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Stack ‘Em Slot

Stack ‘Em
Stack ‘Em
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Updated: 22.07.2025
Reviewed by: Ella Houghton
How about playing a fun online slot with innovative mechanics? An excellent example of this kind of game is Stack ‘Em from the Hacksaw Gaming which entered the game world on 14/05/2021. The slot is free of classic reels, has a fun theme, and can bring some huge winnings to lucky ones. It sounds really fun, but it will be better if you learn more about the slot. And we are ready to reveal essential details of the Stack ‘Em spinner here from RTP to payouts, from max win to volatility

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In this review
  1. Slot details
  2. Theme
  3. Bonus Rounds & Free Spins
  4. Summary
  5. Where to play
General information about Stack ‘Em slot

General information about Stack ‘Em slot

Rating by Ella Houghton:
8.1
User’s Rating: Not rated yet
Hacksaw Gaming
Write a review +25 SJ points
  • Release Date:
    14.05.2021
  • Volatility:
    High
  • RTP:
    96.2%
  • Multiplier:
    Yes
  • Max. win:
    10,000x
  • Bonus game:
    No
  • Free spins:
    Yes
  • Scatter Symbol:
    Yes
  • Wild symbol:
    Yes
  • Symbol Stacked:
    No
  • Jackpot Game:
    No
  • Slot lines:
    Cluster pays
  • Slot reels:
    5
  • Layout:
    5-6
  • Stakes range (€/£/$):
    0.20 to 100
  • Slot Theme:
    Cartoons
  • Technology:
    JS, HTML5
More infoLess info

Licensed and tested by

  • eCogra
  • Gambling Comission
  • Isle of Man Goverment
  • ISO 27001
  • MGA
  • Spel inspectionen

How to Play

Please, check our simple guide to start playing Stack ‘Em online slot from Hacksaw Gaming:

  1. Find the game in the casino’s lobby and push the “Play” button
  2. Wait until the content is fully loaded
  3. Click to continue and proceed to the slot’s layout
  4. Use arrows to set the size of the bet. Min bet is €0.2, while the max bet is €100
  5. Check the info or change settings if you want to
  6. Start spinning the slot manually or with the auto-play feature

You can set requirements to spot auto-play, enable turbo-spin, and change visual and sound settings.

Stack ‘Em has a 5x6 grid and cluster pay mechanics. It means that symbols stay on the reel after a successful spin as long as they are part of the winning combination. Other (non-winning) symbols disappear while new elements replace them. A winning combination requires at least 5 connected elements.

During the regular game, the player will be constantly awarded multipliers. The overall multiplier of stake is the sum of multipliers of every row. These row-multipliers equal the number of winning symbols on a particular vertical row.

The slot has a bonus game, which can be activated with the buy feature for the price of 129x.

Stack ‘Em RTP and Volatility

7.9 
Stack ‘Em is a high-variance spinner with an RTP of 96.2%.
The return to player of 96.2% is an average index for the industry. The good news is that the level of payouts doesn’t drop after buying the bonus. Stack ‘Em is a high-volatile game like most cluster-pay slots with an increased grid. Building a big and high cluster in the regular game is not easy. But that’s the only way to get good payouts and multipliers. Moreover, the chance of hitting the FS is relatively low, as you can see from the high-price of buy feature. We recommend playing this slot for more extended sessions to overcome possible swings.

Theme

8.2 

We can’t exactly say what the central theme of the slot is. It’s both funny and psychedelic with its symbols. The best part about the slot’s theme is the two main heroes: Canny the Can and Mona the Mouse. They stand on opposite sides of the gaming board, watching the process and even giving some reactions. Canny has already become a meme among gamblers because of his fun character.

The slot has a cartoon-like graphic and a lovely peaceful background of the young oak grove with birds signing here and there. You can hear a light soundtrack during the base game and a more fun soundtrack during FS. There are also a lot of sound effects of different actions (spins, special symbols, activation of features).

All in all, the slot looks and sounds brilliant. The duo of Canny the Can and Mona the Mouse is hilarious.

The choice of symbols in the slot may look random. But we think the provider tried to give the psychedelic vibes to the game. And did it successfully.

We have cheap symbols of letters (A, G, E, R, T) of the same value from 0.1x to 25x. More valuable symbols are scull, ship, leaf, and snake with the same payouts: 0.25x, 1x, 2x, 3x, 5x, 20x, 50x, and 100x. The most valuable element is “Thumbs Up” with the price twice of its peers. The special symbols of the slot are wild and scatter (mouse). Wild substitutes for all regular elements, while 3 or more scatters activate the free spins round. During FS, you will see other two special symbols (X, ?). Each has its meaning.

Theme
Stack em slot - paytable

Mobile Compatibility

Mobile Compatibility
Hacksaw Gaming releases the flagship Stack ‘Em slot in 2021. The developer built the game on HTML5 technology, making it compatible with mobile devices. Slot’s UI is fully adaptive so that you can play comfortably from both smartphones and tablets. Tap-tap and the game is running! Use your device’s screen to change the game’s settings, like enabling turbo spin. The mobile version supports every function and animation and doesn’t use many resources.

About Hacksaw Gaming

Hacksaw Gaming is a new innovative provider with unique gaming content. The company was established in 2018, and its first release was the Stack’ Em online slot. What a debut!

Hacksaw’s slots stand out from others because of their brave gameplay and unique storytelling. Take, for example, the Hand of Anubis online slot with its dark theme and ominous Ancient Egypt decorations. The company has a lot of talented mathematicians and likes to experiment with its content. And you can see it from games like Cubes or Cubes 2.0. The latter has an 11x11 grid, probably the biggest in the whole industry.

And the most shocking part about Hacksaw is the size of its portfolio. They have already produced more than 100 titles, including scratch cards and instant games.

Bonus Rounds & Free Spins

8.3 

Stack ‘Em is looking fun and is also very fun to play. Let’s check the main features of the slot.

Multipliers

During the base game, you can multiply your winnings. To be precise, you will be getting an additional multiplier after each successful spin.

You can see multipliers below each reel of the slot. The value of these indexes equals the number of stacked winning symbols on each reel. Moreover, all winnings are multiplied by the overall value of all indexes. So, if you have 1x, 3x, and 2x below reels, the total value will be 6x. A multiplier is active until the end of the winning spin.

Free Spins

Catching 3 or more scatters on a grid activates the bonus round. For starters, the slot awards you 5 free spins. During this round, all winning symbols are counted. You can see the count above the grid in a special table. This count is your potential multiplier. If the “X” symbol connects with the winning line, the multiplier becomes active.

You can also catch an “?” symbol during FS. The mysterious element can give you different awards:

  • Additional multiplier to overall count (+1, +2, +5, +10, +25, +50)
  • Additional free games (2–5)
  • Multiply the total odds by 2x, 3x, 4x, or 5x

Bonus Buy

You can buy the bonus at the price of 129x of your initial bet.
Stack em slot - Bonus Buy

Stack ‘Em Demo Play

Slotsjudge gives every visitor a chance to enjoy the Stack ‘Em online slot for free. We’ve attached the demo version of the game. You are free of any manipulations like creating an account or depositing money. Just start the game, and we will award you with a renewable demo balance. You can play the Stack ‘Em online slot for free from a PC or mobile device. Use the free version of the game as your training ground. Learn the mechanics, payouts, and hidden opportunities of the game. And then use your experience for the money game.

Max Win

8.1 
The highest possible winning odds of the Stack ‘Em is 10,000x.
Getting a mega win is definitely possible in this online slot. And it’s true for both the base game and the bonus round. The cumulative multiplier can do wonders with your stake. At the same time, it’s important to remember that building a long winning cluster is not easy. You need to find the balance between patience and the consequences of down streaks. The luckiest players can win up to €1,000,000. And you can watch some of those big hits on YouTube.

Overall Rating

8.1
It’s one of the best works of Hacksaw Gaming up to date. Stack ‘Em is a unique and very fun online slot with a lot of potential. Every spin in this game matters and can bring some great wins. We also cannot ignore the graphics and the plot in general. It’s great fun to play Stack ‘Em, but it’s also important to remember its high volatility.
Hits
Fun and unique theme with main heroes
Cluster pay with additional multipliers
Interesting bonus round
Great potential for big wins
Misses
The slot can be streaky due to high variance

FAQ

Can I win the jackpot in this slot?

Stack ‘Em online slot doesn’t offer a jackpot, but you can win up to €1,000,000 here.

What is the price of the Bonus Buy feature?

The price of buying free games is 129x. It means you will pay €129 if your initial bet is €1.

How many free spins can I win?

After triggering the bonus, you will be awarded 5 free spins. But you can win additional free games after winning line.

What is the highest-paid symbol of the game?

The highest-paid symbol of the game is Thumbs Up, with the maximum multiplier of 200x (for 25 symbols).

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Ella Houghton
Ella Houghton
Expert in: News, Blog, Slot reviews, Payments
Ella is a professional content-writer with 8 years of experience in the casino sphere. She has broad knowledge of gambling related themes and is happy to share this with Slotsjudge.

2126 articles

Reviewed by Editor-in-Chief
Nikita Lukanenoks

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