Endorphina

Fisher King

Slots Video Slots Fantasy Crown Emperor Royal Love Treasure Medieval Hero Queen

Arthurian rescue slot linking Free Spins to Holy Grail collection

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

96.02%

return to player

Volatility

High volatility

variance

Max win

2,000×

top multiplier

Min bet

$0.10

per spin

Reels

20 lines

Player rating

4.0 ★

9 votes

DEMO Play free, no signup

Endorphina

Embed on your site

4.0 / 5

9 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 96.02% → 9.0/10

Volatility9/10

high → 9.0/10

Win Potential6.6/10

x2000.00 (2000×) → 6.6/10

Features8.5/10

14 features → 8.5/10

Game Mechanics4.6/10

f=14 r=5 p=20 → 4.6/10

Context signals (tie-breakers)

Layout6/10

5x3 → 6.0/10

Bet Flexibility8/10

0.1–200 (×2000) → 8.0/10

Provider Reputation6.6/10

provider avg 6.6 → 6.6/10

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 — Fisher King by Endorphina

https://slotranker.com/endorphina/fisher-king#score

How to cite

Slot Summary

Fisher King fills the narrow space between a conventional 20-payline slot and an Arthurian rescue quest. Endorphina turns the wounded king and Holy Grail legend into a persistent Symbol Collection objective during Free Spins: Grail symbols replenish broken hearts, and rewards depend on how many hearts are restored together. That mechanic gives the high-volatility game a stronger purpose than its royal Fantasy imagery alone.

How It Plays

Regular wins form across 20 paylines from the leftmost reel, with the Crown Wild substituting for ordinary symbols and Heart Scatters paying independently.

After an eligible win, the Gamble option offers a separate double-or-lose decision, while the main long-form objective remains reserved for Free Spins.

Theme & Atmosphere

The Medieval Fantasy story follows a wounded royal figure confined near his castle, waiting for the Holy Grail to restore him and return him to open water.

Crown, Hero, Queen and Treasure imagery supports that Royal setting, but the broken-heart motif gives the familiar myth a clear rescue narrative.

Fantasy Crown Emperor Royal Love Treasure Medieval Hero Queen

Features & Win Potential

Symbol Collection becomes meaningful when Holy Grails add lifeblood to individual hearts, requiring 2 drops before a heart counts as fully restored.

Wild Symbols appear stacked during Free Spins, while Additional Free Spins allow the heart-restoration objective to continue beyond the initially awarded round.

High volatility Free Spins Symbol Collection Scatter Symbol Wild Symbol Medium/High 5 Reels Gamble Symbols collection (Energy)Additional Free Spins 96% RTP Bonus symbols 20 Paylines Risk/Gamble (Double) game

Bonus & Free Spins

Three Heart Scatters start 10 Free Spins, while 4 award 15 and 5 award 20, so the trigger itself determines the opening round length.

During those spins, Holy Grails refill broken hearts beneath the reels. The reward rises with the number completed simultaneously, reaching 2,000x for all 5.

Spec sheet

Fisher King at a glance.

Identity

Slot nameFisher King

StudioEndorphina

Released6/15/2022

Math

SlotRanker Score73

RTP96.02%

VolatilityHigh volatility

Max win2,000×

Bet range$0.10 – $200.00

Player rating4.0 / 5 · 9 votes

Format

Reels5

Paylines20

Layout5x3

Expected average based on this slot's 96.02% RTP — individual sessions vary with volatility.

Bet per spin

Spins per hour400

Session length (hours)

Cost per hour$1.59

Cost per session$1.59

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 Fisher King? 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 (96.02%), with wins capped at its top multiplier (2,000×).

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 Fisher King

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Compare Fisher King with other games

	Fisher King Score 73This game	Frost Queen Jackpots Score 65	7 Shields of Fortune Score 65	King Craft Score 76	Midnight Gold Score 69
Identity
Studio	Endorphina	Yggdrasil Gaming	Atomic Slot Lab	Popok Gaming	Play'n Go
Released	6/15/2022	1/4/2021	10/18/2023	4/20/2024	12/23/2024
Math
RTP	96.02%	96%	95.66%	95.98%	94.2%
Volatility	High volatility	Low volatility	Medium volatility	High volatility	High volatility
Max win	2,000×	1,265×	4,432×	5,000×	20,000×
Format
Reels	5	5	5	5	5
Layout	5x3	5x3	5x5	5x3	5x3
Paylines	20	20	5	Pay Anywhere	10
Min bet	0.1	0.2	0.2	—	0.1
Max bet	200	40	100	—	5
Features
Progressive	—	✓	—	✓	—
Wild symbol	✓	✓	✓	—	✓
Free spins	✓	✓	✓	✓	✓
Scatter symbol	✓	✓	—	✓	✓
Multiplier	—	✓	—	✓	✓
Bonus game	—	✓	—	—	—
Respins	—	—	✓	—	✓

Every number is shown as a delta against Fisher King.

Comparing against

Fisher King

Endorphina

RTP

96.02%

Max win

2,000×

Score

+ Progressive+ Multiplier+ Bonus Game

+ Progressive+ Multiplier− Wild

+ Multiplier+ Respins

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