Diamond Mine Slot Review
Red sandstone bluffs, a reel frame lashed together with rope, and sacks of gold nuggets slumped along the bottom of the screen: Diamond Mine dresses up like a Saturday-morning cartoon about the gold rush. Underneath the outfit, it’s one of the most single-minded Megaways games Blueprint Gaming have ever shipped. Six reels, up to 117,649 ways to win, and exactly one bonus round asked to carry the entire game, because where later Megaways titles stack features on features, this one hands everything to a free spins round with an unlimited multiplier.
It’s the game the sequel Diamond Mine 2 Megaways was built on, and the original is a plainer machine that does a few things and does them properly. It shares a stable with Buffalo Rising Megaways and Genie Jackpots Megaways, but strips the format back to its working parts. For a dig this shallow, the seam runs surprisingly deep.
Base Game & Features
Each of the six reels can reveal up to seven symbols in view. Because the reel heights change on every spin, the number of ways to win changes with them, topping out at 117,649. A win is 2, 3, 4, 5 or 6 consecutive matching symbols from the leftmost reel, regardless of height, on any of the Megaways.
The rest of the win maths is short and clean:
- All winning combinations on a spin are added together
- Only the highest win is paid per winning combination
- Payouts are multiplied by stake
- Winning symbols trigger a cascade rather than ending the spin
The look is bright, glossy cartoon work with thick outlines. The grid sits inside a rough wooden scaffold with a railed fence along the top, a cactus poking up at the edge of the frame, and a weathered signboard nailed to the rock above the reels. It’s a claim-stake postcard, and the art knows exactly what kind of game it’s decorating.
Cascading Symbols
Every winning combination sets off a chain reaction. The winning symbols are cleared from the reels, new symbols drop in from above, and any win formed by the newcomers clears again. The cycle repeats until a fall produces no new win, and only then does the spin settle.
There are extra symbol positions above reels two, three, four and five. They help form wins, they’re refilled from the right, and they’re the only positions in the game that can reveal wild symbols. The wild stands in for any paying symbol, with one exception, and it never substitutes for a scatter.
Cascades are also how the game strings together a big spin. A single win is often small, but each fall brings fresh symbols and another chance to connect, so a spin’s real value is decided by how many links the chain holds. On a full six-reel grid, there’s a lot of room for that chain to grow.
TNT Symbol
The TNT symbol can appear in any position, and it’s the base game’s one real twist. When it lands, every TNT symbol in view explodes and reveals the same random symbol, which can stitch together wins that the falling reels couldn’t. TNT can’t reveal scatters, so it’s a win helper rather than a bonus trigger.
Because all TNT symbols in view resolve to one identical symbol, a screen with several barrels can turn a dead spin into a paying one. The reveal can land as a low-value royal as easily as anything else. When it does connect, though, the cascade takes over from there.
Autoplay
There’s an autoplay function that starts each spin automatically. You select your stake as normal, choose the number of automatic bets, and the game runs them one after the other. It switches itself off if a bonus round starts, if a set loss limit is reached, or if a progressive pot is awarded where applicable, and a stop button ends it at any point. Availability depends on operator configuration and jurisdiction.
Diamond Mine Free Spins & Bonus Round
The bonus is a free spins round with one job. Scatters can land on any reel but never in the positions above the middle reels, and the awards step up with each one past the trigger:
- 4 scatter symbols in view award 12 free spins
- Each additional scatter adds 5 extra spins
- Scatter wins are paid on top of reel wins
The round runs on an unlimited win multiplier. It starts at 1 and climbs by 1 after every cascade, so a long chain of falls inside a single spin ratchets the value up with each link. The multiplier never resets during the round, which is what separates a free spins cascade from a base game one.
The multiplier is the whole reason the round matters. A spin that cascades five or six times pays each successive win at an ever-higher value, and because cascades also feed the reels with fresh symbols, one hot spin can carry most of a bonus on its own.
Retriggers are worked into the same positions above the middle reels, which can reveal free spins scatters during the round:
- 3 free spins scatters award 5 extra spins
- 4 free spins scatters award 10 extra spins
The stake that triggered the round holds for its duration, so every cascade and retrigger pays at the bet you entered on. At the end, total winnings for the spins are displayed, credited, and regular play resumes. Simple rules, one multiplier, and no side features to interrupt the chain.
Our Honest Verdict
Overall Rating: 7.7/10
Playing Diamond Mine is a long shift at the claim: quiet digging, the odd TNT blast, and the real pay waiting underground in the free spins. That’s the one reason to pick it, and it’s a good one. Nobody has ever loved this base game, but everybody remembers their first cascade inside the bonus.
The strength is the round itself, which is pure escalation: the multiplier climbs on every cascade and never resets, so one long chain can out-pay everything that came before it. The weakness is the ground you cross to get there. TNT aside, the base game offers nothing between bonuses, and the wait for four scatters can stretch a long way.
It’s for players who like the old Megaways shape: one round, one multiplier, no padding. It isn’t for anyone who wants layered modes and buys, and Diamond Mine 2 Megaways exists for exactly those players. Like the claim it’s drawn on, this one rewards whoever’s willing to keep digging.
Diamond Mine FAQs
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How do you trigger free spins in Diamond Mine?
Land 4 scatter symbols in view for 12 free spins, with 5 extra spins for every additional scatter. Scatters can land on any reel but never in the positions above reels two, three, four and five. Scatter wins are paid on top of reel wins. -
What does the TNT symbol do in Diamond Mine?
The TNT symbol can appear in any position. Every TNT symbol in view explodes and reveals the same random symbol, which can complete wins across the reels. TNT cannot reveal scatter symbols. -
How does the win multiplier work during free spins?
Free spins run with a win multiplier that starts at 1 and increases by 1 after every cascade. The longer a cascade chain runs, the higher each successive win in it pays. -
Can free spins retrigger in Diamond Mine?
Yes. During free spins the positions above reels two, three, four and five can reveal free spins scatters. 3 of them award 5 extra spins and 4 award 10 extra spins. -
Where can wild symbols appear in Diamond Mine?
Wilds exist only in the positions above reels two, three, four and five. They stand in for any paying symbol other than scatters, and only the highest win counts for each winning combination. -
How many paylines does Diamond Mine have?
Diamond Mine uses the Megaways system rather than fixed paylines. Each reel can reveal up to seven symbols in view, giving up to 117,649 ways to win on a single spin. -
What is the grid size of Diamond Mine?
Diamond Mine is a six-reel slot with a variable number of rows per reel. Reel heights change with each spin, which is what produces the Megaways format and the shifting ways to win. -
Who makes Diamond Mine?
Blueprint Gaming. The Megaways engine itself is licensed from Big Time Gaming, and Diamond Mine sits among Blueprint’s earliest uses of it.

