JDB

Lucky Miner

Slots Video Slots Animals Music Digger Cartoon Medieval Underground

JDB mining slot with an escalating Free Spins multiplier

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

96.27%

return to player

Volatility

Medium volatility

variance

Max win

—

top multiplier

Min bet

—

per spin

Reels

20 lines

Player rating

4.6 ★

8 votes

DEMO Play free, no signup

JDB

Embed on your site

4.6 / 5

8 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 96.27% → 9.0/10

Volatility8/10

medium → 8.0/10

Win Potential—

no data

Features6.5/10

10 features → 6.5/10

Game Mechanics4.6/10

f=10 r=5 p=20 → 4.6/10

Context signals (tie-breakers)

Layout6/10

5x3 → 6.0/10

Bet Flexibility—

—

Provider Reputation5.1/10

provider avg 5.1 → 5.1/10

Popularity3.3/10

synthetic proxy → 3.3/10

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: 65 — Lucky Miner by JDB

https://slotranker.com/jdb/lucky-miner#score

How to cite

Slot Summary

Anyone who prefers medium volatility and a Free Spins round whose multiplier can climb from 3x to 8x has a clear reason to examine Lucky Miner. JDB uses a conventional 5x3, 20-payline base game as the runway, then shifts attention to the Lucky Miner scatters and gopher-driven multiplier increases. The result is a compact mining slot whose identity comes less from its line setup than from how the bonus can raise the value of each remaining spin.

How It Plays

The base game uses five reels, three rows, and 20 paylines, so each spin resolves through fixed line combinations rather than ways or clusters.

Three or more Lucky Miner scatters move play into Free Spins, shifting the main point of attention from ordinary line hits to the bonus multiplier's behavior.

Theme & Atmosphere

The Underground setting makes the Digger theme functional rather than decorative, since the bonus is triggered by Lucky Miner symbols and altered by a gopher.

Cartoon and Animals cues keep the mining premise light, while the gopher's role gives the scene a direct connection to the multiplier rule.

Animals Music Digger Cartoon Medieval Underground

Features & Win Potential

Wild Symbol substitution supports ordinary payline combinations, while the Scatter Symbol has the more consequential role of opening the Free Spins feature.

The medium-volatility profile sits beside a Free Spins Multiplier that can increase during the round, giving the bonus a different payoff pattern from the base game.

Free Spins Scatter Symbol Wild Symbol Medium volatility 5 Reels RTP range 96% RTP 20 Paylines Free Spins Multiplier Substitution Symbols

Bonus & Free Spins

Free Spins begin with a 3x multiplier after 3, 4, or 5 Lucky Miner symbols land, and gopher appearances can lift that multiplier as high as 8x.

Spec sheet

Lucky Miner at a glance.

Identity

Slot nameLucky Miner

StudioJDB

Released5/5/2018

Math

SlotRanker Score65

RTP96.27%

VolatilityMedium volatility

Max win—

Bet range—

Player rating4.6 / 5 · 8 votes

Format

Reels5

Paylines20

Layout5x3

Features

Themes

Expected average based on this slot's 96.27% RTP — individual sessions vary with volatility.

Bet per spin

Spins per hour400

Session length (hours)

Cost per hour$2.98

Cost per session$2.98

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 Lucky Miner? 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 (96.27%), 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 Lucky Miner

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Compare Lucky Miner with other games

	Lucky Miner Score 65This game	Rolling in Gold Score 79	Badger Miners Score 75	Mole Money Score 35	RoxDogs Score 90
Identity
Studio	JDB	Blueprint Gaming	Yggdrasil Gaming	KA Gaming	Popiplay
Released	5/5/2018	3/4/2021	6/30/2023	11/29/2023	12/3/2024
Math
RTP	96.27%	96.46%	96%	90%	97.03%
Volatility	Medium volatility	High volatility	High volatility	—	High volatility
Max win	—	50,000×	10,000×	—	30,000×
Format
Reels	5	5	5	5	6
Layout	5x3	5x3	5x3	5x3	6x4
Paylines	20	2304	243	25	4096
Min bet	—	0.1	0.1	0.25	0.2
Max bet	—	10	50	125	7.5
Features
Progressive	—	—	—	—	—
Wild symbol	✓	✓	✓	✓	✓
Free spins	✓	—	✓	✓	✓
Scatter symbol	✓	✓	✓	—	✓
Multiplier	—	✓	✓	—	✓
Bonus game	—	✓	—	—	✓
Respins	—	✓	✓	—	✓

Every number is shown as a delta against Lucky Miner.

Comparing against

Lucky Miner

JDB

RTP

96.27%

Max win

—

Score

+ Multiplier+ Bonus Game+ Respins− Free Spins

+ Multiplier+ Respins

+ Multiplier+ Bonus Game+ Respins

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