Book of Helios Slot: Comprehensive Data Analysis
Core Game Specifications
| Attribute | Value |
|---|---|
| Developer | Betsoft |
| Release Date | June 30, 2022 |
| Theme | Greek Mythology, Adventure, Books |
| Layout | 5 reels, 3 rows, 10 paylines |
| Paylines | 10 |
| Bet Range | 0.10–10 (some sources say up to 20) |
| Core Mechanics | Book symbol as Wild and Scatter, Free Spins with Expanding Symbol, Win multipliers up to 5× during Free Spins, Bonus Buy feature |
| Software Provider | Betsoft |
| Platform Compatibility | Desktop and mobile (iOS/Android) |
Mathematical & Payout Model
Return to Player (RTP)
95.58%
Volatility
High
Hit Frequency
35.0%
Max Win Potential
20168x
Symbols & Paytable Hierarchy
| Tier | Symbol(s) | Function & Value |
|---|---|---|
| Low Tier | 10, J, Q, K, A | Provides small, frequent wins to maintain gameplay. |
| Mid Tier | Whip, Crossbow, Lasso, Explorer (Olivia Brave) | Thematic items offering moderate payouts. |
| High Tier | Helios | Highest paying symbols. Top hits available with full combinations. |
| Wild | Book | Acts as a substitute / feature trigger per game rules. |
| Scatter | Book | Triggers free spins / bonus round when enough appear. |
Book of Helios Bonus Features Mechanics
| Feature | Trigger | Initial Award | Core Mechanic | Enhancement/Retrigger |
|---|---|---|---|---|
| Free Spins | 3 Book symbols (Wild/Scatter) | 10 free spins | One random symbol becomes expanding for the feature. | Book symbols expand and reveal a 1×–5× multiplier. |
| Bonus Buy | Player choice | Immediate Free Spins | Pay 65.5× bet to access Free Spins directly. |
Frequently Asked Questions (FAQ)
| What is the RTP of Book of Helios? | The theoretical RTP is 95.58%. |
| What is the maximum win multiplier? | You can win up to approximately 20,168× your stake. |
| How do I trigger the Free Spins feature? | Land 3 Book symbols (which act as both Wild and Scatter) to trigger 10 free spins. |
| What special symbols are in the Free Spins? | A random symbol becomes expanding, and Book symbols expand with a 1×–5× multiplier. |
| Can I buy the Free Spins feature? | Yes, you can use the Bonus Buy option to access Free Spins for 65.5× your bet. |
| What is the volatility of the game? | The slot has high volatility. |
| How many paylines does the game have? | There are 10 fixed paylines. |
| Is the game mobile‑friendly? | Yes, it is fully playable on both desktop and mobile devices. |
Book of Helios Performance Summary: Strengths vs. Weaknesses
Strengths
- High max win potential (20,168×)
- Engaging Greek mythology theme
- Free Spins with expanding symbols and multipliers
- Bonus Buy for instant access
Weaknesses
- Below‑average RTP (95.58%)
- High volatility may deter casual players
Overview
Book of Helios is a high‑volatility video slot from Betsoft released on June 30, 2022. Set in ancient Greek mythology, it features 5 reels, 3 rows, and 10 paylines. The Book symbol acts as both Wild and Scatter, triggering 10 free spins with a randomly chosen expanding symbol and Book‑triggered multipliers up to 5×. A Bonus Buy option is available for 65.5× the bet. The RTP is 95.58%, and the maximum win is approximately 20,168× the stake.
Rachel Pine is our slots expert who has worked in the online gambling industry for 10+ years. Over the course of her career, Rachel has reviewed more than 30,000 slots.
Latest posts by Rachel Pine (see all)
- Best Online Casino Strategies That Actually Work - September 21, 2025
- Volatility in Online Casino Games - July 28, 2025
- Losing Streaks Explained: What Every Gambler Should Know - July 8, 2025