Calculated odds
Mines: probability of each tile and fair multiplier
Choose the number of mines: here is the probability of revealing each safe tile in a row, the multiplier that would be fair and what the game really pays.
In short
With 3 mines among 25 tiles, the first tile revealed is safe 88.0% of the time.
Revealing 5 safe tiles in a row with 3 mines: 49.57%, or one chance in 2.0.
Fair multiplier after 5 tiles: x2.02; with an RTP of 97.0%, the game pays x1.96.
Every figure is calculated by DropCashCasino from the rules of the game; none is copied.
Safe tiles in a row with 3 mines
| Tiles revealed | Probability | 1 in | Fair multiplier | Multiplier with an RTP of 97.0% |
|---|---|---|---|---|
| 1 | 88.00% | 1.1 | x1.14 | x1.10 |
| 2 | 77.00% | 1.3 | x1.30 | x1.26 |
| 3 | 66.96% | 1.5 | x1.49 | x1.45 |
| 4 | 57.83% | 1.7 | x1.73 | x1.68 |
| 5 | 49.57% | 2.0 | x2.02 | x1.96 |
| 6 | 42.13% | 2.4 | x2.37 | x2.30 |
| 7 | 35.48% | 2.8 | x2.82 | x2.73 |
| 8 | 29.57% | 3.4 | x3.38 | x3.28 |
| 9 | 24.35% | 4.1 | x4.11 | x3.98 |
| 10 | 19.78% | 5.1 | x5.05 | x4.90 |
| 11 | 15.83% | 6.3 | x6.32 | x6.13 |
| 12 | 12.43% | 8.0 | x8.04 | x7.80 |
25-tile grid. Probability of k safe tiles: C(25 − m, k) ÷ C(25, k). The real multiplier depends on the RTP stated by the game.
The calculation
The grid has 25 tiles. With m mines, the first tile revealed is safe with a probability of (25 − m) ÷ 25, the second (24 − m) ÷ 24, and so on: the probabilities multiply. With 3 mines, revealing 5 safe tiles in a row happens only about once in two.
Fair multiplier and paid multiplier
A fair multiplier would return exactly the bet on average: it is the inverse of the probability of revealing all those tiles without hitting a mine. The game pays that multiplier multiplied by its RTP; the difference is the house edge.
Cashing out early or late changes nothing on average
Cashing out after one tile or after ten gives the same average return: the RTP. More mines or more tiles revealed only make wins rarer and bigger. No tile is “safer” than another: each draw places the mines at random.
Play responsibly
Each round is played in a few seconds. Set a budget and a time limit before you play, and stop when the limit is reached. If gambling is no longer fun, see the responsible gambling page: it lists helplines for each country.
