Feature | Details |
Developer | Betsoft |
Reels / Rows | 5 reels, 3 rows |
Paylines | 10 fixed paylines |
RTP | ~95.58% |
Volatility | High |
Wild Symbol | Book (also acts as scatter) |
Free Spins | Yes – with expanding symbols |
Max Win | Up to x20,168 your stake |
Play Demo | Available at most online casinos |
Book of Helios takes place in a temple of fire and gold, where Helios — the sun god himself — watches over the reels with glowing intensity. The artwork is vivid and saturated in deep reds, golds, and oranges, giving everything a scorched and divine tone.
Symbols include magical books, ancient scrolls, chariots, blazing horses, and Helios himself — all beautifully illustrated with high-definition graphics. The game’s soundtrack adds epic flair, mixing orchestral themes with ancient Greek-inspired rhythms that intensify during bonus rounds.
At its core, Book of Helios is a 5x3 slot game with 10 paylines and familiar “Book of…” mechanics, but with a few mythological upgrades.
The Book of Helios symbol acts as both wild and scatter, substituting for other symbols and triggering the free spins feature when three or more land on the reels. Once free spins begin, one random symbol is chosen to expand, potentially covering entire reels and resulting in a big win.
What sets this slot apart is the fixed expanding wild feature. During free spins, when the book wild lands on reel 2, 3, or 4, it triggers a re-spin — giving players an extra shot at big payouts within the bonus mode.
Wild/Scatter Book Symbol: Triggers free spins and substitutes all others
Expanding Symbols: One high-value symbol expands during free spins
Respin Mechanic: Books that land during free spins trigger re-spins
High Volatility Gameplay: Bigger risks, bigger potential rewards
Impressive Max Win: Over x20,000 your stake possible on a single spin
Play Demo Available: Explore the game without wagering real money
Start in Play Demo Mode Get a feel for the high-volatility rhythm before committing your bankroll.
Chase the Free Spins The key to huge wins lies in triggering and maximizing the expanding symbols during the bonus round.
Watch the Wilds on Reels 2–4 Book wilds during free spins are your gateway to lucrative re-spins — keep an eye on them.
Stay Patient High volatility means longer dry spells, but massive wins are possible with the right timing.
Use Bonuses Where Offered Look for free spins or deposit match bonuses from casinos that feature Book of Helios.
Book of Helios is a visually stunning, power-packed slot game that takes the classic “Book of” formula and turns up the heat. With expanding symbols, a unique re-spin feature, and one of the highest potential max wins in Betsoft’s library, it’s an epic slot worthy of its divine theme.
If you're ready to channel the power of the sun and spin for celestial riches, this one’s for you.
Step into the temple. Spin the Book. Try the play demo — and let Helios decide your fate.
