Independent guide · original demo · 18+

Paper Bridges: Probability and Payout Analysis

The official website of vn777.

The official website of vn777. This guide details the actual mathematical expectations and settlement rules for the Paper Bridges demo. It uses only evidenced facts from the original virtual environment, not generic gambling assumptions.

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Game Structure and Gross Returns

Paper Bridges features four rows of three bridges with one hidden hazard per row. Players choose one bridge per row, with gross returns of 1.44x, 2.16x, 3.24x, and 4.86x after one to four safe selections. The stake is deducted once at the start, and the game settles automatically after the fourth row. Exiting manually or hitting a hazard ends the round immediately.

Probability and Expected RTP

The probability of surviving k rows is calculated as (2/3)^k. The expected return is 0.96, confirmed by simulation data showing simulated RTPs between 95.95% and 96.12% across one million rounds. This 96% expected return applies to all stake levels, which are 10, 25, 50, or 100 coins. The default stake is 25 coins, and no single mode guarantees higher returns than the mathematical average.

Wallet Rules and Settlement

Stakes are deducted immediately, and gross returns include the original stake. Fractional returns are persisted as hundredths and added to a saved carry, while only floor whole coins are credited to the wallet. A manual refill restores the balance to 1000 only when idle and below 10. Reloading the page discards unfinished rounds without refund or resumption.

Frequently asked questions

Does the demo account have cash value?

No, the virtual coins used in this demo have no cash value. There is no cashier, deposit, or withdrawal mechanism for these coins.

What happens if I reload the page?

Reloading discards any unfinished round without refund. The stake remains deducted, and the game resets to the default state without resuming the previous session.