Mask Carnival Slot by PG Soft

Collapsing reels clear every winning combination and drop fresh symbols from above, but the grid doesn't stay the same size while that happens. Each cascade adds an extra reel to the right side of the layout, stretching the default five columns outward and pushing the way count past 1,024. A multiplier tracks above the grid and ticks up by x1 for every reel that gets added during a spin sequence. That resets each spin. So a cascade chain that extends the grid by three reels pays the later wins at x4 - not enormous on its own, but the shifting layout also means more symbol positions generating new connections with each drop. The reel expansion is the game. Without it, this would be a standard tumble slot with a flat multiplier.

Venetian masks fill every symbol position - cat faces in purple and pink, ornate blue-and-gold domino masks, a jester in red and green, and a full-face white bauta trimmed in gold as the top-paying regular. The grid sits between candy-pink marble columns with a gondola drifting across a waterway below the reels, all rendered in soft pastels and warm golds rather than the neon palette PG Soft leans on elsewhere. Card royals from 10 through Ace are styled with carnival flourishes - curling ribbons and feathered edges - so they blend into the mask theme instead of looking like placeholders.

Three scatters collected across a full cascade sequence (not just a single drop) trigger 10 free spins, with 2 more per extra scatter. The starting multiplier jumps to x2 instead of x1, and here's the difference that matters: every extra reel added during free spins increases the multiplier by x2 instead of x1. A three-reel expansion in base game gives you x4. The same expansion in free spins gives you x8. Dedicated +1 symbols also appear on the reels during the bonus - each one awards an extra free spin, which is the retriggering mechanism. No buy bonus option, so you're hunting those three scatters through natural play every time.