The initial integer wallet is 1,000 virtual coins. When idle with an integer balance below 10, manual refill sets that integer balance to 1,000 while retaining fractional carry. Settlement adds the saved carry to the gross return, credits the whole-number portion and stores the remainder. Balance and carry persist in this browser, including a zero balance. Reloading an unfinished round keeps its stake deducted and ends it without refund, return or resume.
Game Mechanics and Board Support
The board has four rows and four columns. Choose 3, 4 or 5 mines. Empty rows are allowed and may repeat. Only the nonzero four-bit row patterns must be distinct. The legal-board counts are 400, 1,264 and 2,928 respectively. Every board in the selected legal set has equal probability; the sampler uses cryptographic 32-bit draws with rejection to avoid modulo bias.
Scoring and Gross Payout
The score function relies on the shrinking support set after each safe reveal. The gross payout is calculated as a percentage of the captured stake.
| Component | Formula / Rule |
|---|---|
| Gross Quote | 0.96 × captured stake × initial support / current compatible support |
| Mine Hit | Returns zero gross |
| Auto-Bank | Triggers when no eligible cell remains |
For example, with 3 mines, revealing the first safe cell (path [0]) leaves a support of 325, resulting in a gross multiplier of approximately 1.18. Revealing three safe cells (path [0,1,2]) leaves a support of 216, yielding a gross multiplier of approximately 1.78.
Controls and Modes
Stake choices are 10, 20, 50, 100 and 200 virtual coins, with 20 selected initially. Mine choices are 3, 4 and 5, initially 3. Stake, mine count and refill lock during a round; sound remains available. Manual banking starts after the first safe reveal. A mine settles with zero gross return. Certain mines and cells whose safe quote would exceed 1,000 times the stake are disabled before a reveal. Revealing all safe cells, or having no eligible reveal remaining, banks the current quote automatically. There is no automatic queue, pause button, enforced timer or self-exclusion control.
Mathematical Evidence and RTP
Gross quote = 0.96 × captured stake × initial legal-board count ÷ current compatible-board count. Gross includes the returned stake and is not net profit. Exact expected gross RTP is 96%, not a guaranteed session result. Simulation percentages are observations: for example, the saved 3-mine first-cell sample measured 95.94% over 1,000,000 rounds. Rounded examples below are for readability and do not change the exact formula.
The exact gross RTP is 0.96 across all modes. Simulation measurements support this but are not the mathematical law.
| Mines | Policy | Exact RTP | Measured RTP (%) | Example Path | Gross Multiplier |
|---|---|---|---|---|---|
| 3 | 0 | 0.96 | 95.94% | [0] | 1.18 |
| 3 | 5 | 0.96 | 96.37% | [0,3,6...] | 384 |
| 5 | 5 | 0.96 | 95.54% | [0,3,6...] | 702.72 |
Measured RTP varies by sample size and path, but the exact expected return remains 0.96.
Wallet and Balance
The initial integer wallet is 1,000 virtual coins. When idle with an integer balance below 10, manual refill sets that integer balance to 1,000 while retaining fractional carry. Settlement adds the saved carry to the gross return, credits the whole-number portion and stores the remainder. Balance and carry persist in this browser, including a zero balance. Reloading an unfinished round keeps its stake deducted and ends it without refund, return or resume.
Privacy and Storage
The demo stores its wallet balance and fractional carry in browser localStorage. This is local persistence, not an assurance of anonymity or an inventory of all data processing. The template declares Google Fonts, and the production builder declares Statinside visitor analytics counter 44. These declarations do not establish server retention or what every request contains; actual browser capture is pending. Clearing cached files alone need not remove localStorage. Use the browser settings for this site’s stored data to remove it.
Frequently asked questions
How is the board drawn?
Every board in the selected 3-, 4- or 5-mine legal set has equal chance. Nonzero four-bit row patterns must be distinct; empty rows may repeat. Cryptographic 32-bit rejection sampling avoids modulo bias.
What happens if I hit a mine?
A mine ends the round immediately with a gross return of zero.
When can I bank manually?
Manual bank is available only after at least one safe reveal has occurred.
How does the 1000× cap work?
Cells whose safe quote would exceed 1000 times the stake are disabled. If no eligible cell remains, the quote is automatically banked.
Does fractional carry persist?
Yes, fractional carry persists across settlement, refill, and reload.
What happens on reload during a round?
An unfinished round ends without refund or resume. The balance is not restored to the pre-round state.
How do I refill my balance?
Perform a manual refill while idle and when the balance is below 10. This sets the integer wallet to exactly 1000.
Is there an auto-queue feature?
No. New rounds must be started manually. The current return is banked automatically when all safe cells are revealed or no eligible reveal remains.
What is the exact RTP?
The exact gross RTP is 0.96 for all mine counts and policies.
Does the demo use external payments?
No, the demo uses virtual coins with no cash value and no payment flow.
What data is stored?
The wallet balance and fractional carry use browser localStorage. Google Fonts and Statinside visitor analytics are declared. Local persistence does not establish anonymity or exclude other processing.
Is this an official casino app?
No, this is an independent guide's demo. It does not certify or reproduce any outside product.
