1win Mines Calculator
Model the 1win 5x5 version with its 2, 3, 5 and 7 bomb options, a 94% RTP estimate and multipliers rounded down to two decimal places. The calculator shows survival probability, game-style multipliers, effective RTP and conditional cash-out payout.
Calculate 1win multipliers rounded down to two decimal places
Choose the bet, bomb count and safe-pick target. The calculator applies the 94% setting, rounds the multiplier down to two decimal places and shows the effective RTP produced by the displayed value.
Fair multiplier = 1 / P
Displayed multiplier = Fair × 0.94, rounded down to 2 decimals
Interactive 94% RTP multiplier table
Choose the bet, bombs and safe picks to compare survival chance, multipliers rounded down to two decimal places, effective RTP, cash-out payout and profit.
With 3 mines and 5 safe picks, the survival chance is 49.57%. At a nominal 94% RTP, the cash-out multiplier is 1.89x; a 10.00-unit bet would return 18.90 if you cash out after 5 safe picks. Effective RTP at this cash-out point is 93.68%, with EV of -0.0632 per unit.
The calculator applies the 94% setting and rounds displayed multipliers down to two decimal places. The currency maximum-win limit is not applied automatically; compare the calculated payout with the current live cap.
| Safe picks | Survival | Bust risk | Fair mult. | Est. mult. | Effective RTP | EV / unit | Cash-out payout | Profit |
|---|---|---|---|---|---|---|---|---|
| 1 | 88.00% | 12.00% | 1.1364x | 1.06x | 93.28% | -0.0672 | 10.60 | 0.60 |
| 2 | 77.00% | 23.00% | 1.2987x | 1.22x | 93.94% | -0.0606 | 12.20 | 2.20 |
| 3 | 66.96% | 33.04% | 1.4935x | 1.40x | 93.74% | -0.0626 | 14.00 | 4.00 |
| 4 | 57.83% | 42.17% | 1.7293x | 1.62x | 93.68% | -0.0632 | 16.20 | 6.20 |
| 5 | 49.57% | 50.43% | 2.0175x | 1.89x | 93.68% | -0.0632 | 18.90 | 8.90 |
| 6 | 42.13% | 57.87% | 2.3736x | 2.23x | 93.95% | -0.0605 | 22.30 | 12.30 |
| 7 | 35.48% | 64.52% | 2.8186x | 2.64x | 93.66% | -0.0634 | 26.40 | 16.40 |
| 8 | 29.57% | 70.43% | 3.3824x | 3.17x | 93.72% | -0.0628 | 31.70 | 21.70 |
| 9 | 24.35% | 75.65% | 4.1071x | 3.86x | 93.98% | -0.0602 | 38.60 | 28.60 |
| 10 | 19.78% | 80.22% | 5.0549x | 4.75x | 93.97% | -0.0603 | 47.50 | 37.50 |
| 11 | 15.83% | 84.17% | 6.3187x | 5.93x | 93.85% | -0.0615 | 59.30 | 49.30 |
| 12 | 12.43% | 87.57% | 8.0420x | 7.55x | 93.88% | -0.0612 | 75.50 | 65.50 |
| 13 | 9.565% | 90.43% | 10.455x | 9.82x | 93.93% | -0.0607 | 98.20 | 88.20 |
| 14 | 7.174% | 92.83% | 13.939x | 13.10x | 93.98% | -0.0602 | 131.00 | 121.00 |
| 15 | 5.217% | 94.78% | 19.167x | 18.01x | 93.97% | -0.0603 | 180.10 | 170.10 |
| 16 | 3.652% | 96.35% | 27.381x | 25.73x | 93.97% | -0.0603 | 257.30 | 247.30 |
| 17 | 2.435% | 97.57% | 41.071x | 38.60x | 93.98% | -0.0602 | 386.00 | 376.00 |
| 18 | 1.522% | 98.48% | 65.714x | 61.77x | 94.00% | -0.0600 | 617.70 | 607.70 |
| 19 | 0.8696% | 99.13% | 115.00x | 108.10x | 94.00% | -0.0600 | 1,081.00 | 1,071.00 |
| 20 | 0.4348% | 99.57% | 230.00x | 216.20x | 94.00% | -0.0600 | 2,162.00 | 2,152.00 |
| 21 | 0.1739% | 99.83% | 575.00x | 540.50x | 94.00% | -0.0600 | 5,405.00 | 5,395.00 |
| 22 | 0.0435% | 99.96% | 2,300.0x | 2,162.00x | 94.00% | -0.0600 | 21,620.00 | 21,610.00 |
The table updates when you change the mine count, bet amount or RTP setting.
How downward rounding changes the effective RTP
The base RTP setting is 94%, but each displayed multiplier is rounded down to two decimal places. That makes the effective RTP vary slightly by cash-out row.
1 safe pick
Survival is 88.00%. Fair × 0.94 equals 1.0682x, but the displayed value is 1.06x. Effective RTP is 93.28%, and a 10-unit cash-out would return 10.60.
5 safe picks
Survival is 49.57%. The 94% value before display rounding is 1.8965x, while the displayed value is 1.89x. Effective RTP is 93.68%, and a 10-unit cash-out would return 18.90.
11 safe picks
Survival is 15.83%. The value before display rounding is 5.9396x, while the displayed value is 5.93x. Effective RTP is 93.85%, and a 10-unit cash-out would return 59.30.
Check the live Mines table on 1win
This page models the 94% RTP estimate with the same downward two-decimal rounding seen in the checked interface values. Before playing, open the live multiplier strip and confirm it still matches — the verification method is published below, so the check takes a minute.
How the 94% RTP estimate was checked
The interface sample used for this page contains eleven displayed multipliers at 3 bombs. Each value can be compared with the fair multiplier for the same safe-pick row to find which RTP and display rule reproduce the strip.
Eleven values, one rule
All eleven checked values at 3 bombs — from 1.06x at one pick to 5.93x at eleven — match fair multiplier × 0.94, rounded down to two decimal places.
Alternatives ruled out
Within this eleven-row sample, 93%, 95% and 96% do not reproduce the complete strip. The effective returns produced by the 94% setting with downward two-decimal rounding range from 93.28% to 93.98%.
Values are rounded down
The interface drops all digits after the second decimal instead of rounding to the nearest value. Effective RTP is therefore row-specific and never exceeds the base 94% setting.
How the 1win version differs
Only four bomb settings
The selector offers four fixed settings, from 2 up to 7 bombs — no single-bomb low-volatility mode and none of the extreme 10–24 bomb setups found in other builds. The risk range is deliberately narrow.
Lower RTP than most versions
At the inferred 94% setting, the stated return is below the 96%, 97% and 99% reference models used on the comparison pages. Rounding each multiplier down lowers the effective return slightly further on individual rows.
A currency cap, not a multiplier cap
The stated win limit is a currency amount, so the effective multiplier ceiling equals $50,000,000 divided by the bet. Whether the cap matters therefore depends on both the selected row and stake size.
| Version | RTP used on MinesCalc | Mine / bomb range |
|---|---|---|
| 1win in-house | 94% (inferred from interface values) | 2 / 3 / 5 / 7 |
| Roobet | 96% | 1–24 |
| Spribe (provider) | 97% | 1–20 |
| Stake in-house | 99% | 1–24 |
| BC.Game titles | Title-specific / custom | Varies by title |
| Duel | 100% within applicable limits | 1–24 |
How the $50,000,000 currency cap changes the multiplier ceiling
The maximum payable multiplier is not fixed. It equals the current currency win cap divided by the bet amount. The calculator does not apply this cap automatically, so compare its conditional payout with the current live limit.
10-unit bet
A $50,000,000 cap implies a 5,000,000x multiplier ceiling. Even the calculated full-clear value for 7 bombs, about 451,858x, remains below that ceiling.
1,000-unit bet
The same currency cap becomes a 50,000x ceiling. A full 5-bomb clear is about 49,942.20x and sits just below it, while a full 7-bomb clear would exceed it.
1,000,000-unit bet
The effective ceiling falls to 50x. Many deeper cash-out rows would then be limited even though their probability and uncapped fair value remain unchanged.
Provably fair in the 1win version
Commitment before reveal
The rules used for this page describe a server-side round commitment that can be checked after the result is revealed. Use the current in-game verifier and published instructions, because the exact verification flow can change.
Verification looks backward
The scheme lets you confirm a finished round was not altered mid-play. It does not leak anything about boards that have not been played — the general mechanics are covered on the Provably Fair Mines page.
Related Mines tools
These pages use the same 25-tile probability model with different settings and views.
Other Mines versions
Each page applies its version settings to the same 25-tile probability model.
FAQ
What RTP does 1win Mines use?
The 94% estimate comes from the eleven-row 3-bomb multiplier strip used for this page. Each checked value equals the fair multiplier multiplied by 0.94 and rounded down to two decimal places.
How many bombs can be set in the 1win version?
Four options: 2, 3, 5 or 7 bombs on a fixed 5x5 board. Other builds usually allow anywhere from 1 to 24.
Why is the game multiplier lower than the fair value in the calculator?
Two effects stack: the 94% return setting and downward rounding to two decimals. For example, five safe picks at 3 bombs have a fair price of 2.0175x, while the game shows 1.89x.
What is the maximum win?
The page uses a $50,000,000 currency cap and a $0.10–$1,000,000 bet range. The effective multiplier ceiling equals the currency cap divided by the bet, so it falls as the stake increases.
Is the game provably fair?
The version commits a hash of the round layout at the start and reveals the salt in bet history afterwards, so completed rounds can be verified. Verification confirms the past; it cannot predict future boards.
Why do estimates here differ from the Stake or Spribe pages?
Different settings: this page models 94% with multipliers rounded down to two decimal places and a 2/3/5/7 bomb selector, while other pages apply 99% or 97% with wider mine ranges. Identical targets therefore price differently on each page.