Book of Sun
- RTP
- 95.02%
- Volatility
- LOW
- Max win
- 5,000×
- Hit freq
- -
- Grid
- -
- Bet
- -
- Released
- 2020-01-01
A playable demo is not available in your region.
Our take
3 Oaks' Egyptian book-game slot with 95.02% RTP, low volatility, and 5000× max win via expanding-symbol free spins.
Book of Sun represents 3 Oaks' entry into the crowded book-game niche, following the success of established franchises like Book of Dead and Book of Ra. The game adheres to the proven formula: Egyptian theming, ancient artefacts, and a bonus mechanic centred on expanding symbols during free spins. The 95.02% RTP and low volatility differentiate this release as a conservative, accessibility-focused title.
The book symbol triggers free spins and acts as the expanding wild throughout the bonus round. Landing consecutive book symbols extends free-spins allocation and locks the expanding wild position across subsequent respins, compounding payouts. Base-game mechanics remain straightforward, emphasising simplicity over innovation; the game prioritises engagement through session length rather than feature complexity.
Low volatility and the 95.02% RTP position Book of Sun for players seeking extended, low-risk sessions. The 5000× max-win cap mirrors competitors in the same volatility tier. Hit frequency leans towards frequent, modest wins; dramatic swings are minimal. 3 Oaks' newer market position means operator coverage is narrower than established franchises, though gradual adoption across licensed markets continues.
Pros
- Low volatility with 95.02% RTP ideal for extended, consistent-win sessions
- Classic Egyptian book-game formula proven by established franchises
- Expanding-symbol free-spins mechanic concentrates payouts in bonus rounds
- 5000× max win achievable through consecutive book-symbol stacking
- Straightforward mechanics reduce learning curve for new players
Cons
- Book-game formula lacks innovation; limited differentiation vs. Book of Ra/Book of Dead
- Low volatility caps appeal for players seeking dramatic wins or high-variance excitement
- Operator coverage narrower than established competitors; availability spotty globally
- Max-win probability and hit frequency not independently published
- 3 Oaks' market presence nascent; long-term operator relationships untested
Math breakdown
- Volatility score
- 3 / 5
- Max win
- 5,000x the stake
FAQ
- How does the book free-spins feature work?
- Land the book symbol to trigger free spins. The book acts as an expanding wild, locking in position and respinning remaining reels to compound wins.
- What is the RTP and volatility?
- 95.02% RTP under low volatility; expect frequent, modest wins and minimal downside swings.
- What is the maximum possible win?
- 5000× your stake, achievable through consecutive book-symbol triggers and expanding-wild stacking during free spins.
- Is this a new franchise?
- No; 3 Oaks is a newer provider (established 2021), but Book of Sun follows the proven book-game genre established by franchises like Book of Ra.
- What is the theme?
- Ancient Egypt, with artefacts, hieroglyphics, and traditional archaeological imagery throughout.



