Book of Inferno Demo Slot by Quickspin Free Play

Book of Inferno is an online Slot from Quickspin.

Quick Facts

- Layout: 5 reels x 3 rows

- Paylines: 10 fixed

- Key mechanics: Expanding Pay Anywhere Symbols, Symbol Upgrade Feature, Marked Symbols

- Special symbols: Book (Wild Scatter), Anna the Demon Huntress

How the Game Plays

Descend into the fiery pits of hell where Anna the Explorer takes on a new role as a Demon Huntress. Set against a backdrop of glowing lava and jagged rocks, this 5x3 slot by Quickspin offers a dark twist on the classic "Book of" genre. Winning combinations land across 10 fixed lines, featuring high-paying demonic characters like the Commander, Lady, and Lord of Hell. The grimy, heavy soundtrack and high-quality animations create an oppressive yet compelling atmosphere as you hunt for infernal treasures.

Free Spins Explained

Landing three or more Book symbols triggers the bonus round, awarding up to 25 free spins depending on the number of scatters. At the start of the feature, a random symbol is chosen to be "Marked." During the round, these symbols expand to cover entire reels and pay from any position—regardless of adjacency—if enough land to form a win. Retriggers are possible by landing more scatters, which provide additional spins and further opportunities for expansion.

Marked Symbols & Upgrades Explained

In both the base game and free spins, any regular symbol can become "Marked." If a Book symbol lands alongside a Marked symbol, the unique Symbol Upgrade mechanic kicks in, promoting the marked icon to the next higher-paying symbol on the paytable. This can lead to chain reactions where low-value symbols transform into premium characters, triggering full-screen expansions for the game's most significant rewards.

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