Fa Chai Gaming
Open Vault
Play Open Vault slot by Fa Chai Gaming for free in demo mode! Explore RTP, bonus rounds, and key features before playing for real.
RTP
96.5%
return to player
Volatility
High volatility
variance
Max win
10,000×
top multiplier
Min bet
$0.10
per spin
Reels
5
2000 lines
Player rating
4.2 ★
20 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 & RTP9/10
RTP 96.5% → 9.0/10
Volatility9/10
high → 9.0/10
Win Potential8/10
x10000.00 (10000×) → 8.0/10
Features10/10
13 features → 10.0/10
Game Mechanics10/10
f=13 r=5 p=2000 → 10.0/10
Context signals (tie-breakers)
Layout6/10
5x3 → 6.0/10
Bet Flexibility6/10
0.1–100 (×1000) → 6.0/10
provider avg 9.0 → 9.0/10
Popularity8/10
synthetic proxy → 8.0/10
DEMO Play free, no signup
Fa Chai Gaming
Spec sheet
Open Vault at a glance.
Math
Index score87
RTP96.5%
VolatilityHigh volatility
Max win10,000×
Bet range$0.10 – $100.00
Player rating4.2 / 5 · 20 votes
Format
Reels5
Paylines2000
Layout5x3
Features
Themes
Compare Open Vault with other games
 Open Vault Score 87This game |  Alice in WildLand Score 86 |  Enchanted Bean Boost Score 65 |  Medea Score 78 |  Dragon's Code Score 74 | |
|---|---|---|---|---|---|
| Identity | |||||
| Studio | |||||
| Released | — | 9/2/2021 | — | 1/14/2022 | 12/30/2024 |
| Math | |||||
| RTP | 96.5% | 96.33% | — | — | 97.32% |
| Volatility | High volatility | High volatility | — | — | — |
| Max win | 10,000× | 12,000× | — | 150,000× | 1,000× |
| Format | |||||
| Reels | 5 | 5 | 5 | 5 | 5 |
| Layout | 5x3 | 5x4 | 5x3 | 5x3 | 5x3 |
| Paylines | 2000 | 40 | 25 | 25 | 50 |
| Min bet | 0.10 | 0.20 | 0.10 | 0.25 | 0.50 |
| Max bet | 100.00 | 30.00 | 100.00 | 1000.00 | 125.00 |
| Features | |||||
| Progressive | — | — | — | ✓ | — |
| Wild symbol | ✓ | ✓ | ✓ | ✓ | ✓ |
| Free spins | ✓ | ✓ | ✓ | ✓ | — |
| Scatter symbol | ✓ | ✓ | ✓ | — | — |
| Multiplier | ✓ | ✓ | — | ✓ | — |
| Bonus game | — | — | ✓ | — | — |
| Respins | — | — | ✓ | ✓ | ✓ |
Every number is shown as a delta against Open Vault.
Comparing against
Open Vault
Fa Chai Gaming
RTP
96.5%
Max win
10,000×
Score
87
Alice in WildLand
SpinPlay Games
RTP
96.33%▼−0.2
Volatility
High volatilityMax win
12,000×▲+2,000
Score
86▼−1
Same feature set
Enchanted Bean Boost
Inbet Games
RTP
—
Volatility
—Max win
—
Score
65▼−22
+ Bonus Game+ Respins− Multiplier
Medea
Royal Slot Gaming
RTP
—
Volatility
—Max win
150,000×▲+140,000
Score
78▼−9
+ Progressive+ Respins− Scatter
Dragon's Code
Smartsoft Gaming
RTP
97.32%▲+0.8
Volatility
—Max win
1,000×▼−9,000
Score
74▼−13
+ Respins− Free Spins− Scatter− Multiplier
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