Book of Doom Slot Review
Book of Doom is a 5×3 Belatra Games slot with 10 paylines, free spins, a book-style expanding symbol mechanic and a jackpot side feature. It suits players who can handle high volatility and a below-average RTP.
This review looks at the 92.61% RTP version, the bonus-buy and jackpot-wheel layer, and why Book of Doom feels more like a volatile feature chase than a steady Egyptian line slot.
Book of Doom key information
| provider | Belatra Games |
| release date | 17 August 2020 |
| RTP | 92.61% |
| volatility | High |
| max win | 5000x |
| reels | 5 |
| paylines/ways | 10 paylines |
| min/max bet | 0.10-20 |
| theme | Ancient Egypt, books, temples |
| bonus buy | Yes |
Belatra’s public description confirms free spins, a Buy Bonus feature, a progressive jackpot and a risk/double option, while third-party catalogues usually add the 92.61% RTP, 0.10-20 bet range and 5000x max-win figures. Some sources describe the jackpot layer as a wheel bonus, so live details can vary by casino version.
How Book of Doom works
Book of Doom uses a classic 5×3 frame with 10 paylines, so the base game is easy to read from the start. Its core identity comes from the book-style feature rather than from constant side mechanics landing on every few spins.
The special book symbol can act as the trigger for free spins and then pick one regular symbol to expand during the bonus. That setup gives the slot a familiar Egyptian adventure rhythm, but the extra jackpot and bonus-buy options make it more aggressive than a plain old-school reel game.
Main features
- The book symbol can trigger free spins and select one expanding symbol for the full bonus round.
- Buy Bonus access can move players straight to the feature instead of waiting for a natural trigger.
- A jackpot side layer adds extra upside beyond standard line wins and the main free-spin mechanic.
- The risk/double option can raise a settled win quickly, but it can also erase that payout in one step.
Who will enjoy this slot
- Players who like Egyptian book slots with a simple reel map and a recognisable expanding-symbol bonus.
- Bonus hunters who prefer free-spin features and optional buy access over long feature-light sessions.
- High-variance players who can accept a low RTP version in exchange for a sharper feature-led payout profile.
Book of Doom combines high volatility with a 92.61% RTP version, so the session can feel dry when the feature does not arrive. The bonus-buy and risk/double options can increase short-term pressure further, which makes firm spend limits and a look at responsible gambling tools especially relevant here.
Bonus structure and payout profile
The base game is readable, but it is not especially generous on its own. With only 10 paylines and a lower RTP version, a lot of the slot’s value sits outside ordinary line hits.
Free spins are the main reason to play it. The selected expanding symbol can change a quiet round quickly, so the slot’s stronger results tend to cluster around the feature rather than around steady base-game wins.
The bonus-buy and risk options make that profile even more aggressive. They give faster access to upside, but they also raise exposure, so Book of Doom works better as a controlled high-risk play than as a relaxed long-session grinder.
Book of Doom versus two close alternatives
Book of Doom sits on the harsher side of Belatra’s catalogue because its common RTP figure is lower than that of several related titles. Cleo’s Book offers a much larger top end on a bigger ways setup, while Legacy of Doom keeps the Egyptian tone but uses a newer 10-line framework with stronger listed return figures.
| Slot | RTP | Volatility | Max win | Main hook | Best for |
| Book of Doom | 92.61% | High | 5000x | Book-style expanding-symbol free spins with a jackpot side layer | Players who want a simple but sharper Egyptian feature chase |
| Cleo’s Book | 96.01% | High | 50000x | 5×5, 3125-way Egyptian slot with free spins and stacked-symbol upside | Players who want a bigger modern ceiling from a similar theme |
| Legacy of Doom | 96.50% | High | 5000x | Later Belatra follow-up with 10 lines, buy-bonus access and jackpot support | Players who want the same mood with a stronger listed return |
FAQ
Most catalogue sources list the commonly distributed version of Book of Doom at 92.61% RTP, which is below the level many modern slots advertise.
The book symbol can trigger free spins and then choose one regular symbol to expand during the feature, which is where much of the slot’s upside is concentrated.
Yes. Belatra’s public game notes describe Book of Doom as a slot with a Buy Bonus feature, so some casinos can offer direct paid access to the main round.
No. The game is usually listed as high volatility, and its low RTP for this version means long dry spells are possible between stronger bonus results.
Game Screenshots
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