Yggdrasil Gaming

Gemstone Jam

Classic reel cabinet recast as a gemstone game show

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

94%

return to player

Volatility

High volatility

variance

Max win

10,000×

top multiplier

Min bet

$0.50

per spin

Reels

9 lines

Player rating

4.6 ★

12 votes

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Yggdrasil Gaming

Embed on your site

4.6 / 5

12 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 & RTP6/10

RTP 94% → 6.0/10

Volatility9/10

high → 9.0/10

Win Potential8/10

x10000.00 (10000×) → 8.0/10

Features3/10

6 features → 3.0/10

Game Mechanics3.3/10

f=6 r=5 p=9 → 3.3/10

Context signals (tie-breakers)

Layout6/10

5x3 → 6.0/10

Bet Flexibility4/10

0.5–50 (×100) → 4.0/10

Provider Reputation6.9/10

provider avg 6.9 → 6.9/10

Popularity2.5/10

synthetic proxy → 2.5/10

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: 52 — Gemstone Jam by Yggdrasil Gaming

https://slotranker.com/yggdrasil-gaming/gemstone-jam#score

How to cite

Slot Summary

A 3x3 reel cabinet that carries an x10000.00 ceiling gives Gemstone Jam an unusual contrast between compact format and large top potential. Yggdrasil Gaming recasts a classic slot as a television game show, using 9 changing paylines, Nudges, and Diamond Wild combinations rather than a separate bonus round. Its high-volatility math places the decisive payout weight on rare all-Wild results.

How It Plays

Each spin presents the compact reel cabinet as a game-show turn. The active arrangement can change, producing horizontal, vertical, diagonal, and V-shaped winning routes.

The Nudge responds to selected near misses by shifting reel positions. This keeps the base spin as the main event instead of diverting play into a separate feature screen.

Theme & Atmosphere

The Gems theme is treated as television-stage spectacle, with polished stones and the Diamond Wild serving as prizes inside a deliberately retro format.

Rather than presenting Gems as buried treasure, the game frames them as showpiece awards, linking the reel cabinet to a public game-show contest.

Gems

Features & Win Potential

Nudges can reveal a win by changing reel positions after the initial stop, while the 9-line arrangement makes several geometric pay patterns possible.

Wild Multipliers and the Wild Symbol concentrate the largest outcomes on Diamond combinations. Fixed Jackpots provide named targets without adding a separate bonus round.

Wild Symbol Wild Multipliers Nudges Expanding Symbols RTP range Fixed Jackpots

Spec sheet

Gemstone Jam at a glance.

Identity

Slot nameGemstone Jam

StudioYggdrasil Gaming

Released

Math

SlotRanker Score52

RTP94%

VolatilityHigh volatility

Max win10,000×

Bet range$0.50 – $50.00

Player rating4.6 / 5 · 12 votes

Format

Reels5

Paylines9

Layout5x3

Features

Themes

Expected average based on this slot's 94% RTP — individual sessions vary with volatility.

Bet per spin

Spins per hour400

Session length (hours)

Cost per hour$12.00

Cost per session$12.00

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 Gemstone Jam? 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 (94.00%), with wins capped at its top multiplier (10,000×).

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 Gemstone Jam

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Compare Gemstone Jam with other games

	Gemstone Jam Score 52This game	Ultra Cluster Kingdom Score 92	Pine of Plinko 2 Score 90	Ruby Royal Score 89	Max Megaways Score 88
Identity
Studio	Yggdrasil Gaming	GameArt	Print Studios	Popiplay	Big Time Gaming
Released	—	9/24/2024	12/7/2023	11/15/2024	9/21/2022
Math
RTP	94%	—	96.32%	97.11%	96.37%
Volatility	High volatility	High volatility	High volatility	High volatility	High volatility
Max win	10,000×	—	20,000×	10,100×	139,200×
Format
Reels	5	8	5	5	6
Layout	5x3	8x8	5x3	5x3	6x7
Paylines	9	Cluster Pays	10	15	117649
Min bet	0.5	0.2	0.1	0.1	0.2
Max bet	50	200	1	20	1
Features
Progressive	—	—	—	—	—
Wild symbol	✓	—	—	✓	✓
Free spins	—	✓	✓	✓	✓
Scatter symbol	—	✓	✓	✓	✓
Multiplier	—	—	—	✓	✓
Bonus game	—	✓	✓	✓	—
Respins	—	—	—	✓	—

Every number is shown as a delta against Gemstone Jam.

Comparing against

Gemstone Jam

Yggdrasil Gaming

RTP

94%

Max win

10,000×

Score

Ultra Cluster Kingdom

+ Free Spins+ Scatter+ Bonus Game− Wild

+ Free Spins+ Scatter+ Bonus Game− Wild

+ Free Spins+ Scatter+ Multiplier+ Bonus Game+ Respins

+ Free Spins+ Scatter+ Multiplier

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