fall2Cardboard Automaton
18+ · free demo · virtual coins

FALL2 — Simulator Rules

One whole captured stake launches two independent twelve-row fair balls. Each lane index is its right-step count plus one, between one and thirteen. Raw score is the product of the two indices when their greatest common divisor is one; otherwise zero. The pair settles once after both balls finish. Six separately priced pairs mean at most twelve visible balls.

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These are this guide's original rules. Visual resemblance, game-category names and search snippets provide no evidence about an external commercial game.

The actual simulator rules

One whole captured stake launches two independent twelve-row fair balls. Each lane index is its right-step count plus one, between one and thirteen. Raw score is the product of the two indices when their greatest common divisor is one; otherwise zero. The pair settles once after both balls finish. Six separately priced pairs mean at most twelve visible balls.

These are this guide's original rules. Visual resemblance, game-category names and search snippets provide no evidence about an external commercial game.

Worked scoring examples

Lane indices four and nine score36; four and eight score0. Two all-left paths give indices1 and1 and score1. Two all-right paths give13 and13 and score0. Lane indices are right counts plus one, not signed horizontal positions.

Exact weighted expected gross return

For each lane pair i,j from1 to13, probability is C(12,i−1) × C(12,j−1) / 2²⁴. These169 pairs are not equally likely. Low, Medium and High use weight √s, s and s². Gross credit is one whole captured stake ×0.96×weight / exact mean weight. All modes have exact96% expected gross return including the stake. Zero scores pay zero; modes do not change positive-score probability. No row shares or mid-path payments apply.

Captured settings and local wallet

A new wallet starts with1000 virtual coins. Choose10,20,50 or100 per priced pair. Launch deducts one full stake and captures stake and mode. Up to six priced pairs, twelve visible balls, may be active. Both balls finish before the one pair result is credited. Future control changes leave active settings intact. Settled balance and fractional-credit carry persist in localStorage. Auto10 queues ten pairs; Stop cancels future launches. Refill locks while any launch or queue remains active. While idle below10, optional refill sets balance to1000 and preserves carry. Reload does not replenish settled funds; refill is not automatic.

Frequently asked questions

How does the actual simulator rules work?

One whole captured stake launches two independent twelve-row fair balls. Each lane index is its right-step count plus one, between one and thirteen. Raw score is the product of the two indices when their greatest common divisor is one; otherwise zero. The pair settles once after both balls finish. Six separately priced pairs mean at most twelve visible balls. These are this guide's original rules. Visual resemblance, game-category names and search snippets provide no evidence about an external commercial game.

How does worked scoring examples work?

Lane indices four and nine score36; four and eight score0. Two all-left paths give indices1 and1 and score1. Two all-right paths give13 and13 and score0. Lane indices are right counts plus one, not signed horizontal positions.

How does exact weighted expected gross return work?

For each lane pair i,j from1 to13, probability is C(12,i−1) × C(12,j−1) / 2²⁴. These169 pairs are not equally likely. Low, Medium and High use weight √s, s and s². Gross credit is one whole captured stake ×0.96×weight / exact mean weight. All modes have exact96% expected gross return including the stake. Zero scores pay zero; modes do not change positive-score probability. No row shares or mid-path payments apply.