Book of Helios Slot Review

Book of Helios Slot Review: Features, RTP and Free Spins

Book of Helios from Betsoft drops you straight into a Greek temple blazing with fire and gold, alongside Olivia Brave and the sun god Helios. The slot runs on a 5x3 layout with 10 fixed paylines, high volatility gameplay and a max win of 20,168x stake. The headline attraction is a free spins feature with classic expanding symbols mixed with win multipliers, backed by cinematic graphics and an epic orchestral soundtrack.

The theoretical RTP of Book of Helios sits at 95.58%, a touch below the figure many regulars look for, so this one feels more about explosive potential than grindy value. Spins can be very streaky, but when the bonus hits and the chosen symbol fills the reels, wins can climb fast, especially if Books expand with 5x multipliers. A bonus buy option lets you jump straight into that action.

Book of Helios Key Information

Book of Helios is a Betsoft video slot released on 30 June 2022, built on a 5x3 grid with 10 fixed paylines. Stakes run from 0.10 to 20.00 per spin, with a published RTP of 95.58% and high volatility maths. The theme follows Greek mythology, focusing on Helios and Olivia Brave, and the game also includes a bonus buy feature priced at 65.5x your chosen stake for instant access to free spins.

Symbols and Paytable in Book of Helios

The standout symbol in Book of Helios is the Book itself, pulling double duty as both wild and scatter. It appears only on reels 2, 3 and 4, where it substitutes for all regular symbols to complete line wins. Landing three Books in view pays and also triggers the free spins feature. Exact symbol values sit in the in-game paytable, reached via the information menu beside the reels.

During free spins a random symbol is selected to act as an expanding special. When a win is possible, that symbol grows to fill its reel and pays on all positions, ignoring the standard left-to-right rule. Wins in Book of Helios pay for two to five matches along the 10 fixed paylines, with the listed max win per line topping out at 20x your stake.

Symbols and Paytable

Symbol	Quantity	Payout
	5	x20
	4	x10
	3	x5
	2	x2
	5	x15
	4	x8
	3	x3
	2	x1
	5	x10
	4	x5
	3	x2
	2	x0.5
	5	x10
	4	x5
	3	x2
	2	x0.5
	5	x8
	4	x3
	3	x1
	5	x6
	4	x2
	3	x0.5
	5	x6
	4	x2
	3	x0.5
	5	x5
	4	x1
	3	x0.2
	5	x5
	4	x1
	3	x0.2
	Scatter, Wild

How to Play Book of Helios

Getting started with Book of Helios is very simple. First, pick your stake using the plus and minus controls under the reels, between 0.10 and 20.00 per spin. All 10 paylines stay active on every spin, so you do not need to adjust lines. When you are happy with the stake, hit the main spin button in the centre to play a single round at that wager.

Wins arrive when two to five matching symbols land along a payline from the leftmost reel. Only the highest win per line pays, but wins across different lines are added together. There are no cascades, nudges or gamble games in Book of Helios, and the focus stays on straightforward line hits. The Book symbol steps in as a wild on reels 2 to 4, helping complete those combinations.

If you prefer a steadier session, you can set up autoplay for a block of spins with options to stop on a single big hit or a set loss. Sound controls sit in the settings menu, letting you switch the soundtrack or effects off. On mobile browsers Book of Helios runs cleanly; buttons are spaced well and spins feel crisp even when you shorten the animation time.

Book of Helios Features and Bonuses

Book of Helios keeps its feature set tight but punchy. The Book symbol drives everything, working as both scatter and expanding wild. Hit three Books on reels 2, 3 and 4 in a single spin and you trigger 10 free spins. Before the round begins, one regular symbol is randomly chosen to become the special expanding icon for the whole feature.

During free spins, whenever that chosen symbol can form a win, it expands to cover its reels and pays on all positions, not just along traditional paylines. At the same time any Book landing expands and reveals a random multiplier from 1x to 5x. That multiplier then applies to every win the Book helps create on that spin, giving the feature its punch.

For impatient players there is a bonus buy option priced at 65.5x stake, which takes you straight into the free spins round with a random expanding symbol selected. From my sessions this slot feels heavily weighted toward that feature for big wins; the base game can be quiet, but once multipliers land on top of full-screen expansions, the numbers can jump, reflecting the advertised max win of 20,168x.

Book of Helios Pros and Cons

Book of Helios has some clear strengths and a few drawbacks. On the positive side, the expanding-symbol free spins with up to 5x multipliers, combined with a bonus buy and a 20,168x max win, give serious hit potential and keep the gameplay tense. On the negative side, the single main bonus, lack of jackpots and a 95.58% RTP may put off players who prefer varied features or more generous maths.

Final Verdict - Should You Play Book of Helios?

For me, Book of Helios shines as a high-risk, high-reward option built around a familiar book mechanic with a fiery Greek twist. The presentation is strong, the soundtrack works, and the expanding symbol plus multiplier combo gives the bonus round enough depth to hold attention. If you enjoy tense streaks, chasing that one explosive feature, this slot ticks a lot of boxes.

That said, the slightly below-average RTP and long dry patches mean I would not pick Book of Helios for casual low-variance grinding. It suits experienced slot fans who accept swings and want a focused feature rather than a stack of side games. Treated as a volatile adventure with Olivia Brave and Helios, it offers thrilling peaks and the kind of bonus hits that stick in your mind.

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