Space Stacks (Push Gaming) Slot Review

Space Stacks: Slot Overview 

In a saturated market of online slots, few games dare to venture off the beaten path as boldly as Space Stacks by Push Gaming, released on October 26, 2022. This cosmic creation isn’t just a slot—it’s an entirely new gambling experience built around the concept of ReelBets, a mechanic that replaces spinning reels with wagered columns, each representing a unique outcome. 

Rather than pressing spin and hoping for clusters or paylines, players place bets on individual blocks or “stacks” and hope their chosen columns fill up before the others. With ten reels, seven Instant Prize columns, and three bonus feature blocks (Astro, Flip, and Apex), the game borrows from elements of roulette, board games, and wheel-of-fortune to deliver a hybrid that sits somewhere between a slot, a minigame, and a gamble fest. 

With a maximum win of 5,000x, an RTP of 96.23%, and high volatility, Space Stacks is an offbeat journey into the unknown—ideal for players craving something unconventional, strategic, and totally cosmic.

Design and Graphics 

True to its name, Space Stacks is drenched in interstellar charm. The entire visual package is bright, bold, and unmistakably space-themed. The background features swirling galaxies, planets, and neon starscapes that give players the sensation of gambling at the edge of the universe.

The grid itself is laid out in a clean 10×10 format, with a sharp visual interface that places player bets at the base of the reels. Each reel is color-coded, topped with symbols representing either Instant Prize values (2x to 50x) or bonus game triggers. The MAX Block, sitting at the far right, is highlighted with a fiery red glow, reinforcing its 5,000x jackpot allure. 

Animations are smooth and responsive, with symbols dropping into place like falling tiles from a retro arcade machine. Whether it’s the glowing stack builds or spinning Astro wheel, the design is futuristic yet playful, offering an intuitive visual language even for newcomers.

Gameplay Mechanics 

This is where Space Stacks truly separates itself from traditional slots. Instead of spinning reels and paylines, players choose which columns (reels) to bet on before each round. 

Here’s how it works: 

There are 10 vertical reels. 

Seven reels offer Instant Prizes (2x, 3x, 5x, 10x, 50x, and the MAX 5,000x). 

Three reels trigger bonus features (Astro, Flip, Apex). 

Players can bet on any combination of these reels, with the ability to choose how much to wager on each. This mechanic adds a layer of strategy, as players must decide whether to spread their bets for safety or go all-in on a high-risk, high-reward column. 

Once bets are placed: 

The game triggers the Enhancement feature, which can increase prize values or apply multipliers (from x2 to x100). 

Tiles start dropping into the grid. Some are colored symbols, while others are blockers. 

If a reel fills with 10 active symbols before the others, that reel is declared the winner—and the bet on it pays out. 

The uniqueness lies in how ReelBets allow tactical decision-making before each round, making Space Stacks feel like an evolving puzzle instead of a typical spin-and-win affair.

Sound and Music 

Space Stacks comes with a suitably spacey soundtrack, blending ambient cosmic tones with arcade-style beeps and win jingles. The sound design supports the game’s sci-fi theme with synthesized rhythms that build suspense as stacks grow, and celebratory chimes when prizes hit. 

During the bonus rounds, especially the Astro Wheel, the music ramps up dramatically to match the rising tension, emulating game shows or wheel-spinning TV formats. It’s an effective auditory design that enhances gameplay without becoming repetitive or intrusive.

Bonus Features 

The three bonus blocks—Astro, Flip, and Apex—are what turn Space Stacks from interesting to extraordinary. 

Astro 

Triggers a wheel with 32 segments. 

Segments award Instant Prizes (+2 to +1,000) or multipliers (x2 to x100). 

Spin continues until it lands on a Collect segment, ending the bonus. 

Multipliers apply cumulatively, allowing prizes to grow massively. 

Flip 

A 6×6 board is revealed. 

Players choose tiles that reveal Instant Prizes or Rocket symbols. 

First Rocket triggers an x2 win multiplier; subsequent rockets stack multipliers up to x100. 

The round ends only when players run out of picks. 

Apex 

Functions like the base game with enhancements. 

Six columns with Instant Prizes (2x to 20x) are filled. 

Each filled column multiplies previous wins. 

When two columns are filled, the player receives three lives. 

Landing new symbols resets lives; dead spins cost lives. 

Ends when all lives are gone or all columns are filled. 

Each bonus feature introduces its own mini-game, turning wins into extended experiences filled with suspense, multipliers, and clever interactions.

Betting Options and Payouts 

Players can stake as little as €0.01 on individual reels, with the total minimum bet set at €0.10 and the maximum at €100 per round. There’s full flexibility in how bets are distributed: some may go conservative, betting low across multiple reels, while others may focus large stakes on the MAX Block to chase the elusive 5,000x prize. 

Payout Breakdown: 

Instant Prizes: 2x to 50x. 

MAX Block: 5,000x. 

Bonus features (Astro, Flip, Apex): Variable—depend on RNG, multipliers, and collected segments. 

RTP: 96.23% (with detailed RTP breakdowns per column available in the info screen). 

This flexible betting structure means players can control their risk exposure while also adapting their strategy each round.

Conclusion 

Space Stacks is unlike anything else in Push Gaming’s portfolio—and that’s saying a lot. Where most slots follow familiar reels-and-paylines mechanics, this game throws out the rulebook and hands you chips to place on individual outcomes. It’s a bold, inventive direction that feels more like playing a strategy-based board game in a casino’s back room. 

For players bored of reels or craving something unconventional, Space Stacks offers a gamified, strategy-infused format where betting choices and odds tracking matter. While the maximum win of 5,000x may not rival the towering jackpots of other titles, it’s offset by the game’s depth and interaction. Players are no longer passive observers—they’re active participants shaping the outcome. 

With its colorful cosmic aesthetic, clever use of ReelBets, and three distinctive bonus rounds, Space Stacks is one of the most innovative releases of 2022. It may not be for everyone, but for those seeking an offbeat, strategic alternative to standard slots, this interstellar wager-warp is a standout.