Book of the Damned

Launched on October 15, 2025, Book of the Damned from Rival software developer invites players into a world of secrecy and the supernatural. 

This slot blends a gothic, story-driven atmosphere with a high-risk design, creating a game that’s as intense as it is intriguing. 

With the potential to land wins of up to 10,000x, it’s built for those who enjoy bold mechanics, unpredictable swings, and a theme rooted in dark mystery.

Theme and Symbols

This online game unfolds within the shadowy halls of a mystical order, where hidden power and ancient relics take center stage. Every visual element reinforces the slot’s occult tone — from the eerie glow of the symbols to the Book of the Damned itself, which serves as the main icon. 

Rather than focusing on flashy effects, Rival has opted for depth and atmosphere, letting the dark, storybook style pull players into its world. The presentation feels cohesive and moody, perfectly aligned with the game’s extreme volatility.

Betting Options and Special Features

Book of the Damned runs on a 10-line setup and features extreme volatility, meaning long dry spells can quickly shift into significant payouts. With a top RTP setting of 96.11%, it sits just above the market average. 

The game’s structure rewards patience — spins may feel tense, but the potential returns justify the risk. This design caters to players who prefer volatile gameplay and substantial feature-driven payoffs rather than frequent, smaller wins.

Rival keeps the feature set focused but powerful, reinforcing the game’s high-stakes personality:

• Book of the Damned Wild/Scatter – This symbol performs double duty. It substitutes for other icons to complete winning combinations and also acts as a trigger for the Free Spins feature when three or more land.
• Cursed Expanding Symbol – During Free Spins, one symbol is chosen at random to expand vertically across the reels, often leading to screen-filling combinations and larger payouts.
• Gamble Feature – After a win, players can choose to gamble their payout for a chance to multiply it, offering an optional risk element.
• Bonus Buy – Those who prefer to skip the buildup can buy direct access to the Free Spins round, where the expanding symbol is active from the start.

Each feature complements the game’s high-volatility nature, ensuring that when wins hit, they can be memorable.

Conclusion

Book of the Damned is a striking addition to Rival’s lineup, built for players who enjoy dark themes and unpredictable gameplay. Its combination of expanding symbols, a gamble option, and a buy-in feature provides multiple paths to large rewards, though patience and a higher risk tolerance are essential. 

Compared to Rival’s other releases, this title leans heavily into tension and atmosphere, making it a solid pick for experienced players looking for a more suspenseful slot experience.