Space Stacks

Excellent 9.6 / 10

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Space Stacks Free Demo Play

Developed by Push Gaming, Space Stacks slot is an innovative and playful production from the provider’s collection. Featuring an original 10-reel, 10-row grid, the game offers players a unique experience via various features.

The Best Online Casinos & Bonuses to Play Space Stacks for Real Money

Space Stacks - Slot Review

The Space Stacks game from publisher Push Gaming immerses users in the heart of the universe where mystery reigns supreme. The interface reveals a three-dimensional space and a configuration that is unusual compared to previous slots. First of all, the basic game has 10 reels, 7 of which award instant prizes. As for the other three, they lead to bonus games giving players the feeling of participating in a roulette game.

When it comes to betting, punters choose the amount of bets by selecting chips and clicking on the reels. The first six Instant Prize Block reels start with bet multiplier values of 2, 3, 5, 10 and 50 while the three Bonus reels are called Astro, Flip and Apex. The largest jackpot of 5,000 times the bet comes from the Max Block. In any case, players can bet on any reel since the minimum bet starts from 0.01 credits and the maximum from 10 to 100 credits.

After choosing the bets, the game round is triggered by pressing the spin button. During this sequence, it is possible to increase the value of the rewards via the corresponding function. The process can perform the addition of values from +2 to +1000 or activate multipliers from ×2 to ×1000. Subsequently, different symbols and tiles appear on the reels. These icons are placed on the grid until one or more of the reels fill up with 10 active symbols.

Space Stacks compared to 3 other similar slots

Slot nameMax. winRTPMin. betMax. bet
Space Stacks5,000x96.2%0.01 cr100 cr
Spaceman5,000x96.5%1 cr100 cr
Cygnus 250,000x94%$0.20$100
Space Invaders1,250x95%$0.20$200

How the game works

In the Space Stacks casino game, if the player bets on the Astro, Flip or Apex reels and wins, the bonus game in question is triggered. To begin with, the Astro reel activates an Instant Prize wheel with 32 segments. These segments contain Instant Prizes from +2 to +1,000, multipliers from ×2 to ×100 and a Collect segment. Players collect wins and multipliers until the wheel is placed on the segment.

In the Bonus Block Flip reel, a 6×6 game board appears on the screen inviting players to choose 3 of the tiles present. Each reveals a prize of 1× to 1,000× or a rocket symbol. The first rocket symbol initiates a ×2 multiplier and then each rocket maximizes the value of the total win multiplier. The payoff multipliers are ×2, ×5, ×10 or ×100.

Space Stacks base game

You can bet on whichever reels you like to in Space Stacks!

Finally, the Apex reel is similar to the basic game, but works in a different way. This time, the six instant prize reels come with initial values of 2, 3, 5, 7, 10 and 20. The upgrade feature kicks in boosting the multiplier from ×2 to ×20. When a column is full, its respective reward is collected. This also applies in the case of a second column. Each prize multiplies the amount of winnings and at the same time, two full columns activate three lives. On the other hand, landing one or more symbols resets the number of lives to 3. If there are no symbols, the spin removes one life and when all lives are gone, the feature ends. On the other hand, the feature ends once all columns are completely filled. In all, the winnings are multiplied by the bet with a value displayed on the screen.

PROs & CONs of Space Stacks


  • Very interesting & rare game play
  • Variety of ways to bet
  • 4 different mini bonuses to be won
  • Win up to 5,000x


  • Bonuses cannot be purchased

In conclusion, Push Gaming’s Space Stacks slot machine offers something different from other online slots. Before placing the bets, the game requires some thought by taking into account the statistics. It should be noted that the overall RTP is 96.23% and the volatility is still average. In the payout table, each of the ten columns shows specific values for players to choose from. In total, the largest payout is capped at 5,000 times the bet.

FAQs about Space Invaders

In this slot, you can bet on one or more of 10 columns. When the game starts, whichever stack reaches the 10th row grants a winning.

No, there is no such bonus here, but there are 3 other that are worth checking out!

Yes, you can! You can access the demo play of Space Stacks directly on the top of this webpage for free and without registration.

This bonus triggers a wheel with 32 parts and players can spin it to win multipliers or instant prizes.

Software Push Gaming
Slot Types Video Slots
Reels 10x10
Paylines None
Slot Game Features Bonus Wheel, Cash Prize, Game Modifiers, Multipliers
Min. Bet 0.01
Max. Bet 100
Slot Themes Outer Space, Space
Slot RTP 96.2%
devices Mobile versionTablet versionDesktop version
Space Stacks Slot by Push Gaming

Game Winnings and Payouts

Space Stacks 50 Prize Block Symbol

x10 = 63.764x


Space Stacks 10 Prize Block Symbol

x10 = 13.431x


Space Stacks 5 Prize Block Symbol

x10 = 6.800x


Space Stacks 3 Prize Block Symbol

x10 = 4.386x


Space Stacks 2 Prize Block Symbol

x10 = 2.705x


Space Stacks 2 blue Prize Block Symbol

x10 = 2.407x


Space Stacks Astro Symbol

x10 = 33.565x


Space Stacks Flip Symbol

x10 = 62.842x


Space Stacks Apex Symbol

x10 = 299.335x



About the author

Kate Ko

Kate Ko / Games editor

last updated

Kate joined CorrectCasinos' game team in the late 2021. She's here to find and review all new and upcoming slots titles, so you can just enjoy their free play.

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