quite impressive, and despite the fairly simple design and gameplay, it’s enough of a change from other book of slots to warrant a go, so check it out if you enjoy other games in the series, it’s a good option.

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Potential For Lots Of Expanding Symbols





  • Turn all symbols into expanding ones.
  • Start off with 2 expanding symbols.

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