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Home » Reels » 5 Reel » Book of Helios Slot Review
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Book of Helios Slot Review

Book of Helios is Betsoft’s latest addition to their popular series of ancient Egyptian-themed “Book of” slots like Book of Darkness and Book of Pyramids. The 5 reel, 3 row video slot takes the typical format further through special expanding reels and symbol multipliers during free spins for huge win potential. Centered around the Greek sun god Helios, vibrant graphics transport players directly into the temple to seek fortune alongside an adventurous female protagonist. Let’s uncover the riches within this highly rewarding slot.

Book of Helios Slot logo
BetSoft logo

Betsoft is a leading creator of premium online slots known for their stunning 3D graphics and innovative gameplay. Founded in 2006, the company pioneered the concept of cinematic 3D slots. Their Slots3 series raised the bar for graphics and animations. Licensed in multiple jurisdictions worldwide, Betsoft offers over 190 games to casinos and players. Signature titles include Max Quest, Sugar Pop 2, and their “Good Girl, Bad Girl” series. The release of Book of Helios adds another exciting slot to Betsoft’s diverse portfolio.

Book of Helios incorporates a conventional layout of 5 reels, 3 rows, and 10 fixed paylines. Wins are formed by landing 3 or more matching symbols left to right on adjacent reels starting from the leftmost reel. The minimum bet is $0.10 per spin while the maximum bet goes up to $10.

Book of Helios slot lobby

Despite a lower than average RTP of 95.58%, the hit frequency is a generous 35.03% indicating frequent but volatile wins. It’s this volatility that enables the huge top payout of 20,168x the stake which surpasses most similar slots. Autoplay functionality allows automated spins for up to 100 rounds. While the base game features are typical, the free spins round incorporates innovative expanding reels and multipliers.


Graphics and Visuals

Book of Helios has stylish graphics with high production value matched to its Greek mythology concept. Stone columns frame the reels while a temple interior creates an immersive background. Symbols pop with color and shine through smoothly animated spins and winning combinations.

The female lead as one of the main symbols along with the depiction of Helios capture the adventurous treasure hunting journey players are taken on. Crisp visuals are retained when playing in portrait mode on mobiles.

Symbols and Payouts

Lower paying symbols are the classic playing card suits from 10 to Ace. The most lucrative symbols are thematic icons related to Helios and ancient Greek mythology. These include a whip, crossbow, female adventurer, and Helios himself.

5 of the sun god Helios pays 20x the bet while 5 Royals pays up to 8x. The Book of Helios represents both the wild and scatter symbol. As wild it substitutes all regular symbols to help form wins. As scatter, 3 books anywhere on reels 2, 3, and 4 triggers the free spins round.

Free Spins Bonus Feature

Landing 3 Book of Helios scatters awards 10 free spins. A special expanding symbol is randomly selected that will fill its entire reel when hitting. These expanded symbols pay on any position, even non-adjacent.

When Book wilds appear, they expand vertically across their reel revealing a multiplier value from 1x to 5x. These wild multipliers are multiplied together across reels for huge payouts. Players can also buy the free spins feature for 65.5x their bet.

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Audio and Sound Effects

Along with strong visuals, Book of Helios incorporates atmospheric audio elements that complement its setting. Echoing sound effects match the inside of an ancient temple while spins are accompanied by uplifting background music.

Winning symbol combinations have satisfying chimes associated with Greek worship. The audio enhances the environmental immersion alongside the premium graphics.


Betting Options and Autoplay

Book of Helios accommodates a wide variety of players with its flexible betting selections. The minimum bet is only $0.10 while the maximum goes up to $10 per spin across 10 lines. This friendly betting range coupled with high individual payouts makes the huge 20,000x top win feasible for many players.

Autoplay allows setting anywhere from 10 to 100 automated consecutive spins. Players can preset stop conditions based on wins, balances, or go indefinitely. This lets gameplay continue uninterrupted while retaining control.

Mobile Optimization and Performance

Book of Helios is fully optimized for mobile and tablet gameplay. The graphics and animations retain their high quality when played in portrait orientation on smaller screens. Performance remains smooth and stable with no lag or stuttering observed during play testing.

Book of Helios is fully optimized for mobile and tablet gameplay

Navigation of menus and settings is intuitive through touch screen on both iOS and Android devices. Autoplay and turbo spin functionality make mobile gaming sessions highly convenient.

Final Verdict

Book of Helios brings the popular Book of slots theme to life through its cinematic visuals and sounds. While the volatility means bankroll swings, the huge jackpot potential in free spins is enticing. The special expanding reels and multiplier wilds add an extra layer of rewards.

Fans of Greek mythology and slots with high payout possibilities will find Book of Helios an appealing choice. Be sure to try the demo version to experience the big win possibilities first-hand before playing for real stakes.

What is the RTP of Book of Helios?

Book of Helios has an RTP (return to player) of 95.58%. This is slightly lower than average for slots but can vary by casino.

What special features does Book of Helios have?

The main features are expanding reels during free spins where a random symbol fills an entire reel when hit. Book wilds also expand and add multipliers up to 5x.

How do you trigger the free spins on Book of Helios?

Landing 3 Book of Helios scatter symbols anywhere on the middle 3 reels (2, 3 and 4) will activate 10 free spins.

Can you play Book of Helios on mobile?

Yes, Book of Helios is fully optimized for mobile play on both iOS and Android devices. The graphics and features translate seamlessly to smaller screens. is a website that provides up-to-date news and reviews on popular slots.

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