Book of the Sun
Egyptian Book slot focused on one expanding symbol
The SlotRanker Score is calculated from the visible data below. It is not affected by affiliate deals, and it cannot be bought.
Why this score
Partial data (71%)Five weighted signals shape the composite. Four context signals refine ties. See how we rate for the full methodology.
Popularity blends real player search demand (~30 markets) with a catalogue-derived proxy; games without measurable search demand use the proxy alone. Not live play telemetry.
SlotRanker Score: 72 — Book of the Sun by Pascal Gaming
https://slotranker.com/pascal-gaming/book-of-the-sun#scoreSlot Summary
How It Plays
Regular wins form from left to right across 10 fixed paylines on the 5x3 layout. The Book can substitute for ordinary symbols and also acts as the trigger symbol.
Most spins follow conventional payline evaluation, making the Book the result that changes the state of play. Once enough appear, the selected-symbol Free Spins round begins.
Theme & Atmosphere
Book of the Sun uses Ancient Egypt as its setting, pairing the Book and Sun themes with pharaohs, temples, hieroglyphic motifs, and desert-era iconography.
The presentation follows the established Egyptian Book archetype. Its visual hierarchy keeps the Book prominent because that symbol has both thematic and mechanical importance.
Features & Win Potential
Expanding Symbols appear during Free Spins after one regular symbol is chosen. A qualifying appearance can cover an entire reel and count across non-adjacent positions.
The Wild Symbol and Scatter Symbol share the same Book icon, so one symbol supports line formation and feature activation. A Multiplier can further increase qualifying awards.
Bonus & Free Spins
Free Spins begin after at least 3 Book Scatter Symbols appear. The round chooses one regular symbol as the Expanding Symbol before the first bonus spin.
Bonus Buy skips the natural trigger and opens Free Spins directly. Bonus Bet provides a separate stake option tied to increasing the chance of reaching the feature.
True Cost to Play
Expected average based on this slot's 96.23% RTP — individual sessions vary with volatility.
Estimate only, for entertainment purposes — treat gambling as entertainment, not a way to make money, and set a budget you can afford to lose.
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Compare Book of the Sun with other games
 Book of the Sun Score 72This game |  Pharaoh Mysteries Score 83 |  Ramses Book Flaming Link Score 82 |  Book of Eye Score 77 |  Book of Nibiru Score 72 | |
|---|---|---|---|---|---|
| Identity | |||||
| Studio | Onlyplay This provider has been reviewed and approved by the SlotRanker team. What does this mean? | ||||
| Released | — | 4/14/2023 | 2/25/2025 | 10/12/2021 | 11/17/2022 |
| Math | |||||
| RTP | 96.23% | 96.25% | 96.12% | 95.55% | 97.4% |
| Volatility | — | High volatility | High volatility | High volatility | High volatility |
| Max win | 10,000× | 50,000× | 12,200× | 55,000× | 5,000× |
| Format | |||||
| Reels | 5 | 5 | 5 | 5 | 5 |
| Layout | 5x3 | 5x3 | 5x3 | 5x3 | 5x3 |
| Paylines | 10 | 10 | 10 | 10 | 10 |
| Min bet | — | 0.1 | 0.1 | 1 | 0.1 |
| Max bet | — | 25 | 100 | 50 | 50 |
| Features | |||||
| Progressive | — | — | — | — | — |
| Wild symbol | ✓ | ✓ | ✓ | ✓ | ✓ |
| Free spins | ✓ | ✓ | ✓ | ✓ | ✓ |
| Scatter symbol | ✓ | ✓ | ✓ | — | ✓ |
| Multiplier | ✓ | ✓ | ✓ | ✓ | — |
| Bonus game | — | ✓ | ✓ | — | — |
| Respins | — | ✓ | ✓ | ✓ | — |
Every number is shown as a delta against Book of the Sun.
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Questions & Answers
Book of the Sun FAQ
The Book acts as both a Scatter Symbol and Wild Symbol, substituting in ordinary combinations while also helping trigger Free Spins.
Before Free Spins begin, one regular symbol is selected. When enough copies appear for a win, they can expand across their reels.
Yes. Bonus Buy provides direct access to the Free Spins round instead of requiring the necessary Scatter Symbols to land naturally.
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