
Stack ‘Em takes place in a cartoon forest clearing, with thick tree canopies on the sides and a bright blue sky overhead. A little character in a top hat – Canny the Can – hangs around the edge of the grid along with Mona the Mouse, and the symbols are all painted onto wooden blocks.
It’s a 5-column, 6-row slot where wins are formed by clusters of 5 or more matching symbols connected horizontally or vertically, with bets going from 0.20 to 100 per spin.
Stacking Multipliers
The way this works is that after a win, non-winning symbols are cleared and winning ones drop to the bottom of each reel. Below every reel, there’s a Multiplier value that tracks how many winning symbols have been stacked in that column. All winning clusters are then multiplied by the combined total of the Multiplier values beneath them, and the process continues for as long as you’re hitting new wins on the same spin.
Free Spins With Mystery Symbol
Land 3 or more Free Spins symbols, and you get 5 spins to start with, displayed as Hearts above the reels. During the round, every win adds its cluster size to a total Multiplier. There’s also a Mystery Symbol (the Question Mark) that can hand out 2 to 5 extra spins, add to the Multiplier, or multiply the current Multiplier total by up to 5x.
X Symbol
An X Symbol can appear during Free Spins as well. If a winning cluster connects with it, that cluster’s payout is multiplied by the factor displayed above the reels – a separate Multiplier from the one that’s been accumulating throughout the round.
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