The game uses a virtual-coin wallet. Reloads do not refund unfinished draws. No account login or real-money cashier is present in this demo.
Game Mechanics: Nested Intervals
The core mechanic involves four independent uniform readings from a thirteen-pocket range (0–12).
- Interval A: Formed by the first two readings, sorted into a closed interval.
- Interval B: Formed by the last two readings, sorted into a closed interval.
- Raw Score: Calculated based on true containments:
- Equal intervals score 2.
- Proper containment (A contains B or B contains A) scores 1.
- Neither scores 0.
- Singleton intervals remain valid.
Tickets can overlap. You must choose one ticket before spinning.
Payouts and Settlement
For a selected ticket, the gross payout is calculated as:
| Condition | Gross Payout |
|---|---|
| Miss | 0 |
| Win | 0.96 × captured whole stake × total support / number of winning ordered outcomes |
All independent draws are uniform thirteen-pocket values (0–12). Exact winning counts and support are recorded in math modes. Different tickets can overlap.
Settlement takes 480ms. Stake, ticket, and refill options remain locked throughout active settlement and any auto-queue.
Modes and Controls
- Stake Coverage: One whole stake covers the complete multi-spin outcome.
- Tickets: Preselect Lower, Upper, or Even-score tickets. Exact cutoffs and approximate gross multipliers are displayed.
- Auto Mode: Queues at most ten draws.
- Stop: Cancels future draws; active draws finish and settle.
- No Early Bank: No early bank is available.
Sound remains available during these states.
Mathematical Evidence
Simulation measurements are supporting sample observations, not the mathematical payout law. The exact expected value is distinct from measured estimates.
| Ticket | Exact Probability | Exact Gross RTP | Measured RTP | Winning Draws (1M) |
|---|---|---|---|---|
| 0 (Lower) | 16172/28561 | 0.96 | 96.03% | 566,403 |
| 1 (Upper) | 12389/28561 | 0.96 | 95.90% | 433,300 |
| 2 (Even) | 16497/28561 | 0.96 | 96.05% | 577,926 |
Different modes have different distributions; expected RTP is not a promised session result.
Wallet and Persistence
- Initial Balance: 1000 virtual coins.
- Refill: When fully idle and balance is below 10, manual refill sets the balance to exactly 1000. Fractional carry is preserved.
- Persistence: Settled balance persists locally, including zero. Fractional carry persists across settlement, refill, and reload.
- Reload: Discards unfinished draws without refund. Unfinished rounds do not resume.
- Busy Controls: Stake, mode, and refill are locked while active and through any auto queue.
Privacy and Storage
- Storage: The demo uses browser localStorage for settled balance and fractional carry. This does not establish anonymity or exclude other processing.
- Third Parties: The template declares a Google Fonts stylesheet. Actual browser request capture is pending; this is not a claim that other requests or processing are absent.
- Account/Payment: No account login flow or payment flow is present in this demo.
The absence of account or payment controls in the demo does not prove that no personal data are processed.
Frequently asked questions
What is the exact payout formula for a win?
For a selected ticket, the gross payout is 0 on a miss. On a win, it is 0.96 × captured whole stake × total support / number of winning ordered outcomes.
How does the refill mechanism work?
When the demo is fully idle and the balance is below 10, a manual refill sets the balance to exactly 1000. Fractional carry is preserved during this process.
What happens if I reload the page during a draw?
Reloading discards unfinished draws without refund. Unfinished rounds do not resume upon reload.
