Plunderland Slot by Relax Gaming

The 7x7 grid sits in a sun-dappled English garden, with Alice in her blue dress reading on the grass beside the reels and a hedge maze rolling out behind. It's the calm version of Wonderland - no surreal madness, just pastoral light, climbing roses, and Mad Hatters and Queens of Hearts as cluster symbols. Wins need 5+ matching adjacent symbols, then tumble out for cascades.

The mechanic that drives everything is the White Rabbit. One Wild lands per spin, and every time a cluster pays, the Rabbit walks one position toward the central Hot Spot - that bordered frame in the middle of the grid. Reach it and the Wild expands. The size depends on how grown the Hot Spot is: 2x2, then 3x3, all the way up to 5x5. A 5x5 wild block on a 7x7 cluster grid does roughly what you'd expect.

Mad Hatter's Free Spins trigger from 3+ Scatters and run for just 6 spins, which sounds short until you read the persistence rules. The wild multiplier doesn't reset across the bonus. Hot Spot size doesn't reset either - it keeps growing. Only the Walking Wild itself resets to 1x1 after an expanded wild contributes to a win, then starts the walk again. So a quiet first three spins aren't dead time, they're setup for what the last spin can do once the Hot Spot has bloated to 4x4 or 5x5.

Skipping straight to the bonus runs 70x your bet, which is on the cheaper side for a cluster-pays game with this much persistence baked in. Worth flagging: the buy is UK-restricted, so check availability before you go looking for the button.

Six spins is short, the Hot Spot rarely maxes out on average sessions, and the base game can feel slow while you wait for the Rabbit to actually reach the middle. But when the walk lines up - cluster, tumble, cluster, tumble, Rabbit hits the Hot Spot, 4x4 wild drops, the whole grid lights up - it's one of the cleaner expanding-wild bonuses Relax Gaming has built around a Carroll license.