Yggdrasil Gaming

Gem Rocks

Slots Video Slots 3D Slots Fantasy Magic Gems Star Music Monsters

Gem-hearted giants turn winning chains into oversized symbol blocks

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

96.2%

return to player

Volatility

Medium volatility

variance

Max win

9,217×

top multiplier

Min bet

$0.25

per spin

Reels

4096 lines

Player rating

3.6 ★

13 votes

DEMO Play free, no signup

Yggdrasil Gaming

Embed on your site

3.6 / 5

13 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 96.2% → 9.0/10

Volatility8/10

medium → 8.0/10

Win Potential7.9/10

x9217.00 (9217×) → 7.9/10

Features9/10

11 features → 9.0/10

Game Mechanics8.2/10

f=11 r=6 p=4096 → 8.2/10

Context signals (tie-breakers)

Layout5/10

6x4 → 5.0/10

Bet Flexibility8/10

0.25–1000 (×4000) → 8.0/10

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: 74 — Gem Rocks by Yggdrasil Gaming

https://slotranker.com/yggdrasil-gaming/gem-rocks#score

How to cite

Slot Summary

A wall of gems becomes a test of consecutive wins in Yggdrasil Gaming's Gem Rocks. Gentle stone giants give its fantasy setting a direct connection to play, appearing as large blocks of matching symbols when a cascade lasts long enough. The defining event happens inside the ongoing spin: another winning drop brings a larger rock closer.

How It Plays

Matching symbols pay across consecutive columns from the left, beginning with at least 3 matching reels. Winning symbols disappear and replacements drop into the gaps, using the original bet throughout the sequence.

The Gem Rock meter awards a 2x2 Monster Rock after 2 consecutive wins, a 3x3 after 5, and a 4x4 after 9. Each block contains matching symbols and guarantees a win when awarded.

Features & Win Potential

The meter stops recording further wins once it reaches 9. A continuing cascade can still produce payouts, but it cannot activate additional Gem Rock awards until the meter has reset.

A guaranteed win from a Monster Rock does not specify the payout amount. The symbol represented and the matching positions across consecutive reels determine how much that particular arrangement pays.

High volatility 6 Reels Multiplier Scatter Symbol Wild Symbol Cascading Medium volatility Bonus Game RTP range 96% RTP Avalanche

Spec sheet

Gem Rocks at a glance.

Identity

Slot nameGem Rocks

StudioYggdrasil Gaming

Released2/19/2018

Math

SlotRanker Score74

RTP96.2%

VolatilityMedium volatility

Max win9,217×

Bet range$0.25 – $1000.00

Player rating3.6 / 5 · 13 votes

Format

Reels6

Paylines4096

Layout6x4

Features

Themes

Expected average based on this slot's 96.2% RTP — individual sessions vary with volatility.

Bet per spin

Spins per hour400

Session length (hours)

Cost per hour$3.80

Cost per session$3.80

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 Gem Rocks? 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 (96.20%), with wins capped at its top multiplier (9,217×).

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 Gem Rocks

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Compare Gem Rocks with other games

	Gem Rocks Score 74This game	Wild Flower Score 84	Shadow Treasure Score 82	Moon Rising Score 79	Starlight Princess Score 77
Identity
Studio	Yggdrasil Gaming	Big Time Gaming	NowNow Gaming	Reloaded Gaming	Pragmatic Play
Released	2/19/2018	4/22/2021	11/25/2024	10/28/2022	9/10/2021
Math
RTP	96.2%	96.52%	96.29%	96.61%	95.51%
Volatility	Medium volatility	High volatility	Medium/High	High volatility	High volatility
Max win	9,217×	114,100×	12,000×	4,000×	5,000×
Format
Reels	6	6	5	6	6
Layout	6x4	6x4	5x5	6x5	6x5
Paylines	4096	4096	14	Pay Anywhere	20
Min bet	0.25	0.2	0.1	0.1	0.2
Max bet	1000	10	100	100	5
Features
Progressive	—	—	—	—	✓
Wild symbol	✓	✓	✓	✓	✓
Free spins	—	✓	✓	✓	✓
Scatter symbol	✓	✓	—	—	✓
Multiplier	✓	✓	✓	✓	✓
Bonus game	✓	—	—	✓	—
Respins	—	—	✓	—	—

Every number is shown as a delta against Gem Rocks.

Comparing against

Gem Rocks

Yggdrasil Gaming

RTP

96.2%

Max win

9,217×

Score

+ Free Spins− Bonus Game

+ Free Spins+ Respins− Scatter− Bonus Game

+ Free Spins− Scatter

+ Progressive+ Free Spins− Bonus Game

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