Provider:
Hacksaw Gaming
Every win in Stack'Em keeps its symbols, drops them to the bottom and adds up the values under their reels into one multiplier. My single Free Spins round came on spin 10 and paid 35x a 20.00 stake; the other 289 spins carried the balance down to 1,390.00.
Stack'Em is a video slot made by Hacksaw Gaming, and it has a layout of 5x6 and pays in clusters. It's playable on all platforms from €0.20 to €100. The session below was played at a 20.00 stake from a 5,000.00 balance. It has a 96.20% RTP.
This one is quite plain and uncomplicated. The base game adds a single mechanic to the cluster pays, the stacking multipliers, and Free Spins are the only bonus round. Most players will get a handle of it more or less right off the bat. It's all about the bonus, while the main game does have a stacking mechanic. Over this session Free Spins paid 700.00, which was 32% of everything won. The bonus is nearly as poor as the main game. Across 290 spins, 62 paid something, and 30 of those returned less than the 20.00 stake.
Win pays if 5 or more of the identical symbol link. The group has to be connected, as symbols split apart by another symbol do not form one cluster. They can link anywhere on the matrix. Only the highest win per cluster is paid, and several wins in one round are added together.
In this game Canny the Can reappears with his pal Mona the Mouse. The Thumbs Up is the highest symbol. Its smallest cluster of 5 or 6 pays 0.5x the stake. It is the most profitable one, which is 200x for 25 or more in a cluster, and the Wild symbol replaces all paying symbols. The Leaf, Shoe, Skull and Snake each pay 100x the stake for 25 or more in a cluster.
There remainder of the symbols? The letter blocks A, G, E, R and T pay 0.1x the stake for a cluster of 5 or 6 and 25x for 25 or more. They are not interesting enough to spend ink describing.
The Stacking Multipliers feature emerges after every win during the main game, and non-winning symbols are eliminated and winning symbols fall to the bottom. The value below each reel shows how many winning stacked symbols that reel holds. This essentially means a figure under each reel multiplies the cluster resting above it. Every winning cluster is multiplied by the total of the values it sits above, and the process repeats for as long as further wins stack.
It is more often than not pointless. On spin 159 a cluster paying 10.00 sat over values of 3x and 3x, was multiplied by 6 and returned 60.00, or 3x the stake.
3 or more FS scatter symbols landing anywhere on the reels in the main game trigger 5 Free Spins. They are displayed as hearts. The round keeps going until no hearts remain, and every symbol is cleared off the grid between spins.
Additional lives can arrive from the ? symbol, 2 to 5 at a time, and being a high volatility game it will require those spins if it's going to pay anything at all. The ? symbol can instead add 1, 2, 5, 10, 25 or 50 to the total multiplier, or multiply it by 2, 3, 4 or 5.
To the overall multiplier, each win during the Free Spins contributes its count of winning symbols. On any free spin an X symbol can also land, multiplying every winning cluster that connects with it by the factor shown above the reels.
As you likely already surmised, I'm not a huge fan of this game—why? It is thoroughly dull and it doesn't pay anything, plain as that.
Minty Slots Verdict: The session ended at 1,390.00 from the 5,000.00 start, a return of 37.8% on 5,800.00 wagered. But in this situation...no.
The longest run without a win lasted 16 spins and ended on spin 113. I played it for 290 spins. The balance peaked at 5,598.00 on spin 10 and bottomed out at 1,358.00. The bonus only appeared once, on spin 10, paying 35x the stake, though to be just, ok, there is some upside available with a max win of 10,000x the wager. No ? symbol landed in that round, so it ran on the initial 5 lives.
It's conceivable you will like it. I didn't.