Timber Stacks Slot by Pragmatic Play

Wooden stacks frame a 5x5 grid set against a mountain meadow full of wildflowers. Four animal symbols - bear, cougar, owl, and golden fish - sit in circular wooden frames as high-value icons, while bold card royals fill the lower tier. A Mountain Wild lands on reels two through four and substitutes for everything except the scatter.

Every win triggers a tumble that clears winning symbols and drops fresh ones from above. Once the tumbles run dry, the Timber Stacks mechanic kicks in: one of the wooden columns collapses, adding rows to the grid. The base layout starts at 5x5 with 3,125 ways, but each collapsed stack pushes it further - all the way to 5x10 and 100,000 ways to win. After the full tumble-and-expand sequence ends, the grid snaps back to 5x5.

Four or more scatters award at least eight free spins. The expanding grid works identically during the bonus, so free spins can reach the same 100,000-way ceiling. A buy option at 120x the bet forces four scatters on the next spin. The Ante Bet toggle costs 25% extra per spin and doubles the chance of landing scatters.

The grid expansion is the entire draw here. Base game tumbles on a compact 5x5 feel tight, but a single stack collapse can double or triple the available ways mid-sequence. Stacking multiple expansions in one round is where the 10,000x max win lives.