Since this is an unofficial site, always verify current terms, currency support, and payment methods like GCash or Maya directly with the operator. Check if f61 is regulated by PAGCOR before playing with real funds.
Four mines and 370 legal boards
The board has four rows, four columns and exactly four mines. Number columns from zero on the left. Columns 0 and 2 must have the same parity of mine count and different counts; columns 1 and 3 must have the same parity, but their counts may be equal. Matching parity allows two odd counts as well as two even counts. There are 370 legal boards. One is sampled uniformly when a round starts and remains fixed throughout that round.
What Philippine Players Should Check Before Playing
While the demo uses virtual coins, real-money play may involve Philippine pesos (PHP). Always confirm the supported currency on the official f61 site. For deposits, players commonly use GCash and Maya, but availability depends on the operator’s current setup. Check the banking page or contact support to see if these wallets are accepted.
Regulatory safety is key. Verify if f61 holds a valid license from the Philippine Amusement and Gaming Corporation (PAGCOR) or another recognized authority. Look for the license number in the footer or terms section. Also, ensure the site uses SSL encryption and has clear responsible gambling tools.
- Confirm if GCash and Maya are supported for deposits.
- Check for PAGCOR regulation or other valid licenses.
- Verify SSL security and data protection policies.
- Review withdrawal limits and processing times.
Starting a round and using its controls
Choose a virtual stake of 10, 20, 50, 100 or 200; the initial selection is 20. Starting a round immediately deducts and saves the captured stake. Stake, mine setting and refill are locked during play. Covered eligible cells and the sound control remain available. The bank button becomes available after at least one safe reveal. There is no automatic queue of rounds and no selectable mine count other than four.
Gross quote and a worked example
After a safe reveal, the game retains only boards consistent with all safe cells revealed so far. Gross quote = 0.96 × captured stake × 370 / remaining compatible boards. Gross includes the stake; net change is gross minus the stake. A mine pays zero gross. Revealing the top-left cell first and finding it safe leaves 269 compatible boards, so the quote is about 1.3204× stake.
Banking and automatic settlement
You can bank manually after the first safe reveal. Revealing all twelve safe cells or having no eligible reveal remaining banks the current quote automatically. Proven mines and previously revealed cells are unavailable. An individual move whose prospective quote would exceed 1,000× stake is disabled. With this particular 370-board support, however, the maximum reachable quote is 355.2× stake, so the 1,000× guard is never reached.
Integer wallet and fractional carry
The initial virtual balance is 1,000. At settlement, the game adds any previously saved fractional carry to the gross quote, pays the integer part into the wallet and saves the remaining fraction separately. Carry is a payout remainder, not a fee or fractional wallet balance. While idle with a balance below 10, manual refill sets the integer wallet to exactly 1,000 and preserves carry. Refill is not available during an active round.
Expected return and saved simulation evidence
The exact expected gross return is 96% of the captured stake under the uniform legal-board model. It is neither a win probability nor a guarantee for an individual round or session. Six offline reveal-and-stop paths have 20 million saved simulated rounds in total: five paths have one million each and the final path has fifteen million. Their measured gross returns range from 95.7856% to 96.0889%. These sample paths are not six selectable game modes.
Frequently asked questions
How many mines and stakes are available?
Exactly four mines are available. Stakes are 10, 20, 50, 100 and 200 virtual coins.
What happens if I reload during a round?
The round cannot resume and the stake deducted at its start is not refunded. The reduced integer wallet and fractional carry remain saved locally.
When can I refill?
While idle with a balance below 10, manual refill sets the integer wallet to 1,000 and preserves fractional payout carry.
How is the quote calculated?
Gross quote = 0.96 × stake × 370 / remaining compatible boards. A mine returns zero.
When is manual banking available?
After at least one safe reveal in the active round.
When does banking happen automatically?
After all twelve safe cells are revealed or no eligible reveal remains.
Is 96% a win probability?
No. It is the expected gross return, including the stake, and does not guarantee a particular round or session result.
Can the quote reach 1,000× stake?
Not with the current support: its maximum reachable quote is 355.2× stake.
What is fractional carry?
It is the separate fractional remainder after an integer payout, saved for a later settlement. It is not a fee.
Can virtual coins be withdrawn?
No. These demo coins have no cash value or payment flow.
Do I need an app or account?
No. This is a browser demo with no installer, account registration or sign-in.
Does localStorage prove anonymity?
No. Local storage alone does not establish anonymity or an absence of other processing.
Is the four-mine demo free for players in the Philippines?
Yes, the demo uses virtual coins and is free to play. It does not require a deposit or real money. However, this is an unofficial demo site, so check the main f61 platform for real-money game availability.
Do I need GCash or Maya to play the demo?
No, the demo uses virtual currency. GCash and Maya are typically used for real-money deposits and withdrawals. Check the operator’s banking page to confirm if these payment methods are currently supported for real play.
