Book of Fusion Demo Slot by Light & Wonder Free Play

Book of Fusion is an online Slot from Light & Wonder.

Quick Facts

- Layout: 5 reels x 3 rows

- Paylines: 10 fixed

- Key mechanics: Expanding Symbols, Wild Scatter symbols, Bonus Buy (Buy Pass)

- Special symbols: Book Symbol (Wild and Scatter), Mad Scientist, Tesla Coil

How the Game Plays

Book of Fusion transports players into a high-voltage laboratory where steampunk aesthetics meet nuclear science. The game is set against a backdrop of complex machinery, glowing tubes, and electrical conduits. Winning combinations are formed by landing matching symbols across the 10 fixed paylines, starting from the leftmost reel. The symbol roster includes lower-value card royals alongside high-value scientific gadgets like magnets, meters, and generators, with the mad scientist serving as the highest-paying regular symbol.

Free Spins Explained

The core of the experience is triggered by landing three or more Book symbols anywhere on the grid. This award 10 free spins and a scatter payout. Unlike many games in this genre that select a single expanding symbol, Book of Fusion begins the bonus round by choosing two random symbols to act as special expanding symbols. When enough of these symbols land to form a win, they expand to cover their entire reels and pay out regardless of whether they are adjacent.

Symbol Fusion Feature

The bonus round can be retriggered by landing three or more Book scatters during the feature. Each retrigger awards an additional 10 free spins and selects two more symbols to become expanding symbols. This process can continue until all ten symbols on the paytable have been converted into expanding symbols, significantly increasing the potential for full-screen wins across the 10 paylines.

Click the Play for Free button to load the Book of Fusion demo, test its features and payouts and decide if it is a game you enjoy.