Diamond Miner DuoMax Slot Review 2024

Dig deep underground and unearth the biggest Diamonds in Yggdrasil Gaming partner Reflex Gaming’s latest release, Diamond Miner DuoMax!

Head deep into the mine and find your bearings in Diamond Miner DuoMax, featuring 243 ways to win, cascading reels, an insane Free Spins round, and a TNT modifier with explosive potential!

Diamond Miner DuoMax - Base Game

Diamond Miner DuoMax – Base Game

Diamond Miner DuoMax – Slot Symbols and Their Values

Diamond Miner DuoMax is a 5-reel, 3-row Video Slot, playable from £.€0.20 per spin, up to a max bet size of £.€100 per spin. Simply scroll through the multiple betting options until you find one that works for you.

Diamond Miner DuoMax has 8 High-paying and 4 Low-paying symbols throughout, with the highest-paying Silver Gem producing wins of up to 4x your bet for a 5-line win.

Low-paying symbols are standard A, K, Q, and J, each delivering the same pay value of 0.05x, 0.15x, and 0.3x your bet for a 3, 4, and 5-line win sequence. Wild symbols substitute for all other symbols except Bonus Scatters.

Game Provider
Maximum Bet 100
Maximum Win 5,000x
Paylines 243 Ways
Release Date 21/05/2024
RTP 96.00% - 94.00% - 90.05%
Mechanics Video Slot
Volatility High
Reels 5
Minimum Bet 0.20

Diamond Miner DuoMax – Paylines and How to Get Them

Diamond Miner DuoMax has 243 active ways to win. Wins are created when 3-5 identical symbols land from left to right and right to left, starting from the leftmost and rightmost reel.

Cascading Reels

Each time a win occurs, all winning symbols will be removed through an explosion, making room for new symbols to drop in from above via a Cascade feature. With each Cascade, a new Wild symbol appears in a random empty position.

Diamond Miner DuoMax RTP, Volatility, & Max Win – Hot or Not?

Diamond Miner DuoMax is a Highly Volatile slot with a theoretical RTP of 96.00% and a hit frequency of 21.23%. This game is also home to lower RTP alternatives; 94.00% and 90.5%. Be sure to check which RTP level is available at your chosen Casino.

The RTP combined with the high volatility rating means that bigger wins are on the cards, however, the risk of hitting smaller wins over a short time is far greater. In addition, Diamond Miner DuoMax has a max win cap of 5,000x your bet.

Diamond Miner DuoMax Special features

Diamond Miner DuoMax is kitted out with 2 sets of Multiplier Trails, as well as Big Blast and TNT Bonuses, a Golden Bet feature and a Bonus Buy option.

The 2 Multiplier Trails are fitted on the leftmost and rightmost sides of the main reel set. The value to the left of the reel set is applied to left-to-right wins and vice versa. For both-way wins, the left and right Multipliers will be added together and applied. Once all wins are paid out, the Multiplier values reset.

TNT Bonus

After any non-winning spin, the TNT Bonus can be triggered. A mining cart carrying a character and a TNT detonator moves along the rails below the main reel set and stops under a random reel.

The TNT will blow up the column of symbols, eliminating at least 2 symbols and guaranteeing a win or Free Spins trigger. The TNT Bonus can also be awarded during a Cacsade sequence where 2 or more symbols do not participate in a win. The dropped-in symbols will guarantee an additional win.

Big Blast Bonus

The Big Blast Bonus is triggered after 4 consecutive wins/cascades (or 3 if the Golden Bet feature is active) hit in the base game. Once active, 1 of 4 special Modifiers are awarded.

  • Double Wild – Adds 2 Wild symbols to the reels instead of 1.
  • Multiplier Boost – A multiplier boost of x10 is added to both Multiplier Trails.
  • Wild Stack – Adds 3 Wilds to one randomly chosen reel, and +3 Wilds are stacked above them for the next Cascade.
  • Extra Life – All non-winning symbols in a Cascade are removed, and new symbols are dropped in from above.

Golden Bet

Before or after any game round, you can activate the Golden Bet feature for an additional 50% of your current bet. Once in play, the consecutive Cascades needed to trigger the Big Blast Bonus is reduced from 4 to 3.

Bonus Buy

  • Random Free Spins – 7, 9, or 11 Free Spins for 100x your bet.
  • Super Free Spins – 16 Free Spins for 300x your bet.

Diamond Miner DuoMax Bonus Rounds & Free Spins

Landing 3, 4, or 5 Bonus Scatters in the base game triggers the Free Spins round, awarding 7, 9, and 11 Free Spins respectively.

Before the round begins, a special Gamble Wheel presents itself, giving you the option to trade in your current Free Spins for more. You can gamble from one Free Spins level to the next by spinning the wheel and landing the cursor in the Green Segment.

16 free Spins can only be won by gambling from 11 Free Spins. Landing the cursor in the Red Segment ends the Gamble round, and no Free Spins are awarded. During Free Spins, each Multiplier Trail’s current level does not reset between spins.

Diamond Miner DuoMax - Free Spins

Diamond Miner DuoMax – Free Spins

Pros and Cons of Diamond Miner DuoMax


  • An exceptional number of thrilling features and modifiers.
  • The Golden Bet feature reduces the number of consecutive wins needed to trigger the Big Blast Bonus.
  • 2 Multiplier trails instead of 1.
  • Option to Gamble your Free Spins for more.


  • Max win cap of 5,000x your bet.
  • Overly-used Mining theme.
  • Gambling from 11 to 16 Free Spins has a below 50% success rate.

Similar Slots to Diamond Miner DuoMax


Diamond Miner DuoMax is another in a long line of slots to feature the word ‘max’ in its title, but we’re not focusing on DoubleMax or MultiMax this time. Diamond Miner is the first of its kind to take the DuoMax mechanic for a spin, but what (if any) differences can we expect to see?

The DuoMax mechanic is similar to that of DoubleMax, only we’re presented with 2 Multiplier Trails rather than 1. Pushing the cart out even further, Reflex Gaming has thrown in multiple features and modifiers, one of which includes a TNT Bonus that guarantees wins on random non-winning spins.

Triggering Free Spins gives players access to a Gamble Wheel, where you can trade your current Free Spins for more. However, you are not obligated to participate in this feature, meaning you can walk away with your current Free Spins in tow. During Free Spins, the Multiplier Trails do not reset and can combine their values when wins stretch across all 5 reels (both ways).

All in all, Diamond Miner DuoMax is a pleasant slot with a multitude of exciting features and mechanics!