Trusted Casinos

Trusted Casinos Sign


Reviews Sign

Licensed by The UK Gambling Commission

United Kingdom Legal & Licensed Sign

Book of Helios Slot Machine – Free Play & Review

Even though this is one of the many Book-style slot machines that we’ve seen over the last couple of decades, there is something new as well. That would be the use of Ancient Greek deities as inspiration, and of course Helios is in the main role here, as the god of the Sun.

Showing us the inside of a temple behind the reels, there are five Royals (10 to A) added to them, along with top symbols displaying whips, bow and arrow, adventurer, and Helios. The Book is the only feature symbol.


Betsoft has been around the block for quite some time, so it’s one of the more experienced developers of slot machines right now. With over 200 excellent games to choose from, it’s a collection that I’d recommend you check out for yourself.

Basic Information

Free Spins
Wild Symbol
Special Bonus Game
Online & Mobile
Book of Helios screenshot 1
Book of Helios screenshot 2

  • 100% Up to £200 New Players Only
  • - Top Online Casino, Live & Mobile 2023!
  • - UK Legal & Licensed,

How To Play It

You don’t need to spend too much, in order to get the slot started. In fact, you can only place a wager between $0.10 and $10, so it’s a very limited betting range.

The game area is standard, at least for a Book style release. It’s getting 5×3 reels with only 10 active lines.

Special Features

Book of Helios is an impressive slot machine when it comes to sheer potential, but let’s see how it manages to pay so well.

The basic Book symbol is present on the reels, and as usual it will be both a wild and a scatter. The difference is that you get it only on the middle three reels. Either way, when properly positioned it will be helpful as a substitute and it will help you create more combinations.

What you’re really aiming for, is a feature with 10 free spins, which requires having all 3 Book symbols present. The free spins are getting a special symbol, chosen at random. It gets the ability to expand on the reels it lands on.

These special symbols expand when they show up on 2-3+ reels, if they can form a combination as a result. They don’t need to be on adjacent reels, in order to pay on all lines.

Additionally, it’s possible to get Book scatters at the same time, and these are able to expand as well. They will have a random multiplier, of up to 5x, which gets applied to all wins. These wilds can contribute to all winning combinations, even to those formed with special symbols.

The multiplier of the wild would be the thing that’s new here, but on the other hand you’re not able to retrigger the free spins.

Maximum Payouts

With help from its multiplier wilds, Book of Helios is capable of great things. While the regular Book slot will pay up to 5,000x the stake, this one goes much higher. A maximum win of 20,168x is possible, and that’s one of the highest payouts I’ve seen mentioned for a Book slot so far.

Like other Book titles, this one is also highly volatile. Many have an RTP of 96% or higher, but in this case we’re looking at a 96.58% value, which is below the average.


Book of Helios promises to pay big, and that’s what a lot of players want to hear. They did this with help from expanding multiplier wilds, but they also took away the ability to retrigger the slot’s free spins, which seems to make it even more volatile.

Book of Helios Slot Machine For Real Money Now:

Casino Bonus Whats great here? Visit
100 Up TO£200 T&Cs Apply 18+
  • 100% Up to £200 New Players Only
  • - Top Online Casino, Live & Mobile 2023!
  • - UK Legal & Licensed,
100% Up TO£200 T&Cs Apply 18+
  • - Up to £200 Welcome Deposit Bonus
  • - VIP Loyalty Program
  • - Online, Mobile & Live Dealer Casino UK Legal & Licensed,
Up TO£400 T&Cs Apply 18+
  • Up to 150 Free Spins & £400 in Deposit Bonus New Customers Only
  • - Top 3 Online Casino 2021
  • - UK Licensed,