Released: 26 Sep 2022

Visit space to explore a new slot experience, where stacked reels are the centre of attention. The Space Stacks slot reminded me of playing roulette, where you set the bet by selecting chips and choosing the reels you would like to bet. You can also trigger one of the three bonus rounds, Astro, Flip and Apex, potentially winning up to 5,000x the stake.

Space Stacks Slot

Space Stacks Slot Review

As we all know, space-themed slots are not a novelty, but it is also fun when developers come up with new types of gameplay. We recently saw this with the creative Spaceman slot, and this Space Stacks slot is no different. Spiced up with interesting elements, it can deliver a great experience.

Table of Contents

  1. About Space Stacks Slot
  2. Design, Symbols, and Graphics
  3. RTP, Variance, and Payouts
  4. Gameplay and Features
  5. Our Verdict

About Space Stacks Slot

Push Gaming has made the Space Stacks slot with ten reels and ten rows. There are no classic paylines, but seven of the reels award Instant Prizes, and the other three can take you to bonus games. 

You can select the bet size by choosing chips and then clicking on the reels you want to bet. The first three reels have multipliers of 2, 2, 3, 5, 10, and 50, followed by Astro, Flip and Apex Bonus Block reels. The Max Block reel hides the maximum prize.

You can bet on all reels, with the minimum bet being 0.01 credits, and its maximum value may be from 10 to 100 credits, depending on the reel. Betting on a successful reel delivers a prize.

Design, Symbols and Graphics

Typical for a space slot, dark blue dominates the backdrop. Also, there are some light dots representing stars and bigger planets. The grid has symbols in different colours and grey blocks, which don’t fill the reel.

Space Stacks Slot

The game starts with hitting the spin button, and firstly the six Instart prizes may be increased by the Enhancement feature. The values may range from x2 to x1000, and different coloured symbols drop on the reel. 

Coloured symbols fall at the bottom and continue dropping on the grid until one or more reels have ten or more coloured symbols. If players bet on the successful reel, they win the corresponding prize.

RTP, Variance and Payouts for Space Stacks Slot

The highest RTP rate for the Space Stacks slot is 96.23%. However, other lower rates are also available for operators. Its high volatility brings less frequent rewards that are high in value, which was also the case during my gameplay. 

Ourvariance, volatility, and RTP guide better explain these terms, plus there is a maximum win potential of up to 5,000x the stake.

Gameplay and Features on Space Stacks Slot

This game was a new experience, but I managed to get some great prizes. You’ll find the explanation of the bonus rounds below.

Bonus Game Feature 

If you bet on Astro, Flip or Apex and win, you’ll start the corresponding bonus round.

  • Astro triggers a wheel with 32 segments and Instant Prizes of +2 to +1000, multipliers of x2 to x1000 and Collect segments. You can collect Instant Prizes and multipliers until you get the segments that contain the previous prizes.
  • In Flip, you play on a 6x6 board where you pick three tiles, each revealing an Instant Prize of 1x to 1000x the stake or a Rocket Symbol. The first Rocket you reveal gets you an x2 multiplier, and every following increases the win multiplier in the following manner, x2, x5, x10, or x100. Rockets don’t count as one of your three picks, so you can continue revealing Instant Prizes if you are left with more picks.
  • In Apex, it looks like in the base game, but here the six Instant Prize reels have values of 2, 3, 5, 7, 10, and 20. The Enhancement feature gives possible increases of x2 to x20. A filled column lets you collect the prize and if a second one fills, the prize multiplies the collected award. The process may repeat in case of more columns are filled. In the second full column, you get three lives and if no symbols land one is taken away, which repeats until the feature ends.

Space Stacks Slot Feature

Other Push Gaming Slots

Other Push Gaming slots you may also try and recommend are the Deadly 5 slot, the Mad Cars slot and the Fat Banker slot.

Slotswise Verdict

It is very nice for a change to see a slot where there is totally different gameplay on the grid with rows and reels. I like the part where you choose the reels you would like to bet on, and also, the bonus rounds may be pretty exciting and rewarding. Moreover, the maximum possible prize can reach up to 5,000x the stake.

Discover the Space Stacks slot by claiming a welcome offer right from this page and play at top-rated online casinos.

Key Features
  • ProviderPush Gaming
  • Reels10
  • Min Bet0.10
  • Max Payout5000.00x
  • RTP96.23
  • PaylinesTBC
  • Max Bet100.00
  • Bonus Rounds1
  • VarianceHigh
About The Author

Marta Dimitrov


Marta is a writer who adores creating comprehensive game reviews, news, and other iGaming content. She has played many online slots and understands well how they work. Furthermore, she always cares to bring the most important info, and explain game features concisely. Contact Marta @

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