Diamond Hustle Slot by Evoplay

There are no regular symbols here and no wins in the base game at all. Every symbol on the 3x3 grid is a special type - Bonus, Sticky Bonus, Solid Bonus, Magic Stone, Mystery, or Mystery Jackpot. Landing three of any combination on the middle row starts the bonus game. With a 2.98% hit frequency, those triggers are rare, but the Sticky Bonus mechanic helps bridge the gap. Sticky Bonus symbols (valued 5x to 9x) stay pinned to the reels between spins until the bonus fires, so near-misses carry forward instead of vanishing.

Inside the bonus round, the hold-and-win mechanic runs on the standard 3-respin timer. But two mechanics layer on top. Magic Stone acts as a collector - each time one lands, it absorbs the values and jackpots from every symbol currently on the grid. Multiple Magic Stones create a snowball effect where each new one copies an increasingly large pot. Mystery symbols reveal their identity at the end of the round, transforming into any symbol type except Sticky Bonus, while Mystery Jackpot symbols guarantee one of three jackpot tiers.

Diamond Boost is the wildcard. It fires randomly during the main game or mid-bonus, placing position-specific multipliers (x2 to x9) on the grid. When triggered in the main game, it also forces three symbols onto the middle row, guaranteeing a bonus entry. Multipliers stack on repeat activations and apply to whatever sits in that position when the bonus ends. A well-placed x9 on a gem-loaded Magic Stone that has been collecting all round - that is where the 4312x ceiling lives. Fill all nine positions and the Grand Jackpot (500x) adds to the total.