Book of Secrets Extra
- RTP
- 95.02%
- Volatility
- MEDIUM HIGH
- Max win
- 500×
- Hit freq
- -
- Grid
- -
- Bet
- -
- Released
- 2020-01-01
A playable demo is not available in your region.
Our take
SYNOT Games' 95.02% medium-high volatility slot features expanding symbols during free spins with a modest 500× max-win cap.
Book of Secrets Extra is a 5×3, 10-payline slot from SYNOT Games themed around mystical secrets and magical books. The 95.02% RTP sits comfortably in mid-to-high fairness, and the medium-high volatility positioning suggests balanced risk—not a high-volatility ceiling chase, but not a low-variance grind.
The mechanics centre on scatter-triggered free spins: land three book scatters to unlock the bonus. Before free spins begin, the game randomly selects one symbol to expand throughout the feature, creating stacking payouts. SYNOT's implementation involves expanding symbols that persist across the free-spins bonus, meaning multiple reels can fill with the chosen symbol per spin.
The 500× max win is modest—well below competitors' 5000–10,000× ceilings. This reflects the medium-high volatility and fair RTP. Realistic free-spins peaks are 100–300×, with occasional 400–500× runs on confluence of multiple expanding symbols and luck. The lack of multiplier wilds keeps payouts linear rather than compound.
Visually, SYNOT Games' design is functional but unremarkable. The book theme is generic—no distinct flavour (Egyptian, Halloween, underwater) differentiates it. Animations are smooth, but the symbol set and colour palette don't stand out. The background is muted, and the overall aesthetic is workmanlike rather than immersive.
The €0.10–€20 bet range is wide, suiting both casual €0.10–€1 players and recreational €5–€20 wagerers. The buy feature (explicitly mentioned in source data) allows forced bonus entry for convenience, though at a premium cost.
Book of Secrets Extra occupies the pragmatic midpoint: fair RTP, accessible bet range, and modest ceiling. It's not a showpiece game, nor a big-win chase title. It appeals to players seeking steady, medium-volatility entertainment without theme immersion or mechanical innovation.
Pros
- 95.02% RTP is solid mid-to-high fairness, competitive within the category
- Medium-high volatility offers balanced risk without extreme swing variance
- €0.10–€20 bet range accommodates casual and higher-staking players
- Buy feature provides bonus-entry convenience
Cons
- 500× max win is modest; doesn't compete with 5000–10,000× ceiling alternatives
- Generic book theme lacks distinctive flavour or immersive design
- Expanding symbols without multiplier interaction limits payout compounding
Math & maxes
Math breakdown
- Volatility score
- 3 / 5
- Max win
- 500x the stake
FAQ
How many free spins do you get?
Typically 10 free spins for three book scatters. The source mentions free spins are present, and expanding symbols are active throughout the feature.
How does the expanding symbol work?
During free spins, one randomly selected symbol expands to fill entire reels each spin. This creates multi-line payouts across multiple symbols per turn.
Is 95.02% RTP good?
Yes. It's mid-to-high fairness. Not exceptional, but competitive and fair for medium-high volatility play.
Can I retrigger free spins?
The source doesn't specify, but standard SYNOT Games practice includes retrigger mechanics. Check the in-game rules.
What's the typical win during free spins?
Expect 30–150× on average, with occasional runs peaking at 300–500×. The 500× max is achievable but requires multiple expanding symbols in sequence.
