Slot Factory

Koi Koi

Slots Video Slots Mythology Nature Fruit Fish Sea Asia Dragon

Koi-themed Asian slot with multiplier-driven Free Spins

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

96.5%

return to player

Volatility

Medium/High

variance

Max win

3,750×

top multiplier

Min bet

$0.20

per spin

Reels

20 lines

Player rating

4.1 ★

16 votes

DEMO Play free, no signup

Slot Factory

Embed on your site

4.1 / 5

16 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 96.5% → 9.0/10

Volatility9/10

high → 9.0/10

Win Potential7.1/10

x3750.00 (3750×) → 7.1/10

Features8/10

11 features → 8.0/10

Game Mechanics5.4/10

f=11 r=5 p=20 → 5.4/10

Context signals (tie-breakers)

Layout6/10

5x3 → 6.0/10

Bet Flexibility6/10

0.2–50 (×250) → 6.0/10

Provider Reputation5.3/10

provider avg 5.3 → 5.3/10

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: 72 — Koi Koi by Slot Factory

https://slotranker.com/slot-factory/koi-koi#score

How to cite

Slot Summary

Medium/High volatility sets the terms for Koi Koi before its calm Nature and Sea presentation does. Slot Factory places 20 fixed paylines on a 5x3 layout, then reserves much of the variance for Free Spins, Additional Free Spins, and Random multipliers. Wild substitution supports the base game, while the x3750.00 ceiling gives the bonus round a clear purpose beyond merely extending play.

How It Plays

Base spins evaluate matching symbols across 20 fixed paylines. The Wild Symbol substitutes within those combinations, keeping the regular loop familiar before the Scatter appears.

Scatter symbols provide the transition into Free Spins, where the pace changes through extra rounds and multiplier events rather than a different grid or payment system.

Theme & Atmosphere

Koi fish connect the Asia, Fish, and Nature themes, giving the game a quieter subject than its Medium/High volatility might imply.

Dragon and Mythology details add a ceremonial quality, while Sea and Fruit imagery keep the reel set varied without obscuring the central koi subject.

Mythology Nature Fruit Fish Sea Asia Dragon

Features & Win Potential

The Wild Symbol improves standard line formation, while the Scatter Symbol has the more consequential role of opening the Free Spins feature.

Multipliers become more important during Free Spins, and Random multiplier changes introduce irregular value shifts. Additional Free Spins can extend the time those changes remain available.

Free Spins Multiplier Scatter Symbol Wild Symbol Medium/High 5 Reels Additional Free Spins RTP range 96% RTP 20 Paylines Random multiplier

Bonus & Free Spins

Scatter symbols activate Free Spins, where Multipliers and Random multiplier events can increase qualifying awards. Additional Free Spins may extend the feature beyond its initial allocation.

Spec sheet

Koi Koi at a glance.

Identity

Slot nameKoi Koi

StudioSlot Factory

Released9/26/2023

Math

SlotRanker Score72

RTP96.5%

VolatilityMedium/High

Max win3,750×

Bet range$0.20 – $50.00

Player rating4.1 / 5 · 16 votes

Format

Reels5

Paylines20

Layout5x3

Features

Themes

Expected average based on this slot's 96.5% RTP — individual sessions vary with volatility.

Bet per spin

Spins per hour400

Session length (hours)

Cost per hour$2.80

Cost per session$2.80

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 Koi Koi? 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-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 (Medium-High). The model is calibrated so the average return equals this slot's published RTP (96.50%), with wins capped at its top multiplier (3,750×).

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 Koi Koi

No matching casinos for your region yet

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

Compare Koi Koi with other games

	Koi Koi Score 72This game	Koi Gate Score 75	Jewel of the Dragon Peach Festival Score 74	Koi Kingdom Score 74	9 Lions Score 71
Identity
Studio	Slot Factory	Habanero	Light & Wonder	BF games	Wazdan
Released	9/26/2023	2/12/2017	8/19/2024	4/6/2018	8/5/2018
Math
RTP	96.5%	96.26%	96%	98.08%	96.59%
Volatility	Medium/High	Low volatility	—	Medium volatility	Medium volatility
Max win	3,750×	—	15,000×	—	1,000×
Format
Reels	5	5	5	5	3
Layout	5x3	5x3	5x3	5x3	3x3
Paylines	20	18	50	20	0
Min bet	0.2	0.18	0.2	0.2	0.1
Max bet	50	90	60	200	100
Features
Progressive	—	✓	—	—	—
Wild symbol	✓	✓	✓	✓	✓
Free spins	✓	✓	✓	✓	✓
Scatter symbol	✓	✓	✓	✓	✓
Multiplier	✓	✓	✓	—	—
Bonus game	—	—	✓	✓	✓
Respins	—	—	—	—	✓

Every number is shown as a delta against Koi Koi.

Comparing against

Koi Koi

Slot Factory

RTP

96.5%

Max win

3,750×

Score

Jewel of the Dragon Peach Festival

+ Bonus Game− Multiplier

+ Bonus Game+ Respins− Multiplier

Explore More Games with Similar RTP

	Provider	RTP	Volatility	Max win	Score
Dragon Fall	Blueprint Gaming	96.46%	Medium volatility	50,000×	88
Cash Lab Megaways	iSoftbet	96.47%	High volatility	20,000×	87
Midgard’s Fortune Megaways	GameArt	96.48%	—	15,000×	83
Heroes Hunt 2 Megaways	Fantasma Games	96.49%	High volatility	20,000×	85
Koi Koi	Slot Factory	96.5%	Medium/High	3,750×	72
3 Secret Cities	4ThePlayer	96.5%	High volatility	50,000×	88
Bonanza Falls	Big Time Gaming	96.51%	High volatility	93,540×	85
Juicy Storm	Pascal Gaming	96.52%	High volatility	21,100×	85
Serpentina	Massive Studios	96.53%	High volatility	30,000×	91
Punk Rocker	NoLimit City	96.54%	High volatility	15,072×	85
Fruit Lock 7	Fazi Interactive	96.54%	High volatility	3,000×	64