GAME GUIDE · MINES
How Mines Works: Survival Probability, Mine Count and 99% RTP
Vault Mines is a 25-tile finite-pool risk game. Practice remains the default public entry today, while LINBEI also has a mathematically certified server-authoritative Mines runtime behind staged Wallet rollout.
- Board
- 25 tiles
- Mines
- 1–24
- RTP
- 99.00%
- Runtime
- Practice default / Staged server
How to play
- Choose between 1 and 24 mines and start a round. Mine positions are fixed at round creation.
- Reveal a tile. A gem increases the safe count and updates the next-tile probability and multiplier; a mine ends the round.
- After at least one gem you can cash out using the practice multiplier for the current state.
- More mines generally raise next-tile risk and also make multipliers grow faster after successful reveals.
Mines canonical math
With m mines, surviving k safe reveals is the product of successive conditional safe probabilities. The reviewed server model uses M(k) = 0.99 ÷ P(survive k) and has been certified at 99% theoretical RTP across reviewed reachable cash-out states. Practice presentation does not override that server contract.
| 3 mines · first pick | 22 / 25 safe | 88.00% | 1.125× |
| 5 mines · first pick | 20 / 25 safe | 80.00% | 1.2375× |
| 10 mines · first pick | 15 / 25 safe | 60.00% | 1.650× |
Current fairness boundary
The public page may still expose Practice, but Transaction Core already has an authoritative Mines round/action runtime with HMAC-SHA256 board commitment/reveal, Wallet/Ledger settlement, idempotency and recovery. The server rules exist; broad Public Wallet exposure remains staged.
Frequently asked questions
Are mines reshuffled every time I click a tile?
No. In this Practice model, the mine board is built once when the round starts and remains fixed during the round.
Does probability change after revealing a gem?
Yes. This is sampling without replacement, so the number of safe tiles and unrevealed tiles changes after each safe reveal.
Is 99% the canonical Mines RTP?
Yes for the reviewed server math. Broad Public Wallet rollout is still staged, so ordinary players may still see Practice as the default mode.
Is choosing more mines always better?
No. More mines usually increase variance and multiplier growth while also increasing bust risk. A larger multiplier is not a larger expected value.