The original game
Twelve-cell expedition places three mines uniformly among twelve cells. Choose stake10,25,50 or100 and safe target1,2 or3. Start debits the stake; hitting a mine loses it. Reaching the target settles automatically, with no early cashout.
Probability and gross return
Targets1,2 and3 succeed with probabilities3/4,6/11 and21/55. Their gross multipliers are32/25,44/25 and88/35. Each has96% theoretical RTP, a long-run expectation rather than a session promise. Gross return includes the original stake and differs from net profit.
Wallet and settlement
Whole coins and fractional carry persist in the browser. The manual refill sets balance1000 only when idle below10 and preserves the fraction. Reloading forfeits unfinished stakes without resuming the board. The coins have no cash value.
Frequently asked questions
What is the house edge in the Twelve-cell demo?
The house edge is exactly 4% across all three modes, resulting in a 96% theoretical RTP.
How does the wallet restore balance?
You can manually set the balance to 1000 only when idle and the balance is below 10. It sets the amount, it does not add to it.
