Book of Fire

Book of Fire by Merkur Gaming is a mystic-themed slot with a 5-reel, 10-line layout and very high volatility. The base game is built around classic reel play, while the feature set is centred on free games and expanding symbols. The game page can be used with the demo version to play for free and practice before playing for real money.

When 3 or more book symbols appear, the free games round is triggered with 10 free spins awarded. During this bonus feature, a special symbol is selected at random and expands across the reels, paying on all active lines. Free Games can also be retriggered, which increases the number of bonus rounds available in a session.

For players searching for Book of Fire slot play for free, the main details are the fixed reel count, line-based format and the bonus game structure. The title combines a supernatural theme with straightforward mechanics and a focus on feature-driven wins.