Book of Old Ra

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20 Free Spins

Wagering requirement: x30
Valid on Book of Old Ra only
Expires in 7 days

The Ancient Mechanics Unveiled

Book of Old Ra runs on a classic 5-reel, 3-row slot framework with 10 fixed paylines, presenting genuine Egyptian temple adventure through cascading symbol dynamics. The main mechanism centers on the sacred book icon performing double duty as both wild and scatter, unlocking the sought-after free spins feature when three or more land anywhere across the reels.

Within the free spins bonus session, a randomly designated expanding symbol converts standard play into high-volatility treasure seeking. This selected icon expands to occupy complete reels when landing in adequate quantity, ignoring conventional payline constraints and assessing wins across all positions. The probability model uses medium-to-high variance paired with an RTP of 96.1%, striking balance between frequent modest wins and significant bonus opportunities.

The gamble mechanic introduces strategic complexity, granting players the choice to double winnings up to five consecutive times via card color prediction. Each correct gamble multiplies the active win by 2x, whereas failure surrenders the total amount. This risk-reward element integrates smoothly with the base game's autoplay capability, accommodating up to 100 automated spins with adjustable loss and win thresholds.

Verified Specifications

Version: 2.4.1

Size: 78 MB

Developer: Novomatic Interactive

Age Rating: 18+

Requirements: Android 6.0 or higher

Language: English, German, Spanish, Italian

Last Updated: 01.08.2026

Release Date: August 2026

What Lies Within the Temple

Expanding Symbol System

Throughout free spins, one randomly picked symbol expands to occupy complete reels, generating substantial win potential by disregarding payline limitations. The expansion activates when adequate matching symbols appear, computing payouts across all visible positions instead of traditional left-to-right patterns.

Book Wild & Scatter

The enigmatic book performs dual roles as both wild replacement for all symbols and scatter activator. Three or more books anywhere on the reels initiate 10 free spins with the expanding symbol mechanic, while book symbols persist as substitutes during base gameplay for improved winning combinations.

Gamble Ladder Feature

Each winning spin reveals the optional gamble function, offering a card color prediction trial. Accurate guessing of red or black doubles the present win, with up to five consecutive correct gambles achievable. The ladder shows potential prizes at each level, with a collect choice available after each successful prediction.

Autoplay with Limits

Set up automated gameplay for up to 100 consecutive spins with precise control over termination conditions. Establish maximum single win caps, total loss boundaries, and free spins trigger settings. The system halts automatically when bonus features launch, enabling manual control during high-value sessions.

High Volatility Math

The game utilizes a medium-high variance probability model with 96.1% theoretical return to player. This setup generates less frequent but considerably larger wins compared to low-variance slots, with maximum potential hitting 5,000x bet during ideal expanding symbol scenarios in free spins mode.

Adjustable Bet Range

Stake setup accommodates players from 0.10 to 100.00 credits per spin across 10 fixed paylines, equating to 0.01 to 10.00 credits per line. The interface offers quick bet modification buttons alongside manual entry, with total stake and line bet amounts shown simultaneously for clear wagering control.

Core Game Systems

Reel Configuration

5 vertical reels with 3 visible symbol rows forming 15 positions per spin
10 fixed paylines proceeding left to right across predetermined patterns
Symbol assessment happens simultaneously across all active lines after reel halt
Winning sequences demand minimum 3 matching symbols on consecutive reels from leftmost position

Bonus Trigger Logic

Book scatter symbols register in any position across all reels independent of payline
Three or more book symbols activate 10 free spins with expanding symbol designation
Retrigger feasible during free spins with supplementary 10 spins granted per trigger
Expanding symbol selected randomly before first free spin starts, stays constant throughout feature

About the Developer

Developer: Novomatic Interactive

Current Version: 2.4.1

Platform: Android 6.0+

Released: August 2026

Novomatic Interactive has focused on land-based casino adaptations for mobile platforms since 2012, delivering proven cabinet games to digital audiences with authentic mechanics preservation.