How is the prime-gap score calculated?
Each round draws two independent readings a and b, each uniformly chosen from 0 to 12. Set n = a + b + 1. Find the smallest prime p greater than or equal to n, then score p − n. If n is already prime, the score is zero: the calculation does not skip to the next strictly larger prime. For example, readings 0 and 0 give n = 1 and score 1; readings 0 and 1 give prime n = 2 and score zero.
How do ticket coverage and returns differ?
Choose a ticket before drawing: Lower accepts scores 0 and 1, Middle accepts 2 and 3, and Upper accepts 4 and 5. There are 169 equally likely ordered pairs of readings. Lower matches 115 pairs, Middle 51 and Upper 3. Each count divided by 169 is that ticket’s hit probability, not the probability that a session will be profitable. A matching score returns the captured stake multiplied by 0.96 × 169 ÷ the selected band’s coverage. The gross multipliers are approximately 1.410783 for Lower, 3.181176 for Middle and 54.08 for Upper. A miss returns zero. Each band’s exact expected gross return is 96%; a single round or session can differ from that average.
Can I change a ticket after the first reading?
Select a stake of 10, 20, 50 or 100 virtual coins. The default is 20 with the Lower ticket selected. Starting deducts one stake for both readings. Stake and ticket choices, restoration and another start are locked during the round; the sound control remains available. There are no extra bets, interim collection or automatic repeat rounds. The readings appear in sequence, not as two separate bets. Normally each reveal waits about 420 milliseconds. With reduced motion, each reading is revealed on its next animation frame. The second reveal completes the score and settles the captured stake. Revealing the first reading does not unlock settings or provide a collection opportunity.
How does fractional carry work?
The raw gross return is the captured stake multiplied by the outcome multiplier. Settlement adds the saved fractional carry to that raw return, then credits only the whole-number part of the sum. The remaining fraction is saved for later settlements. A zero-return round leaves the carry unchanged. The credited return is not a profit payment on top of a separately refunded stake.
When can I restore, and what happens on reload?
The local wallet starts with 1,000 virtual coins. Balance and fractional payout carry are saved in browser local storage, including a zero balance. While idle, a balance below 10 makes manual restoration available. Restoration sets the balance to exactly 1,000 and preserves the carry; it does not add 1,000, credit the carry immediately or run automatically. Reloading before settlement ends the unfinished round without refund, payout or resumption. Its captured stake stays deducted. Previously saved balance and carry remain, while stake selection returns to 20 and the Lower ticket is selected again. Unfinished readings and chosen settings are not saved for continuation.
Does the demo require an account?
The game stores the virtual-coin balance and fractional payout carry locally. The page also loads Manrope and Lora through Google Fonts and includes Statinside counter 44. These external requests are separate from the local wallet. Having no login or cashier does not establish anonymity or the absence of personal-data processing. There is no login or cashier. The guide has an 18+ intended audience, which is not an implemented age check.
Frequently asked questions
Is 96% a 96% chance of matching my ticket?
No. Lower covers 115/169 pairs, Middle 51/169 and Upper 3/169. The 96% figure is the expected gross return for each band, not its hit probability or a session guarantee.
How do I restore the balance?
While no round is active and the balance is below 10, use Restore balance. It sets the balance to 1,000 and preserves the fractional carry without immediately crediting it.
What happens if I reload before both readings settle?
The unfinished round ends without refund or payout, and its stake stays deducted. It cannot resume. The saved wallet and carry remain; controls return to stake 20 and Lower.
