Diamond Mine (Blueprint Gaming) – Review & Demo Play

Diamond Mine RTP and Wagering

I spin a 6‑reel Megaways grid with up to 7 symbols per reel and as many as 117,649 ways to win, plus a horizontal reel on top. I set stakes from 20p to £100 a spin. Wins land for 3 to 6 symbols on adjacent reels, except the Diamond which pays from two. Every win triggers chain reactions. Symbols explode and drop away, new ones cascade in, and I can land fresh lines on the same stake until no new combos form.

The maths is high volatility, so payouts can be chunky but spaced out. The RTP sits at 96.43%, above many video slots I play. The headline potential hits 50,000x stake, with the best chances in Free Spins thanks to the rising win multiplier. Some versions cap total return at £250,000, so stake sizing matters. I pace sessions, keep bets steady, and hunt bonus entry rather than forcing long base‑game grinds when reels feel cold.

Diamond Mine Symbols and Audio & Video Design

The setting is a diamond mine somewhere in North America. The look is cartoony, with reels in front of a rocky entrance, cacti and desert skies behind. Exploding symbols after wins add punch to the screen. The sound leans on American banjo licks that kick in on each spin. I like that the current number of ways to win shows in the top left. It keeps Megaways info clear without clutter and matches the mining theme.

Symbol range covers Diamond, Miner, Lantern, Tools, then A to 9 royals. The Diamond is the most valuable, paying up to 50x stake for six, and it even pays from two. The Dynamite icon acts as the Wild. It lands only in the positions above reels 2 to 5 on the horizontal reel and substitutes for everything except the Scatter. That placement lines up well with cascades and often finishes lines that start lower down.

Key payouts I track: Miner pays 1x, 2x, 2.5x, 7.5x for 3 to 6. Lantern goes 0.25x, 1x, 1.5x, 2x for 3 to 6. Tools pay 0.25x, 0.5x, 0.75x, 2x. Among royals, Ace and King top at 1.75x for six, Queen and Jack top at 1x, Ten at 0.9x, Nine at 0.8x. The Diamond steps up from 2x for two, then 5x, 10x, 25x, 50x up to six. These figures shape base‑game expectations during longer play.

Diamond Mine Symbols and Paytable

Symbol	Quantity	Payout
	6	x50
	5	x25
	4	x10
	3	x5
	2	x2
	6	x7.5
	5	x2.5
	4	x2
	3	x1
	6	x2
	5	x1.5
	4	x1
	3	x0.25
	6	x2
	5	x0.75
	4	x0.5
	3	x0.25
	6	x1.75
	5	x0.6
	4	x0.4
	3	x0.2
	6	x1.75
	5	x0.6
	4	x0.4
	3	x0.2
	6	x1
	5	x0.6
	4	x0.25
	3	x0.2
	6	x1
	5	x0.5
	4	x0.25
	3	x0.15
	6	x0.9
	5	x0.5
	4	x0.25
	3	x0.15
	6	x0.8
	5	x0.4
	4	x0.2
	3	x0.1
	Mystery
	Scatter
	Wild

Diamond Mine Bonus Features

Feature set is lean but effective. TNT barrels are the Mystery symbols. They can land anywhere on the grid, including the top reel. When they stop, every TNT in view flips to the same randomly chosen symbol, never a Scatter. I have seen them stitch ways across awkward gaps, especially when cascades leave uneven stacks. They also pair well with the Wild strip above the middle reels, which means more lines convert in one sweep.

Free Spins trigger when 4 bag‑of‑gold Scatters land, paying 12 spins, with 5 extra spins for each Scatter above the fourth. An unlimited win multiplier runs through the round, starting at 1x and going up by one after every cascade. Extra Scatters can appear on the horizontal reel over reels 2 to 5. Hit three up there for 5 more spins, or four for 10. I save my bigger pushes for this mode, as the rising multiplier is where totals build.

Diamond Mine Final Thoughts

Diamond Mine distils classic Megaways into a tidy package. Up to 117,649 ways, chain reactions, TNT Mystery symbols, and a free spins mode with a multiplier that climbs with each reaction. The 96.43% RTP and strong top end appeal, though variance can bite, and some setups cap wins at £250,000. The art and banjo track do the job without fuss. I come back for the rhythm of cascades and the free spins ladder, not flashy extras.