Space Stacks Slot Review

How to Play

This 10-reels, 10-row online slot uses a multi-bet system instead of the conventional paylines. While we show you an extensive overview of the gaming process, we recommend trying out the demo version too. Your goal is to predict which blocks will likely stack up to the top by placing a bet on the predicted block.

The Chip display ranges between €0.01 to €100, allowing you to select the value of every chip you wish to bet. So, this Space Stacks slot game should be suitable for both conservative players and high-spending ones. After choosing a Chip, place your bet on one or more betting blocks by clicking on it. Every time you click on a particular block, the amount staked on it increases until the max limit for the bet that you’ve selected.

The “Bet on All” button simultaneously places your picked chip's value on all selected bet spots. Use the “Undo” button to remove the last bet placed or “Clear All” to remove every betting chip applied. Play several rounds in succession using the Autoplay feature. Skip unnecessary animations and play quickly using the Turbo mode or Quickplay buttons.

Symbols and Payouts

This online slot doesn’t employ any symbols. Instead, it uses seven instant prize blocks and three feature blocks. You can find out all the symbol information from the paytable. After placing a bet on any of the blocks, the instant reward or feature associated with it will payout when its respective column fills to the top. The total payout equals the multiplier of the bet staked on the column.

The instant prize blocks in the Space Stacks slot include:

• Blue (column 1) - pays 2x-2.457x.
• Purple (column 2) - rewards 2x-2.759x.
• Green (column 3) - worth 3x-4.479x.
• Pink (column 4) - it pays 5x-6.944x.
• Yellow (column 5) - gives out 10-13.706x.
• Red (column 6) - awards 50x-65.026x.

The MAX instant prize block (column 10) awards the most valuable regular payouts of up to 5000x your stake!

The gameplay also contains three feature blocks, namely:

• Astro (column 7), which rewards 34.232x your stake.
• Flip (column 8), which gives out 64.143x.
• Apex (column 9), which pays 299.335x.

Best Space Stacks Bonus Feature

While writing this Space Stacks slot review, we identified that the gameplay has some unique yet exciting features. First, the slot includes instant prize blocks that award prizes up to 5000x the bet. These instant prizes are a multiplier of the stake wagered on the chosen block.

The Astro feature is an instant bonus wheel with 32 segments. The segments can have bet multipliers, a collect section, and instant rewards. When the pointer settles on the "Collect" segment, the feature will end and payout the total accumulated instant prizes.

The Flip feature consists of a 6x6 matrix. You select tiles that can reveal instant bet multipliers (2x to 200x) or rocket symbols. Players get up to three picks that reduce by one when you unveil an instant prize. However, revealing a rocket will not reduce the number of choices remaining.

The last Space Stacks bonus mode is the Apex Enhancement game. After this feature ends, symbols will drop and fill the columns. Possible multiplier enhancement values range between 2x to 20x your current bet.

RTP & Volatility

We’ve tried to cover as many game details as possible in this Space Stacks slot review. But you can check out the game rules and paytable for more clarifications. The game’s volatility is medium, and the Space Stacks RTP varies between 94.29% to 96.23%.