Virtual Coins and Game Nature
The official website of 83f. The Square Range Mines demo uses virtual play coins. These coins are provided for entertainment and demonstration purposes only. They do not represent real money, have no cash value, and cannot be deposited, withdrawn, or exchanged for prizes. There is no cashier, payment gateway, or account balance linked to external financial services. The game is a browser-based simulation running locally in your device.
Game Mechanics: Square Range Mines
The game is played on a 4x4 board with labels 1 through 16 in row-major order. Before each round, you must select 3, 4, or 5 hazards. The hazards are chosen from a finite support of complete subsets where the difference between the largest and smallest hazard labels is a perfect square. For example, with 3 hazards, there are 92 possible subsets.
You start with an initial quoted value of 97% of your captured stake. When you reveal a safe square, the current gross value is divided by the exact posterior safe probability. You may collect only after at least one safe reveal; you can then collect or choose another eligible cell. Choices are disabled if their gross return exceeds 1000 times the stake, though equality is allowed. The game automatically banks your winnings only when no eligible uncertain choice remains.
Wallet and Balance Restoration
Your initial balance is set to 1000 play coins. You can select stakes of 10, 20, 50, or 100 coins, with 20 being the default. If your balance drops below 10 coins while idle, you can manually restore it. This restoration sets your balance back to 1000 coins. It is not automatic and does not add the reset amount to an existing balance; it replaces the current balance. Your saved wallet balance persists in your browser's local storage.
Fractional Carry and Settlement
When you settle a round, the game calculates the floor of your raw gross return plus any stored fractional carry. The remainder of that calculation persists as fractional carry. This carry is stored in your browser's local storage and survives page reloads and balance refills. If a round ends with zero return, your fractional carry remains unchanged. This ensures that small fractional values are not lost during settlement.
Unfinished Rounds and Reloading
If you reload the page while a round is active, your captured stake remains deducted from your balance. The unfinished round ends without any refund, payout, or continuation. You cannot resume the exact state of that round. Your controls will reset to the default stake of 20 coins, and the first preset is restored. During an active round, stake, hazard-count, and refill controls are locked. Eligible cell choices and collection remain available according to the game rules.
Audience and Responsible Use
This demo has an intended audience of users aged 18 and older. This is a guideline for the demo's design and not a universal legal age gate. There is no enforced timer, self-exclusion, or account blocking. You are responsible for monitoring your own time and virtual coin usage. If you wish to take a break, you can simply close the browser tab. The game caps and resets are mechanics to manage the simulation, not guarantees of safe behavior.
Frequently asked questions
Can I win real money from this demo?
No. The virtual coins used in this demo have no cash value. They cannot be exchanged for real money, withdrawn, or used in external payment systems. The game is purely for entertainment and demonstration purposes.
What happens to my balance if I refresh the page?
If you refresh while a round is active, your captured stake remains deducted. The round ends without refund or payout. Your saved balance and fractional carry persist in your browser's local storage, but the unfinished round does not resume. You will need to start a new round.
How does the automatic bank work?
The game automatically banks your winnings only when no eligible uncertain choice remains. You can also manually collect after at least one safe reveal. Choices are disabled if their gross return exceeds 1000 times the stake, but equality is allowed.
