Greentube
Diamond Mystery - 40 Charming 7's 6reels
Six-reel fruit slot with stacked sevens and jackpot picking
SlotRanker Score
31
/ 99
31
05099
The SlotRanker Score is calculated from the visible data below. It is not affected by affiliate deals, and it cannot be bought.
RTP
—
return to player
Volatility
—
variance
Max win
—
top multiplier
Min bet
—
per spin
Reels
6
40 lines
Player rating
4.9 ★
8 votes
DEMO Play free, no signup
Greentube
Why this score
Sparse data (43%) — interpret with cautionFive weighted signals shape the composite. Four context signals refine ties. See how we rate for the full methodology.
Payouts & RTP—
no data
Volatility8/10imputed
imputed medium (unknown) → 8.0/10
Win Potential—
no data
Features0.5/10
1 features → 0.5/10
Game Mechanics4.6/10
f=1 r=6 p=40 → 4.6/10
Context signals (tie-breakers)
Layout5/10
6x5 → 5.0/10
Provider Reputation5.5/10
provider avg 5.5 → 5.5/10
Popularity0/10
synthetic proxy → 0.0/10
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: 31 — Diamond Mystery - 40 Charming 7's 6reels by Greentube
https://slotranker.com/greentube/diamond-mystery-40-charming-7s-6reels#scoreSlot Summary
Greentube stretches a classic fruit-machine concept across six reels, using the stacked Wild Seven to keep the familiar symbol set central. Its main departure is the Diamond Mystery feature: a nonwinning spin can lead to a card-pick game where matching three gems determines one of four jackpot levels.
Spec sheet
Diamond Mystery - 40 Charming 7's 6reels at a glance.
Math
SlotRanker Score31
RTP
Max win—
Bet range—
Player rating4.9 / 5 · 8 votes
Format
Reels6
Paylines40
Layout6x5
Features
Themes
Where to play Diamond Mystery - 40 Charming 7's 6reels
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Compare Diamond Mystery - 40 Charming 7's 6reels with other games
 Diamond Mystery - 40 Charming 7's 6reels Score 31This game |  Max Megaways Score 88 |  Midnight Marauder Score 85 |  Laced Score 83 |  Ecuador Gold Score 83 | |
|---|---|---|---|---|---|
| Identity | |||||
| Studio | |||||
| Released | — | 9/21/2022 | 5/24/2022 | 11/23/2025 | 2/19/2019 |
| Math | |||||
| RTP | — | 96.37% | 96.19% | 96.12% | 96.1% |
| Volatility | — | High volatility | High volatility | High volatility | High volatility |
| Max win | — | 139,200× | 30,000× | 20,000× | — |
| Format | |||||
| Reels | 6 | 6 | 6 | 5 | 6 |
| Layout | 6x5 | 6x7 | 6x6 | 3x5 | 6x4 |
| Paylines | 40 | 117649 | 7776 | 7776 | 262144 |
| Min bet | — | 0.2 | 0.1 | 0.1 | 0.2 |
| Max bet | — | 1 | 30 | 50 | 100 |
| Features | |||||
| Progressive | — | — | ✓ | — | — |
| Wild symbol | — | ✓ | ✓ | ✓ | ✓ |
| Free spins | — | ✓ | ✓ | ✓ | ✓ |
| Scatter symbol | — | ✓ | ✓ | ✓ | ✓ |
| Multiplier | — | ✓ | ✓ | ✓ | ✓ |
| Bonus game | — | — | — | — | ✓ |
| Respins | — | — | ✓ | — | — |
Every number is shown as a delta against Diamond Mystery - 40 Charming 7's 6reels.
Comparing against
Diamond Mystery - 40 Charming 7's 6reels
Greentube
RTP
—
Max win
—
Score
31
Max Megaways
Big Time Gaming
RTP
96.37%
Volatility
High volatilityMax win
139,200×
Score
88▲+57
+ Wild+ Free Spins+ Scatter+ Multiplier
Midnight Marauder
Relax Gaming
RTP
96.19%
Volatility
High volatilityMax win
30,000×
Score
85▲+54
+ Progressive+ Wild+ Free Spins+ Scatter+ Multiplier+ Respins
Laced
Shady Lady
RTP
96.12%
Volatility
High volatilityMax win
20,000×
Score
83▲+52
+ Wild+ Free Spins+ Scatter+ Multiplier
Ecuador Gold
ELK Studios
RTP
96.1%
Volatility
High volatilityMax win
—
Score
83▲+52
+ Wild+ Free Spins+ Scatter+ Multiplier+ Bonus Game
Series
Diamond Mystery
| Game | Year | RTP | Volatility | Slot Score |
|---|---|---|---|---|
 Diamond Mystery 40 Imperial CrownGreentube | 2023 | 95.48% | Medium volatility | 50 |
| 2023 | 95.48% | — | 50 | |
| 2023 | 95.48% | Medium volatility | 53 | |
| 2023 | 95.48% | — | 51 | |
 Diamond Mystery Fruitilicious deluxeGreentube | 2024 | 95.48% | Low/Medium | 53 |
| 2024 | — | 40 | ||
 Diamond Mystery Stars InfernoGreentube | 2024 | 94.25% | Medium volatility | 57 |
 Diamond Mystery 100 Wild FireGreentube | 2024 | 95.48% | — | 55 |
 Diamond Mystery Fortune StreaksGreentube | 2024 | 95.48% | — | 59 |
 Diamond Mystery - 40 Charming 7'sGreentube | 2024 | 95.48% | — | 49 |
| 2025 | 95.48% | Medium volatility | 56 | |
 Diamond Mystery - 100 Charming 7'sLatestGreentube | 2025 | 95.48% | — | 49 |
 Diamond Mystery - 40 Charming 7's 6reelsCurrentGreentube | — | — | 31 |
- Greentube · 2025RTP95.48%Score56Medium volatility
- Diamond Mystery - 40 Charming 7's 6reelsCurrentGreentube · —RTP—Score31
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