Mine Gems

Mine Gems Overview

Mine Gems is a mines-style cashout game from BGaming, released on 19 August 2024. Instead of reels it uses a frozen 5x12 grid: you climb it row by row, and every safe pick raises the multiplier on your bet. BGaming gives the game an RTP of 98.4% and a top multiplier of x14.28; SlotCatalog lists bets from 0.10 to 100.

The numbers below come from our own demo session, played at a total bet of 100.00 FUN.

An Ice Cave Instead of Reels

The field is a wall of pale blue ice blocks set in a dark cave, with glowing crystals in the corners. A counter above the grid tells you where you are – “Step 1/12 – Select a tile” – and each row carries its multiplier on both sides. A slider on the right lets you scroll the tall field, and a small preview helps you see what lies ahead.

There are only two things hidden under the ice: a blue diamond and a bundle of dynamite. There are no paylines, no wilds and no free spins.

How a Round Works

According to BGaming, every row holds four diamonds and one dynamite. You place your bet and tap one of the five tiles in the bottom row. A diamond turns green and moves you up to the next step; the dynamite ends the round at once.

The game’s own paytable says it plainly: “Each row has a multiplier. If you land on a diamond, the multiplier of the row is applied to your bet. If you land on a dynamite, you lose your original wager and any previous winnings.”

Between picks you can press Cash Out at any time. The panel under the grid shows the current cashout value, so the only real decision in the game is when to stop.

The Multiplier Ladder

The multipliers we saw on the rows were x1.23, x1.53, x1.92, x2.4, x2.99, x3.74, x4.68, x5.85 and x7.31, and BGaming names x14.28 as the value of the twelfth and last row. Each step adds roughly a quarter to the previous one, so the ladder starts slowly and speeds up near the top.

At our 100.00 bet the first safe pick was worth 123.00 and the third was worth 192.00. Clearing all twelve rows would pay 1,428.00 – the x14.28 maximum. SlotCatalog rounds this to x14.

What Each Step Is Worth

At a 100.00 bet the cashout values follow directly from the row multipliers we saw:

• Step 1 – 123.00 (x1.23)
• Step 2 – 153.00 (x1.53)
• Step 3 – 192.00 (x1.92)
• Step 4 – 240.00 (x2.4)
• Step 5 – 299.00 (x2.99)
• Step 6 – 374.00 (x3.74), where we stopped
• Step 7 – 468.00 (x4.68)
• Step 8 – 585.00 (x5.85)
• Step 9 – 731.00 (x7.31)
• Step 12 – 1,428.00 (x14.28), the maximum

The multipliers of rows 10 and 11 were off-screen on our captures, so we leave them out rather than guess.

Why the RTP Is 98.4%

The ladder is built on simple odds. With four diamonds out of five tiles, each pick has an 80% chance to succeed. Our own calculation shows that each row’s multiplier matches those odds almost exactly: surviving one row (80%) at x1.23 returns about 98.4% of the bet on average, two rows (64%) at x1.53 about 98%, and all twelve rows (about 6.9%) at x14.28 again about 98%.

In other words, the expected return stays close to the published 98.4% whichever row you stop at. Cashing out early or late does not change the average – it only changes how often you win and how much.

How Likely Each Step Is

Using the same 80% chance per row, our calculation of the odds of reaching a given step from the start of a round is: about 51% for step 3, 26% for step 6, 13% for step 9 and just under 7% for the full climb to step 12.

That is the real trade-off in Mine Gems. Stopping at step 6, as we did, turns the bet into 3.74x about a quarter of the time. Going for the top almost quadruples that prize but succeeds in fewer than one round in fourteen. Because the dynamite is placed at random, no tile is safer than another – there is no pattern to learn, only the decision of when to cash out.

Our Session

In the round we captured we picked the fourth tile in five of the rows and the third tile in the fourth row, and cleared six rows in a row. The dynamite moved every time: it sat under the second tile in the first row, the fifth in the second, the third in the third, the first in the fourth, the second in the fifth and the first in the sixth.

With the x3.74 row cleared we pressed Cash Out, and the game showed: “Cashed out! 374.00 FUN – 3.74x bet”. The balance went from 700.00 to 1,074.00. After the cashout the whole field was revealed, including where the dynamite would have been in the rows we did not play.

A Provably Fair Game

SlotCatalog lists Mine Gems as a provably fair title, a feature BGaming uses in several of its instant games. The idea is that the position of the dynamite in each row is fixed before you pick, and the result can be checked afterwards.

BGaming does not publish a volatility rating for the game, so our data box leaves that field empty. In practice the player sets the risk: stopping after one or two rows gives small, frequent wins, while going for the top rows makes each round much riskier.

Who Should Play It

Mine Gems suits players who like quick, decision-based games more than spinning reels. A round takes seconds, the rules fit in one sentence, and the cashout button gives full control over how far to push.

It is not a game for long bonus rounds or big multipliers – the x14.28 cap is modest – but the high 98.4% return makes it one of the more generous titles in BGaming’s range.

Where to Play Mine Gems

You can try this game on MrJones Online Casino. There’s a unique casino bonus offer of 300% up to £1200 for a limited time.

Mine Gems was not available at any of our six partner casinos when we checked on 24 September 2026. Casino catalogues change often, so check the casino’s game list before you deposit – the free demo above works in the meantime.