3 Oaks Gaming has launched Aztec Fire 2: Hold and Win Multi, the next instalment of this popular Mexican adventure which now showcases the powerful Unlockable Rows feature.

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In this 5x4 sequel, players are on the hunt for ancient treasures during the Hold and Win Bonus round, which is accessed by collecting six bonus symbols.

During this mode, rows five to eight are locked to begin with. When further bonus symbols are collected, the rows gradually unlock one by one.

Ten bonus tiles activate the fifth row, 15 for six, 20 for seven and up to 25 expands the reels to eight rows, boosting the opportunity for bigger prizes.

When an entire row is filled with symbols, all the values on that row are enhanced with a multiplier up to x10. When the grid is fully expanded and occupied with symbols, the Royal Jackpot is awarded with players winning 10,000x their stake.

Within the base game and free spins, where only top-paying symbols are visible, the Bonus Accum Mechanic also makes a return. Each bonus symbol that appears is added to a meter which, when full, unlocks the Hold and Win feature.