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There are seven instant prize columns with payouts ranging between 2x and 50x, or 5,000x for the single “MAX” instant prize block. These are the most common columns that will fill up, whilst the three bonus columns are much less likely to fill up to capacity. 

You can think of this setup as being analogous to the odds of hitting scatter symbols in a regular slot, with the exception that there are no “dead spins” in Space Stacks – you will always win something. However, more often than not, it will be less than the wager you have made to play the current round. The feature blocks are much more exciting, so let’s move on to those now.

Fill up the ASTRO feature column, and you will soon find yourself looking at the ASTRO wheel – this 32-segment disc contains numerous cash prizes, bet multipliers, and the dreaded “collect” segment. The thing is, the paytable seems to suggest that there is only one collect segment when the truth of the matter is that there are just as many collect segments as there are valuable segments. 

So, the ASTRO feature had the highest RTP of the trio, yet playing it turned out to be disappointing. What about the FLIP feature, then?

If you successfully fill the column corresponding to this feature, you will be presented with a 6x6 grid of purple squares. Underneath these purple tiles lurk all kinds of cash prizes and several “rocket” symbols, which are undoubtedly your preferred target when picking squares from this grid. You only get three chances to uncover a prize from underneath a purple tile; however, if you manage to find a rocket, then your remaining picks will not be reduced.

The first time you find a rocket symbol, your current winnings will be multiplied by 2x. Find another rocket, and your multiplier will increase to 5x. You’ll need a miracle to locate all four of the rockets hidden on the grid. Still, if you find the third and fourth rocket symbols, congratulations – your multiplier now increases to 10x or 100x, respectively.

Finally, let’s talk about the APEX feature – this one has the lowest RTP of the three, yet my own experience suggests that this is where the game’s biggest wins can be found. Go figure! The feature begins with an enhancement stage which will boost the value of each of the games’ symbols by either 2x, 3x, 4x, 5x, 6x, 7x, 8x, 10x, 15x, or even 20x. 

Next, you will be presented with a new grid format which contains only the six instant prize blocks - yes, I did say six, as the MEGA block is missing from this bonus round for some reason. Talk about a cop out! The feature will progress with several free drops of symbols, and each time a column is filled to the top, you will win its associated prize, multiplied by the value achieved during the enhancement stage. 

Once two columns have been successfully filled, the bonus round will switch into a typical three-spin format, where you must land at least one new useful symbol on each drop to avoid losing a life. Lose three lives in a row, and the feature will end. If you are lucky, however, you may manage to fill all six columns e before running out of lives; I achieved this twice during the time I spent testing this game – roughly two hours – suggesting that it isn’t all that hard to achieve.

What can we say? Online slots do not come much more unique and innovative than this one – trust me, you have never played anything like it! I really enjoyed it myself, so I recommend you search this one out and give it a blast. 

My suggested strategy is to place a bet on all ten columns – pick a couple to place some big bets on, then just put something close to the minimum on the rest of the symbols. With your wagers configured, just keep hitting spin until you manage to hit one of the three bonus rounds and see what happens next!

I’m intrigued to see if this game will be successful for Push Gaming – the design and mechanics are entirely new and unique, and who knows, perhaps the developer could turn this system into the next Megaways style licensed slot machine schematic. I guess that only time will tell!

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