Betsoft

Book of Helios

SlotsVideo SlotsAction & AdventureMythologyBookWarriorGreeceAncient

Greek Mythology book slot centered on Olivia Brave's temple raid

SlotRanker Score
67
/ 99
67
05099

The SlotRanker Score is calculated from the visible data below. It is not affected by affiliate deals, and it cannot be bought.

How this score is built
RTP
95.58%
return to player
Volatility
High volatility
variance
Max win
20,168×
top multiplier
Min bet
$0.10
per spin
Reels
5
10 lines
Player rating
3.9 ★
12 votes
DEMO Play free, no signup
Betsoft
Book of Helios
Embed on your site
3.9 / 5
12 ratings
Sign in to rate this slot and earn points.

User ratings are shown separately from the Slot Score unless stated otherwise.

Why this score

High confidence (100%)

Five weighted signals shape the composite. Four context signals refine ties. See how we rate for the full methodology.

Slot score profile across 5 weighted categoriesPayouts & RTP8/10RTP 95.58% → 8.0/10Volatility9/10high → 9.0/10Win Potential8.6/10x20168.00 (20168×)…Features8/1011 features → 8.0/10Game Mechanics5.1/10f=11 r=5 p=10 →…
Payouts & RTP8/10
RTP 95.58% → 8.0/10
Volatility9/10
high → 9.0/10
Win Potential8.6/10
x20168.00 (20168×) → 8.6/10
Features8/10
11 features → 8.0/10
Game Mechanics5.1/10
f=11 r=5 p=10 → 5.1/10
Context signals (tie-breakers)
Layout6/10
5x3 → 6.0/10
Bet Flexibility4/10
0.1–10 (×100) → 4.0/10
Provider Reputation6.9/10
provider avg 6.9 → 6.9/10
Popularity2.5/10
search demand p14 + proxy blend (70/30) → 2.5/10

Popularity blends real player search demand (~30 markets) with a catalogue-derived proxy; games without measurable search demand use the proxy alone. Not live play telemetry.

Cite this score

SlotRanker Score: 67 — Book of Helios by Betsoft

https://slotranker.com/betsoft/book-of-helios#score
How to cite

Slot Summary

Free Spins reshape Book of Helios once a randomly chosen symbol begins expanding across entire reels. Betsoft places that familiar book-slot rhythm inside a Greek Mythology story about warrior Olivia Brave entering Helios's temple, then raises the feature's importance with multipliers and a direct purchase option. Its identity comes from joining an accessible 10-payline format to a much larger x20168.00 win ceiling.
MechanicsExpanding symbols and multipliers shape Free Spins

How It Plays

The base game uses 5 Reels and 10 Paylines, keeping each spin easy to read while the Scatter Symbol supplies the route into the principal feature.

Once Free Spins begin, the selected Expanding Symbol can cover a complete reel. That change makes reel coverage more important than ordinary line matching alone.

Theme & Atmosphere

The Ancient Greece setting follows Olivia Brave into the temple of Helios, giving the Action & Adventure material a named protagonist and a clear objective.

Helios and his fiery chariot connect the Book format to Mythology, while the Warrior theme frames the game as a confrontation rather than a passive treasure hunt.

Action & AdventureMythologyBookWarriorGreeceAncient

Features & Win Potential

Free Spins introduce a randomly selected Expanding Symbol that can cover full reels, concentrating the feature on repeated appearances of one designated symbol.

Multiplier behavior accompanies the expanding action, while the Wild Symbol and Scatter Symbol retain separate roles in forming wins and opening the feature.

High volatilityFree SpinsMultiplierScatter SymbolWild Symbol5 ReelsBook Of...Expanding SymbolsRTP range10 PaylinesFree Spins Multiplier

Bonus & Free Spins

Landing 3 scattered Book of Helios symbols awards 10 Free Spins. A Buy Feature also offers immediate entry instead of waiting for the natural trigger.

Spec sheet
Book of Helios at a glance.
Identity
Slot nameBook of Helios
StudioBetsoft
Released6/16/2022
Math
SlotRanker Score67
RTP95.58%
VolatilityHigh volatility
Max win20,168×
Bet range$0.10 – $10.00
Player rating3.9 / 5 · 12 votes
Format
Reels5
Paylines10
Layout5x3

This game is searched most in Argentina, Austria, and Australia.

True Cost to Play

Expected average based on this slot's 95.58% RTP — individual sessions vary with volatility.

Cost per hour$1.77
Cost per session$1.77

Estimate only, for entertainment purposes — treat gambling as entertainment, not a way to make money, and set a budget you can afford to lose.

Bankroll survival simulator

How long could a bankroll last on Book of Helios? We simulate thousands of sessions from this game's published RTP and volatility — the long-run math, not a prediction of your next spin.

Volatility tier: High

Running simulation…
How this works

Each simulated spin either misses or returns a win drawn from a log-normal distribution, with the hit rate and spread set by the slot's volatility tier (High). The model is calibrated so the average return equals this slot's published RTP (95.58%), with wins capped at its top multiplier (20,168×).

This is a simplified, parametric model of the game's math — not its real paytable. It exists to make the house edge visible over many sessions, so the numbers above are averages across thousands of runs, never a forecast of one.

This is math, not a prediction. Real sessions vary wildly, and no strategy changes a game's built-in house edge. Play for fun, set limits, and never bet more than you can afford to lose.

Where to play Book of Helios

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Casino availability depends on where you play from. We only show casinos that accept players from your country.

Compare Book of Helios with other games

Book of Helios
Book of Helios
Score 67This game
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Score 56
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Identity
Studio
Betsoft
Spinomenal
Fantasma Games
Relax Gaming
Qora Games
Released6/16/20226/17/202412/8/20205/4/20212/3/2025
Math
RTP95.58%—96.15%99%96.1%
VolatilityHigh volatility—High volatilityHigh volatilityHigh volatility
Max win20,168×5,000×25,000×12,075×1,000×
Format
Reels55655
Layout5x35x36x75x35x3
Paylines101071020
Min bet0.10.10.20.10.2
Max bet1010040100200
Features
Progressive—————
Wild symbol✓✓✓✓—
Free spins✓✓✓✓✓
Scatter symbol✓✓—✓✓
Multiplier✓—✓—✓
Bonus game—————
Respins—————

Every number is shown as a delta against Book of Helios.

Book of Helios
Comparing against
Book of Helios
Betsoft
RTP
95.58%
Max win
20,168×
Score
67
Book of Trojan Tales
Book of Trojan Tales
Spinomenal
RTP
—
Volatility
—
Max win
5,000×▼−15,168
Score
56▼−11
− Multiplier
Maze Escape Megaways
Maze Escape Megaways
Fantasma Games
RTP
96.15%▲+0.6
Volatility
High volatility
Max win
25,000×▲+4,832
Score
83▲+16
− Scatter
Book of 99
Book of 99
Relax Gaming
RTP
99%▲+3.4
Volatility
High volatility
Max win
12,075×▼−8,093
Score
80▲+13
− Multiplier
Riches of Medusa
Riches of Medusa
Qora Games
RTP
96.1%▲+0.5
Volatility
High volatility
Max win
1,000×▼−19,168
Score
77▲+10
− Wild

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Questions & Answers

Book of Helios FAQ

3 questions

Three Scatter Symbols trigger 10 Free Spins, where one symbol is randomly selected to expand across complete reels.

Book of Helios has 95.58% RTP and High volatility, with a listed maximum win of x20168.00.

Yes. Betsoft provides a Buy Feature that gives direct access to the Free Spins round.

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