Pros
- Maximum win is large
- Free spins have expanding symbols
- US player friendly
Cons
- RTP is under average
- Bonus buy available outside of UK
Contents
Book of Helios Review Introduction
The Book of Helios online slot is one of the many titles you can enjoy here on our website. With five reels and ten paylines for you to play on, there is a chance that you could walk away with the top jackpot prize of 20,168x your total bet. Bonus features such as the free spins round can increase your wins. Find out more in this review.
Overall Theme
The Book of Helios Betsoft slot is all about a female adventurer on a quest to take some riches from a temple dedicated to the god Helios. Online slots often use Greek gods for their theme.
The slot has been produced to a very high level. Players can look forward to well-designed symbols, brilliant visuals and some pretty cool animations too.
If you are playing this at an online casino for free, then you may want to check out the Rainbow Riches slot too. We have lots of free slots like this available on our website.
Book of Helios RTP and Variance
All online slots come with their own maths model. No matter what online casino you are playing at or even if you are playing free slots, it’s important to understand these aspects to be able to play responsibly.
The RTP of Book of Helios is below average, sitting at 95.58%. It’s only half a percentage out, so it’s not too disappointing. The variance is high, so that adds risk to the slot. It means that the wins are generous but you will need some patience and a bigger bankroll to keep the gameplay going.
How to Play Book of Helios
If you want to play this game as one of our free slots, here is a quick guide. Every online casino will host this game with the same controls.
- Adjust bets by using the plus and minus buttons at the bottom of the screen.
- The large spin button will make the reels spin once for your chosen bet amount.
- The autoplay button sits next to this, and this is where you can set the reels spinning on their own.
- The information button will display the game rules and paytable.
- The shopping trolley is the buy bonus, and if it is available you can click on this to activate the feature.
Bet Sizes & Paytable Wins
Free slots and online casino games for real money have betting ranges that vary. In Book of Helios the minimum bet is 0.1 coins and the maximum is 10 coins.
All symbols in the game need to land in combinations of three to five in order to pay out. Below are the top payouts available for each symbol type.
10 & J - 5x multiplier
Q & K - 6x multiplier
A - 8x multiplier
Whip & Bow and Arrow - 10x multiplier
Adventurer - 15x multiplier
Helios - 20x multiplier
Book of Helios Bonus Features
Free Spins
Landing three book scatter symbols at the same time will trigger the free spins round. You start out with ten free spins and a random symbol is chosen to be the special expanding one. Whenever this symbol lands on the reels, it will expand to cover that entire reel and pays out even when it’s not adjacent to a similar symbol.
As well as this, the scatter book symbol will expand during the free spins round. They also substitute in for all other symbols in the game during the round, which is useful for payouts.
Bonus Buy
Players from certain territories out of the UK can access the bonus buy feature. This allows you to directly enter the free spins round by paying out 65.50x your bet.
Conclusion
There are so many online slots out there with the 'Book of' aspect to them, and this one has done it well. The mythology elements have been combined well with the soundtrack and overall look of the game.
Over time to the gameplay can become a little bit repetitive, and it has the standard 'Book of' mechanic without bringing anything new to the table. However, the maximum win potential is incredible, and this is sure to bring players in.
| Slot Name: | Book of Helios |
|---|---|
| Software: | Betsoft |
| RTP: | 95.58% |
| Volatility: | High volatility |
| Paylines: | 10 |
| Reels: | 5 |
| Min Bet (all lines covered): | £0.10 (GBP) |
| Max Bet: | £10 (GBP) |
| Top Win: | 20168 |
| Features: | Wild Symbol, Scatter Symbol, Multiplier, Free Spins, High volatility, 5 Reels, Book Of... |
| Themes: | Ancient Greece |
| Last Update: | 29/06/2026 |
Available in UK?
|
No. :maker does not have a UKGC license and cannot offer their games at UK licensed casinos. |
FAQs
Is there a free spins round in the Book of Helios slot?
Yes, landing three book scatter symbols will trigger the free spins round with ten free spins and a random expanding symbols. It doesn’t have any retriggers available. However, the book symbols can get you win multipliers of up to 5x, so there’s a lot of winning potential in the round.
What does the variance say about the Book of Helios slot?
The volatility of this slot is high, so players need to be ready for the swings and roundabouts that could take a toll on their bankroll. The hit frequency is 35.03%. This means on average you could expect to land a win once for every three spins of the reels.
Are the scatter and wild symbols the same in Book of Helios?
There is only one special symbol available in the Book of Helios. This symbol is the book, and it works as both the wild and scatter for the slot. It means that it can substitute in for other symbols and complete winning combinations as well as triggering the free spins round.
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| Slot Name: | Book of Helios |
|---|---|
| Software: | Betsoft |
| RTP: | 95.58% |
| Volatility: | High volatility |
| Paylines: | 10 |
| Reels: | 5 |
| Min Bet (all lines covered): | £0.10 (GBP) |
| Max Bet: | £10 (GBP) |
| Top Win: | 20168 |
| Features: | Wild Symbol, Scatter Symbol, Multiplier, Free Spins, High volatility, 5 Reels, Book Of... |
| Themes: | Ancient Greece |
| Last Update: | 29/06/2026 |
|
Available in UK?
|
No. :maker does not have a UKGC license and cannot offer their games at UK licensed casinos. |
