Rival Gaming

Howl-O-Ween

Slots Video Slots Halloween Horror Animals Witches Ghost Bat

A darker Rival release rooted in Victorian werewolf folklore

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

96.25%

return to player

Volatility

High volatility

variance

Max win

20,000×

top multiplier

Min bet

$0.30

per spin

Reels

243 lines

Player rating

4.9 ★

7 votes

DEMO Play free, no signup

Rival Gaming

Embed on your site

4.9 / 5

7 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 96.25% → 9.0/10

Volatility9/10

high → 9.0/10

Win Potential8.6/10

x20000.00 (20000×) → 8.6/10

Features10/10

12 features → 10.0/10

Game Mechanics8.5/10

f=12 r=5 p=243 → 8.5/10

Context signals (tie-breakers)

Layout5/10

3x5 → 5.0/10

Bet Flexibility4/10

0.3–30 (×100) → 4.0/10

Provider Reputation6.4/10

provider avg 6.4 → 6.4/10

Popularity7.5/10

synthetic proxy → 7.5/10

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: 83 — Howl-O-Ween by Rival Gaming

https://slotranker.com/rival-gaming/howl-o-ween#score

How to cite

Slot Summary

Howl-O-Ween takes Rival Gaming toward a darker Halloween release, using classic werewolf folklore and a foggy Victorian setting instead of the studio's more lighthearted direction. Gothic atmosphere is the main identity, with the game aimed at fans of high-risk, feature-heavy play. Hold & Win, expanding wilds with respins, fixed jackpots, and random multipliers reinforce that more intense position.

Spec sheet

Howl-O-Ween at a glance.

Identity

Slot nameHowl-O-Ween

StudioRival Gaming

Released9/23/2025

Math

SlotRanker Score83

RTP96.25%

VolatilityHigh volatility

Max win20,000×

Bet range$0.30 – $30.00

Player rating4.9 / 5 · 7 votes

Format

Reels5

Paylines243

Layout3x5

Features

Themes

Expected average based on this slot's 96.25% RTP — individual sessions vary with volatility.

Bet per spin

Spins per hour400

Session length (hours)

Cost per hour$4.50

Cost per session$4.50

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 Howl-O-Ween? 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: 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 (96.25%), with wins capped at its top multiplier (20,000×).

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 Howl-O-Ween

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Compare Howl-O-Ween with other games

	Howl-O-Ween Score 83This game	Haunted House Score 82	Bubble Bubble 2 Score 64	Ghosts' Night HD Score 58	Trick or Treat Score 43
Identity
Studio	Rival Gaming	Habanero	Realtime Gaming	Play Labs	EURASIAN Gaming
Released	9/23/2025	3/15/2014	6/15/2017	1/15/2014	10/15/2024
Math
RTP	96.25%	96.14%	95%	94.11%	—
Volatility	High volatility	Medium/High	High volatility	Medium volatility	—
Max win	20,000×	—	—	—	—
Format
Reels	5	5	5	5	5
Layout	3x5	5x3	5x3	5x3	5x3
Paylines	243	25	50	25	10
Min bet	0.3	0.01	0.5	0.01	0.1
Max bet	30	5000	250	25	100
Features
Progressive	—	✓	—	—	—
Wild symbol	✓	✓	✓	✓	✓
Free spins	—	✓	✓	✓	✓
Scatter symbol	—	✓	✓	✓	✓
Multiplier	✓	✓	—	—	—
Bonus game	✓	—	—	✓	—
Respins	✓	—	—	—	—

Every number is shown as a delta against Howl-O-Ween.

Comparing against

Howl-O-Ween

Rival Gaming

RTP

96.25%

Max win

20,000×

Score

+ Progressive+ Free Spins+ Scatter− Bonus Game− Respins

+ Free Spins+ Scatter− Multiplier− Bonus Game− Respins

+ Free Spins+ Scatter− Multiplier− Respins

+ Free Spins+ Scatter− Multiplier− Bonus Game− Respins

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