Book Of Ra
- RTP
- 92.13%
- Volatility
- HIGH
- Max win
- 5,000×
- Hit freq
- -
- Grid
- -
- Bet
- -
- Released
- 2005-03-03
A playable demo is not available in your region.
Our take
Greentube's iconic high-volatility Egyptian slot: 5×3, 9 paylines, expanding free spins, up to 5,000× max win.
Book of Ra stands as the foundational template for the book-slot archetype, released in 2005 and still commanding player loyalty two decades later. The slot operates on a 5×3, 9-payline grid with high volatility, positioning it squarely in the category of games where base-game payouts are modest but bonus features carry significant win potential. The published RTP is 92.13%, notably conservative compared to modern peers and reflecting its vintage mathematical tuning.
The core mechanic revolves around the Book of Ra scatter symbol. Land three or more books to trigger free spins, during which one symbol becomes randomly selected to expand fully across its reel throughout the bonus round. This expanding-symbol feature, now imitated across hundreds of successors, originated with Book of Ra and remains potent. Additional books landing during free spins retrigger the round, extending the feature and potentially raising the expanded symbol's reel positions.
The explorer premium symbol sits at the top of the pay table, though its value is bounded by the high volatility, limiting individual-spin ceilings. A gamble feature permits doubling wins on a card-flip, though this is purely optional. Minimum and maximum stakes span €0.01 to €45 across 1–9 selectable paylines, allowing fine-grained session customisation. Mobile compatibility is confirmed across iOS, Android, and desktop browsers.
Pros
- The original and still-compelling expanding-symbol mechanic during free spins
- Highly flexible payline selection (1–9 lines) for session budgeting
- 5,000× maximum win offers genuine max-win appeal for volatility seekers
Cons
- 92.13% RTP is significantly lower than most modern high-volatility competitors
- Base-game hit frequency and specific volatility metrics are not disclosed
- Two decades of clones means the theme and feature set feel dated to experienced players
Math & maxes
Math breakdown
- Volatility score
- 3 / 5
- Max win
- 5,000x the stake
Gameplay video
Videos open in-place on click. Some uploaders disable embedded playback — those will redirect to YouTube.
FAQ
How does the expanding symbol work?
During free spins triggered by the book scatter, one randomly selected symbol expands fully across its reel, multiplying wins formed with that symbol.
Can I retrigger free spins?
Yes, landing additional book scatters during the free-spins round adds more spins with no stated upper limit on retriggering.
What's the gamble feature?
After any win, you may gamble by guessing red or black on a card flip; correct guess doubles the win, incorrect guess forfeits it entirely.
