Belatra Games

Crystals Digger

Slots Video Slots Action & Adventure Gems Digger Bomb

Mining slot combining cascading wins with configurable bonus access

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

90.39%

return to player

Volatility

High volatility

variance

Max win

2,000×

top multiplier

Min bet

$0.20

per spin

Reels

5 lines

Player rating

3.9 ★

19 votes

DEMO Play free, no signup

Belatra Games

Embed on your site

3.9 / 5

19 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 & RTP1/10

RTP 90.39% → 1.0/10

Volatility9/10

high → 9.0/10

Win Potential6.6/10

x2000.00 (2000×) → 6.6/10

Features10/10

18 features → 10.0/10

Game Mechanics5.5/10

f=18 r=5 p=5 → 5.5/10

Context signals (tie-breakers)

Layout5/10

5x5 → 5.0/10

Bet Flexibility6/10

0.2–100 (×500) → 6.0/10

Provider Reputation6.4/10

provider avg 6.4 → 6.4/10

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: 55 — Crystals Digger by Belatra Games

https://slotranker.com/belatra-games/crystals-digger#score

How to cite

Slot Summary

Cascading symbols keep the mining field active after a win, which is the clearest way into Crystals Digger. Belatra Games pairs that repeat-drop loop with high volatility, a 90.39% RTP, and an x2000.00 ceiling, then shifts its larger feature weight to free spins, random multipliers, Bonus Buy, and a bonus wheel. Its identity comes from how wins clear and refill rather than from conventional paylines.

How It Plays

Crystals Digger uses Pay Anywhere evaluation rather than conventional fixed lines. Matching symbols create a win, disappear, and allow another arrangement to fall into the cleared positions.

Avalanche and Cascading behavior can produce several evaluations from one paid spin. Colossal Reels give some symbols a larger physical presence within that repeated clearing sequence.

Theme & Atmosphere

The Action and Adventure setting follows a Digger descending through a mine in search of Gems, giving the repeated symbol drops a clear excavation metaphor.

Bomb imagery supports the clearing action, while crystals provide the main visual reward. The theme therefore explains the cascade behavior instead of merely decorating it.

Action & Adventure Gems Digger Bomb

Features & Win Potential

High volatility, a 90.39% RTP, and an x2000.00 maximum win define the mathematical range, while random multipliers can alter the value of qualifying outcomes.

The Bonus wheel and Progressive Jackpot provide a separate prize route from cascading wins, using Spin The Wheel rather than another symbol-clearing sequence.

High volatility Free Spins 6 Reels Multiplier Scatter Symbol Cascading Medium/High Bonus Buy Additional Free Spins Bonus wheel Progressive Jackpot Spin The Wheel Avalanche Pay Anywhere Colossal Reels Grid Free Spins Multiplier Random multiplier

Bonus & Free Spins

Four or more Scatters award 10 free spins. Three or more additional Scatters during the round add five spins, with a maximum of 300 bonus spins.

Bonus Buy appears as the Craft Bonus, allowing direct purchase of different bonus configurations. The price and selected setup remain connected to the base-game stake.

Spec sheet

Crystals Digger at a glance.

Identity

Slot nameCrystals Digger

StudioBelatra Games

Released8/12/2021

Math

SlotRanker Score55

RTP90.39%

VolatilityHigh volatility

Max win2,000×

Bet range$0.20 – $100.00

Player rating3.9 / 5 · 19 votes

Format

Reels5

Paylines5

Layout5x5

Expected average based on this slot's 90.39% RTP — individual sessions vary with volatility.

Bet per spin

Spins per hour400

Session length (hours)

Cost per hour$7.69

Cost per session$7.69

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 Crystals Digger? 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 (90.39%), 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 Crystals Digger

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Compare Crystals Digger with other games

	Crystals Digger Score 55This game	Dyn'A'Miners Score 77	Hugo Carts Score 72	More Gold Diggin Score 65	Mine Mine Quest Score 65
Identity
Studio	Belatra Games	IGT	Play'n Go	Betsoft	Tom Horn Gaming
Released	8/12/2021	3/6/2023	8/26/2021	3/15/2014	11/2/2021
Math
RTP	90.39%	96.53%	94.24%	94.53%	95.41%
Volatility	High volatility	High volatility	High volatility	High volatility	Medium volatility
Max win	2,000×	10,000×	25,000×	—	223×
Format
Reels	5	5	5	5	9
Layout	5x5	5x3	5x3	5x3	9x8
Paylines	5	15	1024	25	Cluster pays (5 or more identical symbols)
Min bet	0.2	0.15	0.1	0.02	0.5
Max bet	100	150	100	125	100
Features
Progressive	✓	—	—	—	—
Wild symbol	—	✓	✓	✓	✓
Free spins	✓	✓	✓	✓	✓
Scatter symbol	✓	✓	✓	✓	—
Multiplier	✓	✓	✓	✓	—
Bonus game	—	—	—	✓	—
Respins	—	✓	✓	—	—

Every number is shown as a delta against Crystals Digger.

Comparing against

Crystals Digger

Belatra Games

RTP

90.39%

Max win

2,000×

Score

+ Wild+ Respins− Progressive

+ Wild+ Respins− Progressive

+ Wild+ Bonus Game− Progressive

+ Wild− Progressive− Scatter− Multiplier

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