Diamond Mine Extra Gold Slot – Free Demo

117,649 ways in a twenty-line catalogue

One frame I captured at the 5.00 stake had the ways counter sitting at 11,250, with a six-way win on it returning 10.00. The vast bulk of Blueprint Gaming's slots are restricted in terms of pay lines. The studio's other releases mostly hold to that fixed pay-line format, as King Kong Cash and Ted do, which leaves this one standing apart from the rest of the catalogue. The 117,649 ways to win found here is the outlier.

The reel set is a large one too. The refill arrives from above the reels, or from the right of the top horizontal reel. It extends over Megaways reels with cascading reactions sweeping away every winning combination, and the gold bag scatter rests on the top reel only and is the only route into the bonus. Across 410 spins I got through that one entrance twice, on spin 84 and again on spin 250.

The Diamond, the dynamite and the TNT barrel

Symbols on the reels are crowned by the Diamond. The Miner sits below it, and the card ranks fill out the low end of the table. It is the most prized of the base symbols, paying 50 times the stake for 6 across the ways. Five Diamonds pay 25 times the stake and four pay 10. The regular wild is the TNT dynamite, which replaces everything except the scatter, and alongside it rests the TNT barrel mystery symbol, which morphs into any symbol except the scatter.

Wins pay left to right on neighbouring symbols, every payout is multiplied by the stake, and most of the weight is held in the free spins feature. Symbol size makes no difference to that; adjacency across the reels is the whole condition.

What the free spins multiplier does between spins

4 scatter symbols trigger 12 free spins, and every additional scatter adds 5 more. Five scatters deal 17 and six deal 22, and 22 is where my first trigger opened on spin 84. When launched, the round carries a win multiplier. It begins at 1 and rises after every single reaction, with no ceiling on how far it goes. A spin that chains several reactions therefore finishes at a higher multiplier than it started on, and the figure carries forward into the spins that follow. Before the round begins there is also the Free Spins Gamble. The screen I captured offered a Take 20 spins step against a gamble wheel. It lets the player gamble the award they have been dealt for extra spins. Taking that deal replaces the awarded spins rather than adding to them.

The bonus can be re-triggered from inside itself. Neither of my two rounds managed it. 3 scatters grant another 5 free spins, and 4 scatters grant another 10. The round is also for sale through a Golden Bet panel, which read 250.00 against my 5.00 stake, or fifty times the bet.

Fifty times the stake on the Golden Bet panel

Blueprint Gaming promotes a max win of 50,000 times the stake. Getting near it needs the free spins multiplier to climb through a long run of reactions with the ways count high underneath it. But the best I witnessed across 410 spins was the 113 times the stake that the first bonus delivered on spin 84. Fifty times the stake buys entry and nothing beyond it, and the floor on that entry is the four-scatter award of 12 free spins, the same round the base game opened for me twice at the price of a spin. A second bonus paid 96 times the stake on spin 250. The help panel puts the bought feature's RTP at 96.70%.

Final Minty Score: Fifty times the bet on the Golden Bet panel guarantees one thing, the four-scatter award of 12 free spins, and everything above that floor is left to the reaction multiplier once the round has started. My two triggers ran to 113 and 96 times the stake and between them accounted for 55% of everything the session won.

Two rounds out of 410 spins

I have to concede that I have a soft spot for unlimited rising multipliers. The two rounds I saw came 166 spins apart, and in between sat a run of 20 spins without a win that ended on spin 120.

But Blueprint Gaming leaves the main game short of features, and my own 410 spins hit on 65 of them and finished at a 92.2% return, with the two bonuses making up 55% of everything won.