Eyecon

Crystal Furnace

RARE Slots Video Slots Fruit Gems Fire Viking

Eyecon forge-themed slot with held expanding Wild respins

Only 0.2% of slots feature Starburst Mechanic.

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

96.56%

return to player

Volatility

Medium volatility

variance

Max win

—

top multiplier

Min bet

$0.10

per spin

Reels

10 lines

Player rating

3.7 ★

5 votes

DEMO Play free, no signup

Eyecon

Embed on your site

3.7 / 5

5 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 96.56% → 9.0/10

Volatility8/10

medium → 8.0/10

Win Potential—

no data

Features7.5/10

13 features → 7.5/10

Game Mechanics4.2/10

f=13 r=5 p=10 → 4.2/10

Context signals (tie-breakers)

Layout6/10

5x3 → 6.0/10

Bet Flexibility6/10

0.1–13 (×130) → 6.0/10

Provider Reputation6/10

provider avg 6.0 → 6.0/10

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: 67 — Crystal Furnace by Eyecon

https://slotranker.com/eyecon/crystal-furnace#score

How to cite

Slot Summary

Covering a full reel is the Hammer Wild's job in Crystal Furnace, and Eyecon gives that expansion a held respin rather than a separate free-spins round. The ten-line game also pays in both directions, so its Medium volatility is expressed through repeated middle-reel interventions instead of a large bonus menu. Its listed RTP is 96.56%.

How It Plays

Ten paylines cross a five-reel, three-row screen, and matching combinations can be read from either direction rather than exclusively from the left.

The selectable stake runs from 0.1 to 13, keeping the base controls compact while the expanding Hammer creates the main interruption to regular spins.

Theme & Atmosphere

Fire and Gems meet inside a forge setting, where molten metal, hammers, and crystal-like symbols turn the reel action into a compact smithing scene.

The Fire treatment explains the expansion effect visually: a Hammer lands, molten material crosses the reel, and the affected column changes before the respin.

Fruit Gems Fire Viking

Features & Win Potential

A Hammer on an eligible middle reel expands into a full-reel Wild, stays in place, and causes the remaining reels to spin again.

Pay Both Ways evaluates line wins from left to right and right to left, while the held Wild can extend the respin sequence up to three times.

Multiplier Wild Symbol Medium volatility 5 Reels Pay Both Ways Low volatility 3 Reels RTP range 10 Paylines 96% RTP Respin Wild Expanding wild with re-spin Starburst mechanic

Spec sheet

Crystal Furnace at a glance.

Identity

Slot nameCrystal Furnace

StudioEyecon

Released6/2/2022

Math

SlotRanker Score67

RTP96.56%

VolatilityMedium volatility

Max win—

Bet range$0.10 – $13.00

Player rating3.7 / 5 · 5 votes

Format

Reels5

Paylines10

Layout5x3

Features

Themes

Expected average based on this slot's 96.56% RTP — individual sessions vary with volatility.

Bet per spin

Spins per hour400

Session length (hours)

Cost per hour$1.38

Cost per session$1.38

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 Crystal Furnace? 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 (96.56%), 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 Crystal Furnace

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 Crystal Furnace with other games

	Crystal Furnace Score 67This game	Fire Forge Score 84	Extra Chilli Score 84	Devil's Deal Score 83	Sticky Diamonds Flaming Link Score 82
Identity
Studio	Eyecon	Stormcraft Studios	Big Time Gaming	Hot Rise Games	Gamomat
Released	6/2/2022	3/10/2021	4/4/2018	10/4/2023	—
Math
RTP	96.56%	96.73%	96.82%	96.05%	96.12%
Volatility	Medium volatility	High volatility	High volatility	Medium volatility	High volatility
Max win	—	50,000×	20,000×	20,000×	12,200×
Format
Reels	5	5	6	5	5
Layout	5x3	5x3	6x7	5x3	5x3
Paylines	10	243	117649	243	10
Min bet	0.1	0.25	0.4	0.2	0.2
Max bet	13	50	40	60	100
Features
Progressive	—	✓	—	—	—
Wild symbol	✓	✓	✓	✓	✓
Free spins	—	✓	✓	✓	✓
Scatter symbol	—	✓	✓	✓	✓
Multiplier	✓	✓	✓	✓	✓
Bonus game	—	—	✓	✓	✓
Respins	—	—	—	—	✓

Every number is shown as a delta against Crystal Furnace.

Comparing against

Crystal Furnace

Eyecon

RTP

96.56%

Max win

—

Score

+ Progressive+ Free Spins+ Scatter

+ Free Spins+ Scatter+ Bonus Game

+ Free Spins+ Scatter+ Bonus Game

Sticky Diamonds Flaming Link

+ Free Spins+ Scatter+ Bonus Game+ Respins

Explore More Games with Similar RTP

	Provider	RTP	Volatility	Max win	Score
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×	87
Fruit Lock 7	Fazi Interactive	96.54%	High volatility	3,000×	64
Razor Returns	Push Gaming	96.55%	High volatility	100,000×	87
Crystal Furnace	Eyecon	96.56%	Medium volatility	—	67
Shake Your Mummymaker	Rival Gaming	96.56%	High volatility	—	85
Nuwa	Habanero	96.57%	High volatility	50,000×	84
Pirate’s Pearl Megaways	GameArt	96.58%	High volatility	80,000×	89
Lunar Rabbit	GameArt	96.59%	High volatility	20,000×	87
Ninja Legend	Advant Play	96.6%	Medium volatility	8,000×	83