21v Guide and Original Demo

A draw produces eight independent symbols, each equally likely to be 0 or 1. The score depends on the ordered word, rather than its number of zeros, ones or runs.

For each symbol, consider consecutive occurrences of that same symbol in its occurrence list. Count a pair only when at least one position lies between its two ends. Those interior positions must all contain the opposite symbol. Square the number of interior positions, then add the contributions for both symbols.

The two matching ends are excluded from the length. Adjacent matching symbols contribute nothing, and a pair cannot skip another occurrence of the same symbol. This is a sum of squared interior lengths, not a count of adjacent runs.

The word 00000000 scores zero. In 01010101, six qualifying pairs each have one interior position, so the score is 6. In 00110011, two qualifying pairs each have two interior positions, giving 4 plus 4, or 8.

Choose Score, Score squared or Score cubed before drawing. Their payout weights are the raw score, its square and its cube, respectively. They use separate exact mean weights: 8.8125, 116.640625 and 2003.203125.

Each mean averages that mode's weight across all 256 equally likely eight-symbol words. Squaring or cubing changes the spread of returns; it does not make a zero raw score positive.

Raw gross return equals the captured stake multiplied by 0.96, multiplied by the selected payout weight, then divided by that mode's exact mean. A zero raw score returns zero in every mode.

Each mode has an exact expected gross return of 96%. That percentage is not the chance of a positive return, a guaranteed session result or a promise of net profit. A positive return can still be smaller than the stake.

Gross return is what the draw returns after its stake has already been deducted. It is not profit added on top of a returned stake.

The saved samples contain one million draws per mode. Measured gross returns were approximately 96.026% for Score, 96.132% for Score squared and 96.038% for Score cubed.

These are observed sample results. The exact 96% expectation follows from the uniform eight-symbol outcomes, separate mean weights and payout formula. Samples and individual sessions can differ from that expectation.

Choose a stake of 10, 20, 50, 100 or 200 virtual coins and a payout mode before pressing Draw word. The defaults are 20 coins and Score. Starting captures and deducts one whole stake for the complete eight-symbol word.

The normal animation lasts about 480 milliseconds; reduced-motion settings can shorten it. The complete word settles once. Its individual symbols do not settle separately, and there is no early collection.

Stake, mode, restoration and starting another draw are locked while a draw, automatic queue or scheduled next draw is active. Sound remains available. Selected stake and mode remain after settlement; reloading restores 20 coins and Score.

Auto10 requests up to ten complete draws, each requiring a new affordable stake. It is not one stake shared across ten words. A draw cannot start if its stake exceeds the available balance.

Stop future draws cancels later queued draws and a scheduled next draw. An active draw continues and settles normally. Stop does not pause the active animation, collect early or refund its captured stake.

Automatic draws normally have a 180-millisecond gap before the next start. Stake, mode and restoration stay locked through the queue and scheduled gaps; sound remains available.

At settlement, add saved fractional carry to the raw gross return, credit the whole-number part and save the remaining fraction. For example, a raw return of 12.4 coins plus 0.8 carry credits 13 coins and retains 0.2.

A zero raw return leaves carry unchanged. Carry persists across settlement, restoration and reload. The displayed balance uses whole coins; carry is a separate saved payout fraction.

A new wallet starts with 1,000 virtual coins. Balance and fractional carry are saved in browser local storage, including a settled zero balance. The coins have no cash value and cannot be purchased, withdrawn or exchanged for money.

Restore demo balance is available only when no draw, automatic queue or scheduled next draw is active and balance is strictly below 10. It manually sets balance to exactly 1,000, replacing the old amount rather than adding 1,000. Carry is retained.

These saved values are a local demo wallet, not a synchronized account or a guarantee of recovery after browser data are removed.

Reloading during an unfinished draw ends it. Its captured stake remains deducted without refund, payout or resumption. Saved balance and carry remain; stake and mode reset to 20 coins and Score.

Wait for settlement before reloading if you want that draw's return credited. Clearing cached files may leave local storage intact. Use the browser's controls for this site's stored data if you intend to remove its wallet.

The browser saves the demo balance and fractional carry in local storage. The pages load Google Fonts stylesheets and font files for Public Sans and DM Serif Display and include Statinside visitor analytics using counter 44.

The absence of an account or cashier does not establish anonymity or the absence of personal-data processing. The observed integrations do not establish complete server logging, analytics fields, cookie behavior or retention periods.

This guide and its original demo are intended for adults aged 18 or over. That is an audience policy, not an implemented age check or a statement about local law.

Choose a stopping time and a personal virtual-coin limit before playing. Restoration and Auto10 do not enforce those limits. Stop and seek appropriate qualified help locally if play becomes difficult to control or causes distress.