Push Gaming challenges players to explore the outer reaches of the cosmos in the studio’s latest slot title, Space Stacks


Out now




Space Stacks is a 10×10 reel game with six instant prize blocks, three bonus games and a max block and debuts Push’s Reelbets mechanic.




94.29 – 96.23 per cent


All symbols in this game come with a minimum payout, an average payout and an RTP attached. 

The blue ‘2’ symbol’s minimum payout is x2, with an average payout of x2.457. The RTP for this number is 96.39 per cent. Its purple counterpart comes with the same minimum payout but with an average of x2.759 and RTP of 96.35 per cent. 

Slightly higher is the ‘3’, which awards a minimum payout of x3, an average of x4.479 and an RTP of 96.33 per cent. The ‘5’ offers x5 minimum, average of x6.944 and an RTP of 96.31 per cent.

Going into the double digits, the game has a ‘10’ symbol, which offers a minimum of x10, an average of x13.706 and an RTP of 96.22 per cent. The final number symbol is the ‘50’ providing a minimum payout of x50, an average payout of x65.026 and an RTP of 96.13 per cent.

The game also comes with feature blocks. Similar to the instant prize boxes above, these come with an average payout and an RTP. 

Starting with the Astro, this comes with a x34.232 average payout and an RTP of 96.19 per cent. The Flip’s payout stands at 64.134 with an RTP of 96.17 per cent and the Apex has the highest average payout of x299.335 and an RTP of 96.09 per cent. 


Before the round commences, players have three different sets of chips which portray select values. Once the player selects the value they want, they then choose which aforementioned blocks to wager on. 

At the start of every new round, the six instant prize blocks may receive random upgrades that can turn even the smallest blocks into big wins.

Players that place a bet on a winning block will be awarded the instant prize for their bet amount or enter bonus games with the bet they collected.

Space Stacks also comes with the Apex bonus game, which similar to the base game, will upgrade random numbers that can be filled to claim as multipliers. The board will continue to stack blocks until two multipliers are collected, at which point players will have three lives remaining to collect further instant prizes.


James Marshall, CEO at Push Gaming, noted: “As a company Push Gaming has continually produced ground-breaking titles that truly subvert player’s expectations on what a slot can be.

“Space Stacks and the Reelbets mechanic demonstrate our drive to deliver slot enthusiasts a whole new way to play, and we’re absolutely delighted to be bringing such an exciting new feature to the market.

“It’s also about pushing the envelope, taking risks to offer something truly different to the industry, with an aim of entertaining players with new mechanics that can sit well in regulated markets.  

“Positioning betting options as a core gameplay feature while also combining a multitude of engaging bonuses for players to enjoy provides a fresh experience – we’re challenging ourselves to entertain players with game design with the goal of that being recognised and increasing engagement accordingly.”


To play a demo version of Space Stacks, click here.