Mines RTP & House Edge: What They Mean for Your Payouts

RTP and house edge are two sides of one coin

The house edge is the slice the operator keeps on average. RTP is what flows back to players. They always add up to 100%:

RTP = 100% − house edge

SatoshiMines uses a flat 1% house edge, so the RTP is 99%. For every 1 BTC wagered across many rounds, roughly 0.99 BTC is returned to players on average and 0.01 BTC is the edge. That average is a long-run figure — any single session can land well above or well below it.

How RTP shows up in the multiplier

In Mines, the payout multiplier is the fair multiplier — the exact reciprocal of your chance of getting that far — reduced by the house edge:

payout multiplier = (1 − 0.01) × (1 ÷ win probability)

Because the multiplier is the reciprocal of the odds, the expected return of every round works out to the same 99%. Worked example with 3 mines, cashing out after 1 safe tile:

• Win probability = 22 ÷ 25 = 88% (22 safe tiles out of 25).
• Fair multiplier = 25 ÷ 22 = 1.1364×.
• Payout multiplier = 0.99 × 1.1364 = 1.125×.
• Expected return = 0.88 × 1.125 = 0.99 → a 99% RTP, i.e. a 1% edge.

You can reproduce any of these figures in the Mines calculator, and the multiplier explainer walks through the formula in full.

Does the mine count change the RTP?

No — and this surprises people. Whether you play 1 mine or 24, the RTP stays at 99%, because the multiplier always scales as the reciprocal of your win probability with the same flat edge applied. What changes with mine count is variance: low mine counts pay small and often, high mine counts pay big but rarely. The long-run return is identical. Our guide to the best number of mines to pick covers that risk dial.

Why “Stake Mines RTP” or “Roobet Mines RTP” figures differ

The 5×5 Mines maths is identical everywhere, so the only thing that moves the RTP between sites is the house edge each operator chooses. Some advertise around 99%; others quietly run a larger edge, which means a lower RTP and slightly smaller multipliers for the same odds. The catch is verification: most casinos don’t expose the edge per round, so you’re trusting the marketing number. We don’t assert any competitor’s exact edge here because it isn’t publicly verifiable — what we can say is that SatoshiMines’s edge is a flat, published 1%.

To compare multipliers for any site, use the Stake, Roobet or all-sites Mines calculator — the odds are the same; only the edge differs.

Related reading

• Is the Mines Game Rigged? How Provably Fair Mines Works

  Is Mines rigged? A provably fair round can't be manipulated mid-game — but there's a 1% edge. Here's how to tell the difference and verify fairness.

• Mines Multiplier Chart: Payouts for Every Mine Count

  See what every mine count pays at a glance — a full Mines multiplier chart for 1, 3 and 5 safe tiles across all 24 mine counts.

• Mines Game Odds & Probability, Explained

  Mines odds come from one simple rule. Here's the probability behind every pick, with worked examples and a full odds table by mine count.