Ladderz Slot by Playtech

The whole board is the engine here. A grinning clown sits at cell 1 of a 7x7 grid numbered up to 49, and your job is to march him to the top. He doesn't move on a timer or a spin counter, he moves on your wins. Every symbol that takes part in a winning cluster pushes the clown one cell further along, and since clusters of five or more matching symbols clear out and cascade fresh symbols in, a single good spin can chain several advances before it settles.

This is cluster pays wearing a snakes-and-ladders costume. Glossy card suits, pink hearts, blue spades, green clovers and gold diamonds, fill most of the board, with circus props like striped popcorn buckets, toy drums, juggling pins and purple magician hats as the higher pays, all of it under a red-and-white big-top canopy strung with carnival bunting. Two wilds change the texture: the Monkey Wild stands in for everything except the clown, and the Jack-in-the-box detonates every symbol next to it before settling in as a wild itself. The clown also drops a Monkey Wild in his old spot each time he advances, so his trail seeds the grid with substitutions.

Ladders are the shortcut. Land the clown at the foot of one and he climbs straight to the top, skipping cells. Golden ladders do that and collect a multiplier that hits every win on the spin, and these stack additively rather than multiplying together. Pass a coloured spotlight and you trigger a power-up, up to four in one spin: more golden ladders, a Curtain Call that wipes all suit symbols for a fresh cascade, Monkey Madness scattering extra Monkey Wilds, or Clown Chaos dropping extra Jack-in-the-boxes.

Reach cell 49 and the Grand Finale free games open. Now all four power-ups fire every spin, every ladder is golden, and you start with a single spin. Hit 49 again and you climb a level and bank another spin, with your collected multiplier carried over to the next stage rather than reset. The Extra Bet toggle doubles your odds of triggering the round naturally, or the Buy Feature drops you straight into it. Multipliers apply at the end of each level, so a deep run keeps stacking on top of a value that never falls back down.