Yggdrasil Gaming
Gemstone Jam
Play Gemstone Jam slot by Yggdrasil Gaming for free in demo mode! Explore RTP, bonus rounds, and key features before playing for real.
RTP
94%
return to player
Volatility
High volatility
variance
Max win
10,000×
top multiplier
Min bet
$0.50
per spin
Reels
5
9 lines
Player rating
4.6 ★
12 votes
Why this score
High confidence (100%)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 Mechanics10/10
f=6 r=5 p=9 → 10.0/10
Context signals (tie-breakers)
Layout6/10
5x3 → 6.0/10
Bet Flexibility4/10
0.5–50 (×100) → 4.0/10
Provider Reputation7.6/10
provider avg 7.6 → 7.6/10
Popularity4/10
synthetic proxy → 4.0/10
DEMO Play free, no signup
Yggdrasil Gaming
Spec sheet
Gemstone Jam at a glance.
Math
Index score63
RTP94%
VolatilityHigh volatility
Max win10,000×
Bet range$0.50 – $50.00
Player rating4.6 / 5 · 12 votes
Format
Reels5
Paylines9
Layout5x3
Features
Themes
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