Formula Spin

Hell Spell

Slots Video Slots Magic Halloween Horror

Play Hell Spell slot by Formula Spin for free in demo mode! Explore RTP, bonus rounds, and key features before playing for real.

SlotRanker Score

/ 99

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

96.3%

return to player

Volatility

—

variance

Max win

15,000×

top multiplier

Min bet

$10.00

per spin

Reels

grid

Player rating

4.1 ★

18 votes

DEMO Play free, no signup

Formula Spin

Embed on your site

4.1 / 5

18 ratings

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

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

Payouts & RTP9/10

RTP 96.3% → 9.0/10

Volatility8/10imputed

imputed medium (unknown) → 8.0/10

Win Potential8.4/10

x15000.00 (15000×) → 8.4/10

Features8/10

9 features → 8.0/10

Game Mechanics7.4/10

f=9 r=6 → 7.3/10

Context signals (tie-breakers)

Layout5/10

6x5 → 5.0/10

Bet Flexibility4/10

10–250 (×25) → 4.0/10

Provider Reputation6.2/10

provider avg 6.2 → 6.2/10

Popularity5/10

synthetic proxy → 5.0/10

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: 73 — Hell Spell by Formula Spin

https://slotranker.com/formula-spin/hell-spell#score

How to cite

Spec sheet

Hell Spell at a glance.

Identity

Slot nameHell Spell

StudioFormula Spin

Released10/21/2026

Math

SlotRanker Score73

RTP96.3%

Max win15,000×

Bet range$10.00 – $250.00

Player rating4.1 / 5 · 18 votes

Format

Reels6

Paylines—

Layout6x5

Features

Themes

Expected average based on this slot's 96.3% RTP — individual sessions vary with volatility.

Bet per spin

Spins per hour400

Session length (hours)

Cost per hour$148.00

Cost per session$148.00

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

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

Bankroll ($)Bet per spin ($)Speed

Volatility tier: Mediumassumed — not published for this slot

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 (Medium). The model is calibrated so the average return equals this slot's published RTP (96.30%), with wins capped at its top multiplier (15,000×).

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 Hell Spell

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

Compare Hell Spell with other games

	Hell Spell Score 73This game	Horror Hotel Score 85	Voodoo People Score 82	Dark Vortex Score 78	3 Lucky Witches Score 78
Identity
Studio	Formula Spin	Relax Gaming	BGaming	Yggdrasil Gaming	4ThePlayer
Released	10/21/2026	1/25/2023	9/18/2024	10/24/2018	10/4/2023
Math
RTP	96.3%	96.17%	96.88%	96.5%	96%
Volatility	—	High volatility	Medium/High	High volatility	High volatility
Max win	15,000×	20,000×	7,500×	7,318×	5,000×
Format
Reels	6	6	5	5	5
Layout	6x5	6x6	5x3	5x3	5x3
Paylines	—	0	25	243	243
Min bet	10	0.1	0.1	0.1	0.2
Max bet	250	50	34	50	30
Features
Progressive	—	—	—	—	—
Wild symbol	—	✓	✓	✓	✓
Free spins	✓	✓	✓	✓	✓
Scatter symbol	✓	✓	✓	✓	✓
Multiplier	✓	✓	✓	—	✓
Bonus game	—	—	✓	✓	—
Respins	—	✓	✓	—	—

Every number is shown as a delta against Hell Spell.

Comparing against

Hell Spell

Formula Spin

RTP

96.3%

Max win

15,000×

Score

+ Wild+ Bonus Game+ Respins

+ Wild+ Bonus Game− Multiplier

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