Rules
Mines by Spribe uses a grid of 25 tiles. Before the round you choose how many mines are hidden — anywhere from 1 to 24 — and place your bet. Each tile you open that hides a star increases your multiplier. You can cash out after any safe tile. Hit a mine and the bet is lost.
More mines means bigger multipliers for each safe tile, but a much higher chance of hitting a mine early.
How the risk scales
- With 1 mine, the first tile is safe 24 times out of 25 — but the multiplier grows very slowly.
- With 3 mines (a common default), the first tile is safe 22 times out of 25.
- With 20+ mines, even one safe tile is unlikely, but it pays a large multiplier.
- Whatever you pick, the multipliers are set so the 3% house edge stays the same.
Fairness
Mines is provably fair: mine positions are fixed by a seed before you start, and you can check the hash afterwards to confirm the layout was not changed during the round. The published RTP is 97%.
Different settings, same odds
Mines can look like it has easy and hard modes, but the maths treats them evenly. Compare two choices that feel very different:
- 1 mine, open 10 tiles: you survive 60% of the time, and the fair multiplier at 97% RTP is about 1.62x.
- 5 mines, open 2 tiles: you survive about 63.3% of the time, for a multiplier of about 1.53x.
- In both cases the multiplier is set so that the 3% house edge stays the same. Choosing more mines or fewer tiles only changes how quickly a round is over, not your long-run return.
Odds of opening safe tiles
Your chance of opening several safe tiles in a row depends only on how many mines are hidden. Exact figures for the 25-tile grid:
| Mines | Open 1 | Open 2 | Open 3 | Open 5 | Open 10 |
|---|---|---|---|---|---|
| 1 | 96% | 92% | 88% | 80% | 60% |
| 3 | 88% | 77% | 67% | 49.6% | 19.8% |
| 5 | 80% | 63.3% | 49.6% | 29.2% | 5.65% |
| 10 | 60% | 35% | 19.8% | 5.65% | 0.0919% |
| 20 | 20% | 3.33% | 0.43% | 0.0019% | — |
Each multiplier is set at about 97% divided by the chance of getting there, so the house edge is the same whichever option you pick.
Check your own numbers
- Chance to open them all
- —
- Multiplier at 97% RTP
- —
Key facts
| Provider | Spribe |
|---|---|
| Type | Instant game |
| Grid | 5×5 (25 tiles) |
| Mines | 1–24, chosen by player |
| RTP | 97% |
| Provably fair | Yes |
Casinos can choose between several RTP versions of a game. The exact figure is shown in the game's info panel.
Questions
Is there a pattern to where mines are?
No. Mine positions are random for every round. Patterns and "safe tile" tricks don't work.
How many mines should I choose?
It only changes the risk profile, not your expected return. Fewer mines means smaller, more frequent wins; more mines means rarer, bigger ones.
Can I cash out at any time?
Yes, after any safe tile you can take your current multiplier.
Is 1 mine the safest setting?
It gives the highest chance per tile, but the multiplier grows very slowly. Over many rounds every setting returns about the same 97%.