Play Book of Oaths Online

Book of Oaths: Storm Gaming's Adventure-Book Slot

Book of Oaths is a five-reel video slot from UK studio Storm Gaming, built around the familiar "Book of" adventure template. It runs on a 5x3 grid with 10 paylines and pairs a fantasy theme with a scatter-triggered bonus that fans of the genre will recognize. The free demo loads straight in your browser on play credits, so you can get a feel for the reels before deciding whether the game suits your style.

Reels, Paylines and Betting Range

The layout is a classic 5x3 set of reels with 10 paylines that pay left to right from the leftmost reel. Stakes run from 0.10 up to 100 per spin, which gives the game a wide enough span to cover casual sessions and higher-stake play alike. The bet you set covers all 10 lines on every spin, keeping the maths straightforward and the interface uncluttered.

The Book Symbol and the Bonus Trigger

As with most titles in this category, the book is the key symbol and acts as the scatter that triggers the bonus. Landing enough books on the reels at once opens the bonus spins round, which is where the game's headline feature comes into play. For the exact value of each symbol and how wins are formed, open the in-game paytable from the demo.

Bonus Spins: Locked and Changing Symbols

The book scatters trigger the bonus spins feature. According to Storm Gaming, the round is built around locked and changing symbols that build towards an exciting final spin, rather than the single random expanding symbol seen in many other "Book of" titles. A Feature Buy option is also available in permitted jurisdictions, letting you purchase entry to the bonus directly. Exact spin counts, the way symbols lock and change, and any retrigger rules are shown in the in-game paytable, which you can open from the demo.

RTP and Volatility

Book of Oaths runs at a 96% RTP, placing it right on the widely cited industry average. That is a fair, middle-of-the-road return rather than a standout in either direction. Volatility sits in the medium band, meaning you can expect a mix of modest base-game wins punctuated by the more impactful bonus spins round. RTP is a long-run average, so individual sessions will swing above and below it; the bonus feature is where most of the win potential is concentrated. If you play at a live casino, confirm the configured RTP in the in-game info panel, since operators can sometimes run alternative settings.

Playing on Mobile

Book of Oaths is built in HTML5, so it runs directly in any modern mobile browser on iOS and Android with no app download. The reels and controls are sized for readable portrait play, the touch controls mirror the desktop buttons, and the bonus spins feature behaves identically across devices. Nothing is stripped out for smaller screens.

Similar Storm Gaming Slots to Try

Storm Gaming's catalog is smaller than the big studios' but spans a range of themes and mechanics. If you enjoy Book of Oaths, these same-studio titles are worth a demo spin:

• Magic Merlin Megaways — a fantasy-themed Megaways title with shifting ways to win.
• Arto & The 7 Deadly Spins Megaways — the studio's higher-variance Megaways entry.
• Bar-X Triple Play Megaways — a classic Bar-X feel updated with the Megaways engine.

You can browse the full studio range on the Storm Gaming provider page.

Try the Free Demo First

Book of Oaths is a clean, recognizable take on the book-adventure formula: a 5x3 grid, 10 paylines, a scatter book, and a bonus spins round driven by locked and changing symbols that build to a final spin. The 96% RTP and medium volatility make it an accessible option for fans of the genre. The best way to judge whether the variance and feature pacing suit you is to load the free demo above and play a handful of spins on credits before committing anywhere.

For responsible play support, our Responsible Gaming guide offers free and independent guidance.