Audit data log
90-day cycle| Metric | Value | Source | Verified |
|---|---|---|---|
| Verified RTP | 99% | Stake fairness page | match |
| Max multiplier | - | Trust file | - |
| House edge | 1% | Computed (100 − RTP) | derived |
| Min bet | - | Operator cashier | - |
| Max bet | - | Operator cashier | - |
| Audit cycle | Q2 2026 | This site | current |
FIELD MAP . sections
The Stake mines build is the canonical 5x5 grid press-your-luck game with configurable mine count from the brand that defined the 99 percent cluster baseline. Stake launched in 2017 under Medium Rare N.V. operating entity and Curaçao eGaming licence; the mines implementation is the second-most-replicated Original after Crash in the audit set. Verified per-game RTP is 99 percent (1 percent house edge), audited 2026, with reveal-by-reveal cash-out math identical to cross-brand grid plays.
If you have read the cross-brand grid-reveal math at the grid optimal-strategy walkthrough, the reveal-by-reveal cash-out framework is familiar; this page is the Stake-specific reproduction.
- The verified fairness layer at the Stake grid (HMAC-SHA256 reproduces correctly across our cycle sample).
- The Stake Mines verification routine replicable in 15 minutes on any laptop.
- The Stake mines rtp at verified 99 percent.
- Why Stake mines is the reference build of the 5x5 press-your-luck mechanic.
- Mine-count configuration depth across the 1-24 range.
- Where Stake mines sits as cluster baseline across the audit set.
What is verified, what is pending at the grid
We open with the honest data state. Verification firm on cluster baseline.
| Fact | Status | Source |
|---|---|---|
| Fairness method = HMAC-SHA256 | Verified | Stake published implementation docs |
| Server-seed commit-reveal workflow | Verified | First-hand reproduction at Stake |
| Game type = 5x5 grid press-your-luck | Verified | Stake brand-published game info |
| Casino licence (Curaçao eGaming) | Verified | Stake site footer plus Curaçao registry |
| Brand (Medium Rare N.V., Curaçao-incorporated, since 2017, audited 2026) | Verified | Stake terms plus cross-reference |
| Stake mines rtp = 99 percent (1 percent house edge) | Verified | Stake publishes per-game RTP |
| Mine-count range (1-24) | Verified standard | Stake game info screen |
| Cash-out per-reveal incremental multiplier | Verified | First-hand reproduction at multiple mine counts |
| Auto-cashout configurable per-reveal | Verified | Stake UI |
| Instant crypto withdrawals (~3 minutes) | Verified | Stake cashier docs plus first-hand observation |
| Threshold-based KYC | Verified | Stake terms |
| VIP Stake Reload (scales with tier) | Verified | Stake VIP screen |
| No welcome bonus (deliberate brand stance) | Verified | Stake terms |
| Maximum payout cap at deep mine + deep reveal combinations | Pending verification | Standard catalogue-wide limits expected |
The Stake mines fairness side is verified plus the 99 percent RTP is verified as cluster baseline.
Why mines is the reference implementation
The 5x5 grid press-your-luck Mines mechanic is the second-most-replicated Original in the crypto-casino category:
- 2017 launch: Stake codified provably-fair 5x5 grid press-your-luck alongside Crash, Dice, and Plinko. Every cross-brand operator launched mines with reference to Stake's published Fisher-Yates permutation derivation.
- Identical permutation math cross-brand: the Fisher-Yates derivation onto the 25-cell grid using HMAC-SHA256 byte stream is structurally identical across operators. What varies is the house-edge factor in the multiplier table.
- Stake-alumni team operators: Shuffle Mines uses the same scheme directly.
- Per-reveal cash-out workflow: the click-cell → reveal → continue-or-cashout flow with incremental multiplier display is Stake's UX convention competitors replicate.
- Real-time hash display: Stake's fairness UI displays the SHA-256 commitment before each session. Cross-brand standard.
- What this means for players: Stake mines is structurally equivalent to Shuffle mines and the 99 percent cluster. Brand differentiators are operational track record, VIP depth, withdrawal speed, and presence/absence of token rakeback.
Press-your-luck grid math at verified 99% RTP
The Stake mines build runs the canonical 5x5 grid press-your-luck mechanic at the verified 99 percent RTP target:
- 5x5 grid equals 25 cells total. Player chooses M = mine count (1 to 24); the rest 25-M are safe (gem) cells.
- Per safe reveal, the cash-out multiplier increments. At m mines and r safe reveals, the multiplier equals 0.99 × C(25,r) / C(25-m,r). The 0.99 factor encodes the 1 percent house edge.
- At 5 mines: first safe reveal multiplier approximately 1.24x; fifth safe reveal approximately 2.37x; tenth approximately 5.10x; full 20-reveal clear approximately 30x.
- At 10 mines: first safe approximately 1.65x; fifth approximately 9.10x; full 15-reveal clear approximately 30,000x cross-brand standard.
- Cashing out before a mine returns the current multiplier; hitting a mine returns nothing.
- The 99 percent figure is verified per Stake's published documentation and reproduced in our HMAC replay sample.
The Stake grid press-your-luck mechanic is the reference Mines. The HMAC-Fisher-Yates derivation is the published cross-brand reference.
Provably fair on the Stake grid: the verification routine
The per-grid fairness verification works the standard way at Stake:
- Open the Stake Mines fairness panel and copy the published server-seed hash before placing a bet.
- Place a sample of 20-50 grid sessions at a consistent mine-count configuration (for instance 5 mines). Record per-session inputs: client seed, nonce, recorded mine positions, recorded safe-reveal multipliers.
- After the sample: rotate the server seed in the Stake account settings. Stake reveals the raw seed.
- Run SHA-256 locally on the revealed seed. Result must match the captured commitment.
- For each session in the sample: run HMAC-SHA256 over (revealed seed, client seed, nonce, cursor). Apply Stake's published Fisher-Yates derivation onto the 25-cell permutation; the first M positions are mines.
- Confirm the reproduced mine positions match the recorded positions on every session.
In our cycle reproduction on Stake, the HMAC-replay flow worked correctly on every sampled grid session.
Stake mines rtp at verified 99%: cluster baseline reference
- Verified 99 percent RTP (1 percent house edge) per Stake documentation. Cluster baseline.
- Duel mines at verified 99.9 percent (audit-set leader on raw RTP, 0.9 percent above Stake).
- Rollbit Mines at 99.5 percent (0.5 percent above Stake), plus RLB token rakeback overlay.
- BetFury mines at 99.28 percent, plus BFG dividend yield.
- Standard 99 percent cluster: Stake, Shuffle, Yeet mines, Winna mines, Gamdom mines, Roobet mines (expected 96-98 percent).
- Fairspin TFS mines: 97 percent expected.
Mine-count configuration depth at Stake Mines
- 1 mine: safest setting. First reveal approximately 1.04x; full 24-clear approximately 24x. Variance: low.
- 3 mines: common mid-low setting. First reveal approximately 1.14x; full 22-clear approximately 200x. Variance: medium-low.
- 5 mines: balanced setting. First reveal approximately 1.24x; full 20-clear approximately 30x. Variance: medium.
- 10 mines: aggressive setting. First reveal approximately 1.65x; five-reveal approximately 9.10x. Variance: medium-high.
- 15 mines: lottery-shape setting. First reveal approximately 2.5x; three-reveal approximately 9x. Variance: high.
- 24 mines: maximum variance. Single safe reveal approximately 24.75x; everything-or-nothing. Variance: extreme.
- All configurations target 99 percent RTP. Mine count amplifies variance without changing RTP.
- Optimal-reveal strategy at any mine count: there is no positive-EV cash-out point at 1 percent house edge; bankroll-survival math dominates.
Where Stake Mines sits across the audit set
| Brand | Mines RTP | Notable feature | Catalogue position |
|---|---|---|---|
| Duel | 99.9 percent (verified) | 0 percent house edge target | Audit-set leader on raw RTP |
| Rollbit | 99.5 percent | RLB token rakeback overlay | Second on raw RTP |
| Betfury | 99.28 percent | BFG dividend token | Third on raw RTP |
| Stake | 99 percent (verified) | Industry pioneer, reference implementation, deepest VIP track | Cluster baseline reference |
| Shuffle / Yeet / Winna / Gamdom | Cluster at 99 percent | Standard 5x5 grid press-your-luck | Standard cluster |
| Roobet | Expected 96-98 percent | 20% first-week cashback | Anti-leader cluster on undisclosed RTP |
| Fairspin TFS | 97 percent expected | On-chain TRC-20 + TFS token | Lower raw RTP |
Bankroll fit for Stake Mines per player profile
- Reference-implementation-trust player: Stake's HMAC implementation is the published reference for the Fisher-Yates permutation derivation.
- Long-term VIP-grind player: Stake's deep VIP ladder applies tier-scaled rakeback-equivalent compensation.
- Conservative grinder: 1-3 mine configurations at low bet size produce slow erosion at cluster-baseline edge.
- Press-your-luck aggressive player: 10-15 mine configurations at small bet size produce high-variance shape; standard cluster math.
- Lottery-shape player: 24-mine all-or-nothing at 99 percent target, competitive lottery configuration.
- EV-maximising raw-RTP player: Stake is NOT the choice. Duel mines at 99.9 percent leads on raw RTP.
- Token-rakeback-yield player: Stake has no native token.
- Welcome-bonus-chaser: Stake is NOT the choice. No welcome bonus by design.
How Stake Mines compares to other Stake originals
- Stake Mines: the verified 99 percent RTP 5x5 grid press-your-luck reference. This page.
- Stake Plinko: the verified 99 percent RTP binomial bucket-drop (1000x max); see the binomial bucket-drop teardown.
- Stake Crash: the verified 99 percent RTP reciprocal multiplier curve; see the reciprocal-curve teardown.
- Stake Dice: the verified 99 percent RTP threshold pick; see the threshold-pick teardown.
- Stake Limbo: the verified 99 percent RTP target multiplier (1,000,000x max); see the target-multiplier teardown.
- Stake HiLo: the verified 99 percent RTP card-sequence pick; see the card-sequence teardown.
- Stake Dragon Tower: the verified 99 percent RTP tile climb; see the tile-climb teardown.
- Stake Slide: the slider-multiplier mechanic; see the slider-multiplier teardown.
- Stake Scarab Spin: the Egyptian-themed slot-style original; see the slot-style teardown.
- Stake Keno: the number-pick lottery; see the number-pick lottery teardown.
- Stake Wheel: the wheel-spin segment pick; see the wheel-spin teardown.
- Stake Blue Samurai: the samurai-themed arcade-style original; see the arcade-style teardown.
- All 12 share the HMAC-SHA256 fairness primitive.
Platform context behind this Stake Mines audit
- Launched: 2017 (industry pioneer of crypto-originals category).
- Licence: Curaçao eGaming.
- Operator: Medium Rare N.V., Curaçao-incorporated.
- Deposit currencies: 22 cryptos.
- Withdrawal currencies: 12 cryptos.
- Minimum deposit: $1 USD-equivalent.
- Withdrawal speed: instant for crypto (~3 minutes).
- Game library: 4500 titles plus ~30 in-house Stake Originals.
- Live casino: yes (Evolution provider).
- Sports betting: yes.
- Bonuses: NO welcome bonus; VIP-tier Stake Reload; Bronze through Obsidian VIP ladder.
- Restrictions: threshold-based KYC.
- Affiliate disclosure: this site earns commission from registrations at Stake; the audit data is independent of commission status.
When the press-your-luck math meets the responsible-gambling line
- The verified fairness layer doesn't change the structural house edge. 1 percent house edge produces $1 expected loss per $100 wagered.
- Press-your-luck framing exploits sunk-cost cognition: after 5 successful reveals at high mine count, the temptation to keep going is psychologically strong despite worsening conditional odds.
- 24-mine single-reveal at edge buckets is a lottery-shape distribution.
- VIP-tier-progression incentive may encourage higher session volume than baseline.
- If gambling has stopped being fun, neither operational track record nor VIP depth changes the situation. Free, confidential help: GamCare and BeGambleAware. Our player-protection limits page lists brand-side limits worth setting.
Frequently asked questions about Stake Mines
For the full brand context behind this audit, open the Stake brand overview).
What is the Stake grid in one sentence?
The Stake grid is the canonical 5x5 press-your-luck Mines mechanic at Stake, a 2017-launched Curaçao-licensed crypto-casino (industry pioneer), with verified 99 percent RTP, HMAC-SHA256 Fisher-Yates derivation as the published cross-brand reference, and no welcome bonus or token utility.
How does Stake Mines fairness work?
Stake uses HMAC-SHA256 fairness with operator-committed server seed, player-controlled client seed, per-session nonce, and cursor. The mine positions are derived via Fisher-Yates onto the 25-cell permutation; the first M positions are mines.
What is the verified Stake Mines rtp?
99 percent base (1 percent house edge), verified per Stake published documentation. Cluster baseline.
What is the optimal mine count to play?
There is no positive-EV mine count at 1 percent house edge. Optimal play is bankroll-driven: low mine counts (1-3) for slow erosion, high mine counts (15-24) for lottery-shape variance. Higher mine count does NOT improve RTP; it amplifies variance only.
What is the maximum multiplier on Stake Mines?
Maximum depends on mine count and reveal depth. At 24 mines, single safe reveal returns approximately 24.75x. At 10 mines + 15-reveal clear can reach approximately 30,000x cross-brand standard.
Stake Mines vs Duel Mines, what is different?
Both share canonical 5x5 grid mechanic, identical HMAC implementation. Duel mines at 99.9 percent RTP leads on raw figure; Stake mines at 99 percent is cluster baseline.
Stake Mines vs Roobet Mines, what is different?
Both share canonical mechanic. Stake at 99 percent verified; Roobet at expected 96-98 percent (undisclosed). Per $100 wagered, Stake returns $99 expected; Roobet returns approximately $97 expected.
Does VIP tier change Mines play?
At higher VIP tiers (Platinum-plus), the Stake Reload supplements the base 99 percent RTP. Effective return improves with tier progression.
Reading after this Mines teardown
- For the binomial bucket-drop reference, read the binomial bucket-drop teardown.
- For the reciprocal multiplier curve build, read the reciprocal-curve teardown.
- For the threshold pick build, read the threshold-pick teardown.
- For the 1,000,000x target multiplier, read the target-multiplier teardown.
- For the card-sequence pick, read the card-sequence teardown.
- For the tile climb with difficulty modes, read the tile-climb teardown.
- For the slider-multiplier mechanic, read the slider-multiplier teardown.
- For the Egyptian-themed slot-style original, read the slot-style teardown.
- For the number-pick lottery, read the number-pick lottery teardown.
- For the wheel-spin segment pick, read the wheel-spin teardown.
- For the samurai-themed arcade-style original, read the arcade-style teardown.
- For the cross-brand grid optimal-strategy walkthrough, read the grid optimal-strategy walkthrough.
- For our editorial methodology, see our editorial methodology page.
Authority sources cited in this Stake Mines review
- The Stake provably-fair implementation page is the published reference.
- The Curaçao eGaming registry confirms Stake's licensed status under Medium Rare N.V.
- GamCare and BeGambleAware provide independent player-protection guidance.
The editor on this Stake Mines review is Karssen Avelara. HMAC-SHA256 fairness verification reproduced locally against Stake's published documentation. The 99 percent RTP is verified. Maximum-multiplier figure at deep-mine deep-reveal configurations and current VIP-tier-specific Stake Reload percentages are pending operator clarification. Corrections: editor@casino-originals.com.
Karssen Avelara · editor@casino-originals.com