The basics
How mines works at crypto casinos
You play on a board of hidden tiles with gems and mines. Before the round you choose how many mines to hide, then open tiles one by one. Every gem raises your multiplier, and you can cash out whenever you like. Hit a mine and the round is over.
Most casinos use a 5×5 board of 25 tiles with 1 to 24 mines. Four casinos on our list also offer bigger boards of 36, 49 or 64 tiles, with up to 35, 48 or 63 mines: Rainbet, Roobet, Thrill and Rollbit.
Martin, from inside a crypto casino
A lot of players remember Minesweeper from the old Windows days, and I loved it myself. Mines works the same way, and what makes it fun is that you decide everything: how many mines, which tiles and when to cash out. So everyone plays it their own way.
RTP
Does the number of mines change mines RTP?
The multipliers are worked out from the odds. More mines mean bigger multipliers and rarer wins, and that’s all. Try it yourself:
Mines odds explorer Interactive
Exact odds from the board. A casino may round its multipliers slightly. The table below shows the same numbers for 3 mines.
Your odds with 3 mines on a 25-tile board
| Gems opened | Chance to get there | Payout at 99% RTP | Payout at 96% RTP |
|---|---|---|---|
| 1 | 88% | 1.12x | 1.09x |
| 2 | 77% | 1.29x | 1.25x |
| 3 | 67% | 1.48x | 1.43x |
| 4 | 58% | 1.71x | 1.66x |
| 5 | 50% | 2.00x | 1.94x |
| 6 | 42% | 2.35x | 2.28x |
| 8 | 30% | 3.35x | 3.25x |
| 10 | 20% | 5.00x | 4.85x |
| 12 | 12% | 7.96x | 7.72x |
| 15 | 5.2% | 18.98x | 18.40x |
Computed from the board, exact. The payouts are what a 99% or 96% game pays for that chance; a casino may round its multipliers slightly.
From the casino side
How players actually play mines
Martin, from inside a crypto casino
From what I see, most players pick a low share of mines, around 5–40% of the board, and go for lots of gems, cashing out often. I like to play that way too. Hitting gems often and cashing out again and again simply feels better than constantly running into mines. In gambling, the fun comes from winning.
Where a casino offers them, players especially like the 49- and 64-tile boards. They pick just a few mines, open gems one after another up to about 1.6x–3x and then cash out. Clearing that many gems in a row is fun, and every click comes with the same question: take one more gem, or cash out now?
Here’s what that looks like on the bigger boards (at 99% RTP):
49 tiles, 3 minesgems to open for each target
64 tiles, 3 minesgems to open for each target
64 tiles, 5 minesgems to open for each target
Where to find them
Bigger boards: where to find them
Only four casinos on our list offer boards beyond 25 tiles, and their mines RTP differs a lot:
We checked the 64-tile boards at all four, and each pays the same RTP as its 25-tile board.
If you like big boards, that makes Thrill the obvious place to play them: it’s the only one paying the full 99%.
The RTP gap
Why 96% matters more than it sounds
Martin, from inside a crypto casino
Many players assume every original pays more than slots, and few notice that mines at Rainbet and Roobet pays less. At 96%, it pays about what a typical online slot pays, and many slots pay more.
At a 99% casino every cash-out is bigger. With 3 mines and 5 gems opened:
The click is the same, but your win is smaller, and that repeats on every cash-out you make.
Do it in 10 seconds
How to check mines RTP yourself
Martin, from inside a crypto casino
The RTP is usually shown in the game itself, in the info or fairness panel, or in the description below the game on the casino’s page. If you can’t find it, ask live chat: they’ll tell you where to look or just give you the number.
There’s also a quick check anyone can do, no live chat needed:
RTP = payout for one gem ÷ number of tiles
- Set the most mines the board allows, so one gem is left
- Read what that one gem pays
- Divide it by the number of tiles
25 tiles, 24 mines: 24.75x = 99%25 tiles, 24 mines: 24.00x = 96%Thrill, 64 tiles, 63 mines: 63.36x = 99%
We did exactly this at Thrill: its 64-tile board pays 63.36x, so 99%.
We checked every casino in the game or with live chat. Each casino in the ranking shows the date we checked it.
Myth vs fact
Hot tiles, patterns and other mines myths
Martin, from inside a crypto casino
Some players pick tiles they think are “hot”, where lots of gems came up recently, or “cold” ones that just had mines and so supposedly won’t again. Others follow patterns: corners, lines, diagonals, the middle, or a shape they click through in order.
“This tile is hot: lots of gems came up here. That one just had a mine, so it won’t again.”
Every round is new. What came up before doesn’t change where the mines are now.
“Click the corners first”, or lines, diagonals, the middle, or a shape in order.
Every unopened tile has the same chance, whatever order you click in.
How provably fair settles it
Our picks
Where to play mines
Duelbits pays the most on mines, 99.44%, which makes it our pick. Eight more casinos pay the full 99%. Duel and Gamdom add zero edge on your first $50,000 and $5,000 of bets each day, and Thrill is the place for bigger boards at 99%.
Best for big boards
Thrill99%
The only casino paying 99% on 25 to 64 tiles.
Visit Thrill18+, T&Cs apply
For high volume
Duel99%, zero edge, first $50k a day
◎ Zero edge on your first $50,000 of bets a day.
Visit Duel18+, T&Cs apply
Compare every casino in the ranking above, or see all originals in our crypto casino originals RTP comparison.
FAQ
What is the RTP of mines at crypto casinos?
At most crypto casinos we review, mines pays 99%, a 1% house edge. Duelbits pays 99.44%. Rainbet and Roobet pay just 96%.
Which crypto casino has the best mines RTP?
Duelbits, at 99.44%. Eight more casinos pay 99%, including Stake, Shuffle and Thrill, and Duel and Gamdom add zero edge on your first $50,000 and $5,000 of bets a day.
Does the number of mines change the RTP?
No. The multipliers are set from the odds, so any number of mines returns the same RTP. More mines only mean bigger multipliers and rarer wins.
What are the odds in mines?
On a 25-tile board with 3 mines, you open 5 gems in a row about half the time, and a 99% game pays 2.00x for it. With 1 mine, your first click is safe 96% of the time.