Play Demo
Book of Oaths slot takes the familiar Book of format and rebuilds the bonus round around a symbol collection trail, assigning two expanding symbols when free spins trigger. One stays fixed for the entire round while the other rotates to a new symbol each time it produces a win. As the trail fills, the final spin activates every symbol collected at once, turning what starts as a slow build into a potential full-grid payoff. The Egyptian theme is well executed, but that dual-symbol system is where the game earns its identity.
Three or more Book scatters landing anywhere on the reels trigger the free spins round. The backdrop shifts from desert daylight to a dark storm with lightning flickering behind distant pyramids, and the book opens to select two symbols. One is fixed for the entire round, expanding whenever it lands and stacking its collections, while the other alternates to a new symbol after each win it contributes to, progressing through the paytable one collection at a time.
Every expansion triggers a lightning strike across the reels with a sharp crack of thunder behind it, and since the final spin activates every symbol collected through the round at once, a full trail turns that last spin into a storm of consecutive expansions.
Three or more scatters during the feature retrigger additional spins, extending the window for the trail to advance. Since the Book scatter substitutes for every paying symbol on the grid, it contributes to line wins between triggers as well.
Four buy-in options let players skip the scatter hunt entirely. Ten spins cost 70× stake, fifteen cost 105×, and twenty cost 140×, with a randomised option at 100× that can award 10, 12, 15, 18, or 20 spins. Longer rounds give the collection trail more room to progress, which is why the 20-spin tier prices at a premium.
Separately, a Double Chance toggle on the left side of the screen adds 50% to each bet and doubles the probability of landing three scatters naturally. It works as a persistent side bet that stays active until manually switched off.
Sand drifts past the reels between spins while the grid sits inside a golden temple frame, sphinx statues tucked into the bottom corners and hieroglyphics scrolling faintly across the reel backing. The 5×3 layout runs ten fixed paylines left to right on consecutive reels, with the Book scatter landing and paying in any position.
A Double Chance toggle on the left of the screen increases each bet by 50% to double the scatter trigger rate, and autoplay offers turbo, quick spin, and skip-screens modes. Both the buy-in tiers and the Double Chance option are available in the demo.
| Symbol | ×5 | ×4 | ×3 | ×2 |
|---|---|---|---|---|
| Captain Jack | £50.00 | £10.00 | £1.00 | £0.10 |
| Anubis | £20.00 | £4.00 | £0.40 | £0.05 |
| Ankh | £7.50 | £1.00 | £0.30 | £0.05 |
| Scarab | £7.50 | £1.00 | £0.30 | £0.05 |
| Symbol | ×5 | ×4 | ×3 |
|---|---|---|---|
| A | £1.50 | £0.40 | £0.05 |
| K | £1.50 | £0.40 | £0.05 |
| Pyramid | £1.00 | £0.25 | £0.05 |
| Q | £1.00 | £0.25 | £0.05 |
| J | £1.00 | £0.25 | £0.05 |
Book of Oaths earns 3.7 out of 5 on the strength of its symbol collection trail. Most Book of slots assign one expanding symbol and let the free spins run, but this one uses two (a fixed symbol and a rotating one that progresses through the paytable) and saves a final spin where every collected symbol is active at once.
Standard play ran quiet for the first fifty spins, with small wins trickling in but nothing that shifted the balance in either direction. Switching on Double Chance added £0.50 to each spin, and around twenty spins later three Book scatters finally lined up to trigger ten free spins. J landed as the fixed symbol and the Scarab as alternating, which set a low ceiling on the round from the start. J is one of the cheapest symbols on the grid, so even when it expanded across a full reel the payline values stayed modest. Three Anubis symbols produced one win and six Scarabs generated another, but nothing that felt like the round was building toward a payoff. That changed on the final spin. Nine Scarab symbols filled the grid and delivered the session’s first meaningful result, bringing our total from that round to £49.50.
Buying twenty free spins at 140× stake, I committed £140 on a single feature entry. Captain Jack was assigned as fixed, Anubis as alternating. Two scatters appeared on separate spins without the third for a retrigger, and both times the near-miss stung harder than a blank spin would have. Around spin ten, Anubis landed, and Captain Jack followed a spin later, pushing the running total past £45. Pyramid became the next alternating symbol and connected shortly after, followed by J, which triggered a 25× stake win across multiple lines. All collected symbols went live on the final spin of that bought round, and wins landed from Pyramids, Captain Jack, and Queens simultaneously for a total of £95.50. Short of the £140 buy-in, but the acceleration was consistent across both bonus rounds tested for this review.
Later spins typically carry more weight as more symbols join the trail. That escalating structure borrows the progressive-collection concept familiar from fishing-themed slots but gives it a different rhythm through the fixed-and-alternating split, and it rewards longer free spin counts where the trail has space to fill.
Everything funnels into that single bonus round, though. There is no pick game, no hold-and-win grid, no secondary event to break up the rhythm between triggers. The trail carries it, but the feature menu is narrower than most slots at this price point, and how a session feels will depend almost entirely on how far the collection progresses and which symbols the book selects. A round built around Captain Jack expanding has a different upper limit than one built around J, and the player has no say in which one lands.
