Stack 'em

What Stack 'em has actually done in our bonus hunts

We have opened Stack 'em 20 times across 20 separate bonus hunts between 15 Jun 2026 and 5 Oct 2026 and recorded every result. Across those 20 opens the median result was 28.65× the bet, against 50× for every slot in our recorded dataset. The biggest single result we have recorded on it is 1,329.5×. 6 of those 20 opens were 100× or better. These figures describe only the sessions we recorded — they are not this slot's RTP and they do not predict what your next bonus will do.

Stack 'Em continues the Stick 'Em line from Hacksaw Gaming, keeping characters Canny the Can and Mona the Mouse plus a swing-band soundtrack, on a 5x6 grid, where clusters of five or more connected symbols — matched vertically or horizontally — pay out.

The paytable's ten regular symbols split into five letter tiles (A, G, E, R and T) at the low end and five higher-value picks — a leaf, a sleeping bird, a skull, a serpent and a thumbs-up gesture — worth more per cluster; a cluster of 25 or more matching symbols pays 25x to 200x the bet. A wild tile lands anywhere on the grid and substitutes for every symbol except the free spins scatter.

After a winning cluster pays, the symbols involved clear from the grid, the remaining symbols drop to fill the gaps, and new symbols fall in from above — if the drop creates another winning cluster, the process repeats. Each reel also tracks how many winning symbols have appeared on it, converting that count into a multiplier of up to 6x per reel; the total across all six reels, capped at x30, is applied to the win before it clears ahead of the next spin.

Landing three or more scatter symbols opens the free spins round, shown as a set of five lives above the reels rather than a spin counter. Here, a single running multiplier climbs by the size of each winning cluster — a ten-symbol cluster adds +10, for instance — and two extra symbols come into play: an 'X' symbol that multiplies any cluster it's connected to by the current multiplier value, and a question mark that randomly adds 2-5 lives, adds 1-50 directly to the multiplier, or multiplies the running multiplier by 2, 3, 4 or 5.

The free spins round can also be triggered instantly by paying 129x the bet.

The default RTP is 96.2%, volatility is rated high, hit frequency runs at 10.56%, and stakes range from 0.20 to 100 per spin, with a maximum win of 10,000x the bet.