Wild Hop & Drop Slot by Pragmatic Play

Six different frog species crowd a dark 6x6 grid - a green tree frog, a purple poison dart, a blue-backed specimen, an orange toad, and a red one with what looks like a tiny cape. They sit on a wooden platform over a glowing pond, lily pads and mushrooms lining both sides, moss-covered stones and twisted roots framing the scene in saturated greens and teals. Card royals are sculpted from the same soft clay-like material as the frogs, in pink, blue, and green, which keeps them from clashing with the rest of the art. Wins form through cluster pays - six or more matching symbols connected horizontally or vertically clear from the grid.

The frog wild is the mechanic that matters. It starts as a standard 1x1 symbol on the reels, roaming to a new position after each spin. Four bonus scatters trigger 6 free spins, and that's where the progression kicks in. Every time you collect 4 more bonus symbols during the round, two things happen: the frog wild grows one size larger (from 1x1 to 2x2, then 3x3, and so on up to 6x6), and you get extra spins to work with the bigger wild. A 3x3 frog roaming across a 6x6 grid covers a quarter of all positions on every spin, which forces cluster connections almost by default. At full 6x6 the wild fills the entire grid - at that point any remaining regular symbols just need to match each other. For 100x the bet, the buy bonus skips straight into free spins.

The base game frog still roams between spins but stays at 1x1, so most of the action concentrates inside the bonus. That progressive growth resets if you retrigger free spins from a fresh set of 4 scatters rather than from the collection mechanic, which is a distinction worth tracking. The 5,000x cap keeps the math ceiling visible, but a fully grown wild turning every adjacent cluster into a guaranteed connection is the kind of visual payoff that makes the grind to get there feel purposeful.