Diamond Blast Advantage Play

Diamond Blast Slot Machine Review

IGT’s Diamond Blast is a mining-themed video slot that’s all about building the playfield bigger and then cashing in when the feature hits. The game starts on a compact grid, but it can expand into a much larger matrix, which changes how many ways you can win on any given spin. That “grow it, then blow it up” loop is the core appeal here, especially for players who like visible progress instead of a bonus that feels totally random.

Slot Pictures

Gameplay Mechanics

The base game begins on a 3×5 matrix and can expand into a 6×5 matrix. As new spaces open, the win structure grows with it—anywhere from 243 up to 7,776 ways to win, depending on how expanded the grid is at that moment.

The expansion is driven by a Pickaxe symbol that can appear on reels 2, 3, and 4. Each Pickaxe unlocks additional spaces one at a time, moving left-to-right, and those extra spaces can make a noticeable difference because they increase the number of symbol positions in play. In plain terms: the more the grid opens, the more chances you have to connect winning combinations.

Then there’s the other side of the loop: the reset. A TNT symbol can land and “blast” the grid back to its starting size. That might sound like bad news, but it comes with a payoff—TNT awards a bonus based on how many spaces were unlocked before the reset happened. So even when the matrix shrinks, it doesn’t feel like you lost progress for nothing.

Betting is typically kept in a friendly range, with examples showing play that runs up to $4 max depending on setup.

Special Features

The headline feature is the Diamond Respin Bonus, and it’s the moment Diamond Blast is really trying to deliver. The trigger condition is straightforward: it unlocks when six or more Diamond symbols land in any exposed spaces on reels 2, 3, or 4.

Once the respin starts, it becomes a “collect and lock” style bonus. Diamonds lock in place for the duration of the feature, and every time new diamonds land, the respin counter can increase by 1, giving you more chances to keep building the board. That creates a satisfying snowball effect when it’s going well—one good hit can buy time for the next one.

The bonus also includes clear milestone targets tied to jackpot-style awards:

• 10 diamonds collected: awards the Mini Jackpot, plus it can expose the 3rd row if it isn’t already open.
• 15 diamonds collected: awards the Minor Jackpot, plus it can expose the 2nd row if it isn’t already open.
• 20 diamonds collected: awards the Major Jackpot, plus it can expose the 1st row if it isn’t already open.
• 30 diamonds collected: awards the top Jackpot.

A nice detail is that the prizes accumulate. So if you reach 15 diamonds, you don’t “replace” the Mini you win both the Mini and the Minor as part of the same feature run.

From a player’s point of view, the Diamond Respin Bonus is easy to understand and fun to sweat. You’re not doing math. You’re watching the board fill up, hoping the respin counter keeps getting refreshed, and chasing the next milestone.

Design and User Experience

Diamond Blast leans into a simple “dig site” look—hard hats, pickaxes, and gem visuals that are easy to read at a glance. The expanding matrix is also a design feature, not just a mechanic: when the board opens up, you feel like something is changing, because the screen physically gives you more space to play on.

The TNT reset is another strong presentation moment. It gives the game a built-in “release valve”—you watch the grid grow, you hope it grows more, and then the blast hits with a reset payout that makes the moment feel meaningful instead of frustrating.

Overall, the game’s design supports what the title promises: it’s bright, readable, and focused on a single satisfying loop expand the grid, then let the feature turn that progress into a payoff.

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