Book of Helios Slot

Book-Of-Helios featured image

Technical Table Information

RTP (return to player):95.58%
Casino Gaming Developer:Betsoft
Release Date:30.06.2022
Maximum Multiplier:20,168x
Winning Lines:10
Min bet: 0.20
Max bet: 20
Provably Fair:No
Jackpot: No
Technology used:HTML5
Theme slot: Greek Mythology
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Description of the Slot 

The brave explorer, Olivia Wood, has made her way into Helios’s hidden temple. Helios, also known as Hyperion, is the Greek sun god known for his fury and might. Olivia’s quest in the latest Betsoft slot involves finding the mysterious Book of Helios, which can gain her valuable insights and power. 

The Book of Helios online slot is created on a 5×3 grid panel and offers 10 fixed paylines. Behind the simplicity of reels is a special bonus feature where you can take advantage of expanding symbols and free spins. But the task is not that easy since the wary eyes of Helios keep a constant watch on you. So, would you help Olivia in finding the hidden book? If yes, then let’s dig a bit deeper into the slot.  

Design and Audio 

The Book of Helios is hidden somewhere inside the Greek temple of Helios. Everything here, including the reels, is made up of stone. Guarding over the reels is none other than the statue of Helios on his chariot. A mere glance into the Greek god’s eyes reveals his wrathful nature. 

The roof crumbles slightly each time you hit the spin button, and debris dust drops down on the transparent reels. A piece of grand music plays in the background, accompanied by the clinking of stone slabs. Overall, the visuals and soundtrack are good and render a realistic effect.


Book of Helios concentrates everything on a single free spins bonus feature. But it has a couple of special symbols that elevate the gameplay and payouts. 

Free Spins 

The ‘Book of Helios’ symbol is the game’s most important icon: it is both a wild and scatter symbol and appears only on the middle three reels. Hitting 3 scatters at once activates the bonus round with ten free spins. But before the feature kickstarts, a random symbol gets upgraded to become an expanding symbol. In the event the expanding symbol appears on at least 2 or 3 reels and forms a win, it vertically expands to cover the respective reels

Although the chosen symbols pay like regular ones, they pay even when not on adjacent reels. During the expansion, if the book symbol is also present on the grid, it covers the respective reel and reveals a random multiplier between 1x to 5x. Also, the expanded scatter symbol substitutes for the special symbol and puts the multiplier into effect. Note that free spins cannot be retriggered. 

Buy Feature

Wish to enter the bonus game at once? Then purchase 10 free spins using the buy feature. To enable the bonus round, you have to pay 65.5x the current bet amount. The purchase option is not available in all regions. 


The bonus feature is not the only way to rake in big wins. The slot has an impressive paytable where even the low-paying symbols offer decent returns. Beginning from the lower end, 10 to A card royals offer 5x to 8x the stake for five matched ones. Among the higher-paying constituents are whips, bow and arrows, Oliver Wood, and the mighty Helios. These premium symbols offer in the range of 10x to 20x the stake for landing five identical ones

Note that premium symbols also offer payouts when two of a kind hit the payline. Stepping into the bonus round indeed increases the payout by a great margin. To be precise, the maximum payout the Book of Helios slot offers is a stellar 20,168.4x the stake


Although not as frequently mentioned as Zeus, Poseidon, Hercules or Achilles, Helios is an important figure in the Greek pantheon. Book of Helios showcases a fictional storyline where Olivia Wood is searching for a powerful book that contains the powers of Helios. 


Book of Helios is a highly volatile slot. The variance couldn’t be any lower for a slot offering the max win of over 20,000x the stake. This is because high volatility slots contain the best chances for landing impressive wins in a shorter session. However, they do not provide frequent wins and are considered highly risky. 


About the Game Provider 

Betsoft entered the igaming industry in the year 2016. One of the earlier achievements of the game provider included its skill in creating 3D games. But in 2016, the company switched to HTML5 from the somewhat outdated Flash technology. Since then, Betsoft’s output has been prolific and comprises several high-quality slots. In addition, Betsoft has partnered with many operators worldwide, and the list includes several top-tier hybrid and crypto casinos. 

Final Considerations 

Book of Helios’ strength lies in its payouts and theme. While we have seen countless slots on Zeus and Poseidon, the entry of Helios surely gives the game a refreshing vibe. The slot’s design is also up to the mark and successfully creates a thematic atmosphere. But like any other slot, this one is not without shortcomings either.  

First and foremost, the RTP of 95.58% fails to impress us, considering it doesn’t even hit the industry average of 96%. Also, things would be much better if the game provider added more variations to the slot instead of powering it with only one extended bonus feature. For the rest, Book of Helios qualifies as one of the finest Betsoft slots. 

Other Slots by Betsoft 

  • Mr. Macau
  • Lava Gold 
  • Super Sweets 
  • Reels of Wealth 


We have pointed out all the merits and shortcomings of Book of Helios along with an in-depth breakdown of the slot’s features, payouts and more. Let us know if you found the review helpful. Also, if you have questions regarding the slot, drop a message in the comment box. One of us will reach out to you sooner than expected! 


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