Pragmatic Play

River of Styx

Slots Video Slots Mythology Magic Horror Underworld Gems Darkness Crown Sea Ghost

Underworld Cluster Pays slot shaped by persistent feature chains

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

96.6%

return to player

Volatility

Medium volatility

variance

Max win

21,100×

top multiplier

Min bet

$0.20

per spin

Reels

grid

Player rating

4.0 ★

1 votes

DEMO Play free, no signup

Pragmatic Play

Embed on your site

4.0 / 5

1 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 96.6% → 9.0/10

Volatility8/10

medium → 8.0/10

Win Potential8.6/10

x21100.00 (21100×) → 8.6/10

Features9/10

10 features → 9.0/10

Game Mechanics6.8/10

f=10 r=5 p=n/a → 6.8/10

Context signals (tie-breakers)

Layout5/10

5x6 → 5.0/10

Bet Flexibility6/10

0.2–125 (×625) → 6.0/10

Provider Reputation7.2/10

provider avg 7.2 → 7.2/10

Popularity7.2/10

search demand p70 + proxy blend (70/30) → 7.2/10

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: 79 — River of Styx by Pragmatic Play

https://slotranker.com/pragmatic-play/river-of-styx#score

How to cite

Slot Summary

A 5x6 field of Cluster Pays gives River of Styx a broader canvas than a conventional line slot, but its identity comes from how Pragmatic Play connects Cascading wins, Scatter Symbols, and a Free Spins Multiplier. The 96.6% RTP and medium volatility sit beside an x21100.00 ceiling, making feature development more important than isolated symbol matches.

How It Plays

Winning groups pay through Cluster Pays rather than fixed lines. The Avalanche and Cascading process then clears those symbols, drops replacements into the field, and checks the new arrangement again.

The base loop is therefore less about reading a single horizontal pattern and more about following consecutive changes across the grid. Scatter Symbols provide the route from those regular sequences into the main feature round.

Theme & Atmosphere

The Underworld and Mythology themes draw specifically on the River Styx, with the Sea acting as the boundary between the living world and the land of the dead.

Darkness, Ghost, Magic, Crown, and Gems support that mythic crossing without changing the central subject. The result treats the voyage as ominous passage rather than nautical celebration.

Mythology Magic Horror Underworld Gems Darkness Crown Sea Ghost

Features & Win Potential

Cascading and Avalanche remove each completed Cluster Pays group before replacement symbols arrive. This allows one paid result to produce further checks without starting an unrelated spin.

The Bonus Bet changes access pressure around Scatter Symbols, while the Free Spins Multiplier shifts the feature toward accumulated value across consecutive Cascading results.

Free Spins Scatter Symbol Cascading Cluster Pays Medium volatility Bonus Buy Additional Free Spins Avalanche Bonus Bet Free Spins Multiplier

Bonus & Free Spins

Free Spins are reached through Scatter Symbols, and Additional Free Spins can extend the round. The Free Spins Multiplier makes the bonus distinct from ordinary Cascading sequences.

Bonus Buy offers another route into the feature, while Bonus Bet alters the paid setup around the same Scatter Symbol trigger rather than creating a separate game mode.

Screenshots

3 gameplay frames

Gameplay screenshot of River of Styx (1 of 3)

Gameplay screenshot of River of Styx (2 of 3)

Gameplay screenshot of River of Styx (3 of 3)

Spec sheet

River of Styx at a glance.

Identity

Slot nameRiver of Styx

StudioPragmatic Play

Released6/17/2024

Math

SlotRanker Score79

RTP96.6%

VolatilityMedium volatility

Max win21,100×

Bet range$0.20 – $125.00

Player rating4.0 / 5 · 1 votes

Format

Reels5

Paylines—

Layout5x6

Features

Themes

Expected average based on this slot's 96.6% RTP — individual sessions vary with volatility.

Bet per spin

Spins per hour400

Session length (hours)

Cost per hour$2.72

Cost per session$2.72

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 River of Styx? 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: Medium

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 (96.60%), with wins capped at its top multiplier (21,100×).

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 River of Styx

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Compare River of Styx with other games

	River of Styx Score 79This game	Wins of Mermaid Multipower Score 80	Moon Rising Score 79	Luck of the Lamp Cashlink Score 69	Mythic Maiden Score 67
Identity
Studio	Pragmatic Play	Fantasma Games	Reloaded Gaming	iSoftbet	NetEnt
Released	6/17/2024	2/13/2024	10/28/2022	9/5/2024	11/26/2011
Math
RTP	96.6%	96%	96.61%	96%	96.58%
Volatility	Medium volatility	High volatility	High volatility	Medium volatility	Low volatility
Max win	21,100×	10,000×	4,000×	250×	—
Format
Reels	5	6	6	5	5
Layout	5x6	6x5	6x5	5x3	5x3
Paylines	—	6	Pay Anywhere	20	30
Min bet	0.2	0.2	0.1	0.2	0.3
Max bet	125	80	100	50	15
Features
Progressive	—	—	—	—	—
Wild symbol	—	✓	✓	✓	✓
Free spins	✓	✓	✓	✓	✓
Scatter symbol	✓	✓	—	✓	—
Multiplier	—	✓	✓	✓	✓
Bonus game	—	—	✓	—	—
Respins	—	✓	—	—	—

Every number is shown as a delta against River of Styx.

Comparing against

River of Styx

Pragmatic Play

RTP

96.6%

Max win

21,100×

Score

Wins of Mermaid Multipower

+ Wild+ Multiplier+ Respins

+ Wild+ Multiplier+ Bonus Game− Scatter

Luck of the Lamp Cashlink

+ Wild+ Multiplier− Scatter

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