Piggy Bank: 3 Pots Bonanza Slot by Evoplay

Buy bonus comes in three tiers here, and the price gaps tell you a lot about the math. One random booster at 35x, two at 44x, or all three at 66x. That last option nearly doubles the cost of one booster - but activating all three reshapes how the bonus round plays out. Each booster is tied to a specific piggy bank sitting above the reels: xFortune (red) inflates bonus symbol values during the round, xReels (blue) splits the field into two independent grids, and xSpins (green) bumps the starting respins from 3 to 4.

The bonus itself is a hold-and-win round stripped down to a blank grid. Colored bonus symbols that triggered the round convert to gold and lock in place, each carrying a random value between 1x and 15x or one of the fixed jackpot tiers (MINI at 35x, MINOR 80x, MAJOR 350x). New gold symbols reset the respin counter. Fill all 15 positions and the GRAND pays 3000x - with xReels active, you're running two separate grids, so two GRANDs become possible on the same trigger.

xFortune is the one worth paying attention to. On each bonus spin, 1-4 locked symbols get their values bumped by 0.5x to 10x, and the increases stack. A symbol sitting at 2x after the first spin might climb to 5x, then 8x, then higher if xFortune keeps hitting it. Jackpot-tier symbols (MINI, MINOR, MAJOR) are immune to the boost, so only the numeric values grow. The stacking is what pushes the ceiling to 6,414x - without xFortune, most bonus rounds would settle well below that.

Gold coins, jeweled money bags, and stacked bars fill the premium symbol positions against deep purple reels. The whole frame glows warm gold with a sparkle-heavy background, and the three piggy banks - bright green, orange-pink, blue - bounce and animate above the grid with a cartoonish energy that leans playful rather than serious. Card royals (K, Q, J, 10, A) make up the low end. Visually, it commits fully to the piggy-bank-and-treasure motif without trying to be anything else.