Iconic21

Old Harbor

Play Old Harbor slot by Iconic21 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

95.91%

return to player

Volatility

Medium volatility

variance

Max win

1,000×

top multiplier

Min bet

$0.10

per spin

Reels

20 lines

Player rating

3.6 ★

20 votes

DEMO Play free, no signup

Iconic21

Embed on your site

3.6 / 5

20 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 & RTP8/10

RTP 95.91% → 8.0/10

Volatility8/10

medium → 8.0/10

Win Potential6/10

x1000.00 (1000×) → 6.0/10

Features4.5/10

6 features → 4.5/10

Game Mechanics4.6/10

f=6 r=5 p=20 → 4.6/10

Context signals (tie-breakers)

Layout5/10

5x4 → 5.0/10

Bet Flexibility6/10

0.1–100 (×1000) → 6.0/10

Provider Reputation5/10

provider avg 5.0 → 5.0/10

Popularity0/10

synthetic proxy → 0.0/10

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: 53 — Old Harbor by Iconic21

https://slotranker.com/iconic21/old-harbor#score

How to cite

Spec sheet

Old Harbor at a glance.

Identity

Slot nameOld Harbor

StudioIconic21

Released10/29/2026

Math

SlotRanker Score53

RTP95.91%

VolatilityMedium volatility

Max win1,000×

Bet range$0.10 – $100.00

Player rating3.6 / 5 · 20 votes

Format

Reels5

Paylines20

Layout5x4

Features

Themes

Expected average based on this slot's 95.91% RTP — individual sessions vary with volatility.

Bet per spin

Spins per hour400

Session length (hours)

Cost per hour$1.64

Cost per session$1.64

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 Old Harbor? 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 (95.91%), with wins capped at its top multiplier (1,000×).

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 Old Harbor

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Compare Old Harbor with other games

	Old Harbor Score 53This game	Soaked by Seamen Score 79	Book of Blackeye’s Bounty Score 78	Skeleton Key Score 76	Sky Raiders Power Combo Score 74
Identity
Studio	Iconic21	NoLimit City	Indigo Magic	IGT	All For One Studios
Released	10/29/2026	6/16/2026	8/24/2023	12/17/2020	6/7/2024
Math
RTP	95.91%	96.04%	96.04%	96%	96%
Volatility	Medium volatility	Medium/High	High volatility	Medium volatility	High volatility
Max win	1,000×	30,000×	8,000×	83,333×	13,086×
Format
Reels	5	4	5	5	5
Layout	5x4	3-5-5-3	5x3	5x3	5x3
Paylines	20	225	10	243	7776
Min bet	0.1	0.2	0.1	0.1	0.2
Max bet	100	100	100	300	20
Features
Progressive	—	—	—	—	—
Wild symbol	✓	—	✓	✓	✓
Free spins	✓	—	✓	✓	✓
Scatter symbol	✓	—	✓	✓	✓
Multiplier	—	—	—	✓	—
Bonus game	—	—	—	—	—
Respins	—	—	—	—	—

Every number is shown as a delta against Old Harbor.

Comparing against

Old Harbor

Iconic21

RTP

95.91%

Max win

1,000×

Score

− Wild− Free Spins− Scatter

Book of Blackeye’s Bounty

Sky Raiders Power Combo

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