Twelve bits and common divisors
Twelve independent fair binary steps reveal three blocks of four bits. Decode each completed block as 0–15 and add 1 to obtain a, b and c, each 1–16. Compute gcd(a+b,b+c) × gcd(b+c,c+a), where gcd is the greatest common divisor. Subtract the global minimum 1 to obtain the score. Before starting, choose the linear, squared or cubed score weight.
A quote that can fall
The gross multiplier starts at 0.97. At each step it equals 0.97 × conditional expected terminal weight / initial expected terminal weight, using the selected curve and the revealed bits. It can rise, fall or become zero. This is not a multiplier that always climbs. The displayed multiplier is rounded to four decimal places; settlement uses the unrounded value. Stake × multiplier is gross return, not net profit.
Settings and the main button
Choose a virtual stake of 10, 20, 50 or 100, a reward curve and automatic collection off or at 1.25×, 1.75× or 2.50×. Starting deducts and saves one stake. During the round, stake, settings, restoration and another start are locked; sound remains available. The main button becomes Collect current quote, allowing manual collection while the round remains active. Manual collection first processes any steps already due before settling the current quote.
Automatic collection and zero
Automatic collection triggers at the first step whose quote reaches or exceeds the selected threshold. It pays the actual current quote, including any overshoot, rather than exactly the preset threshold. At any one step, zero ends the round before collection. An automatic crossing at an earlier step settles the round before a later zero could occur. At step 12, any surviving positive quote is collected even if the automatic threshold was never reached.
Whole coins and fractional remainder
At settlement, stake × unrounded multiplier is added to the previously saved fractional remainder. The whole-number part is credited to the wallet, and the new fraction is stored separately for later rounds. The displayed wallet holds whole coins. A zero-return round preserves the previous remainder. The remainder persists through settlement, manual restoration and reload. Net wallet change is credited coins minus the stake deducted.
Reload and default settings
Reloading or leaving an unfinished round gives no refund, payout or resume. The stake deduction has already been saved. The wallet including zero and previously saved remainder remain while the browser retains the site's local data. Reload restores stake 20, the linear curve and automatic collection off; it does not restore the wallet to its initial balance or keep your selected settings.
Frequently asked questions
Can a later zero undo automatic collection?
No. An earlier threshold crossing settles the round before a later step. Zero takes precedence over collection only at the same processing event.
What happens on reload?
An unfinished round is not refunded or resumed. The saved stake deduction and previous carry remain. Settings return to stake 20, linear curve and automatic collection off.
How is fractional remainder handled?
The whole-number part of stake × unrounded multiplier plus previous remainder is credited; the new fraction is saved separately for later rounds.
