Every spin starts with a 4-reel, 4-row gaming grid. When symbol matches occur around the edges of the gaming grid or bombs explode, you can expand the grid. This way, you can add 3 rows to both the top and bottom of the gaming grid during the main game. When you unlock all 10 rows, you progress to the bonus game for 6 Free Spins. In Free Spins, the Expanding Reels Feature lets you add 2 reels to the left and right sides of the gaming grid, up to 8 reels.

Vertical Bombs, Horizontal Bombs, Diagonal Bombs, and Plus-pattern Bombs may land on the reels during the main game and Free Spins. Persistent Bombs may only appear in Free Spins. Omni directional Bombs and Cluster Bombs may explode in the main game, during Free Spins, and in the Treasure Prize Feature. Bombs explode after the bet way wins pay out and before an Avalanche™. - Vertical Bomb – Explodes vertically to remove adjacent symbols to the top and bottom of its position. - Horizontal Bomb – Explodes horizontally to remove adjacent symbols to the left and right of its position. - Diagonal Bomb – Explodes diagonally to remove symbols adjacent to the corners from its position. - Plus-pattern Bomb – Explodes like a cross to remove symbols adjacent to its position on the top, bottom, left and right. - Omni-directional Bomb – Explodes along with all symbols adjacent to its position to remove all touching symbols. - Cluster Bomb – During the main game, it randomly explodes 3-5 brick-covered positions. In Free Spins, it explodes 3-5 positions not occupied by other bombs. - Persistent Bomb – Only activates in Free Spins. It explodes along with all symbols adjacent to its position to explode again once on each following spin until Free Spins end.

Expanding the gaming grid to 10 rows triggers 6 Free Spins. Here you can expand your reels by 2 on both sides, and only 1x multiplier symbols, and Super Bombs may appear. Prizes landing on the gaming grid remain there till the end of Free Spins, and prize values are multiplied by up to 2,048x when a bomb explosion covers its position.

Vertical Bombs, Horizontal Bombs, Plus-pattern Bombs, Diagonal Bombs, Omni-directional Bombs and Cluster Bombs can all be found as Treasure Prizes when uncovering new positions on the reels in the main game or in Free Spins. Additional Treasure Prizes may be found in Free Spins: - The Large Prize comes with a value of 16x, 32x, or 64x of the original wager. - 1 Extra Free Spin is awarded.

You can trigger Free Spins anytime with the Buy Feature. Pay 75x your bet for 6 Free Spins, or go for 150x to unlock 6 Free Spins with a Persistent Bomb randomly placed on the reels at the start of the bonus round—adding extra explosive potential to every spin.