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Star Clusters Megaclusters Online Slot Machine – Free Play & Review

Big Time Gaming might have a reputation for innovation, and they do have some of the more impressive game mechanics around, but when it comes to story telling and graphics, it’s definitely not a strength of theirs. This is true in Star Clusters Megaclusters as well, a game which uses gemstones as symbols, and nothing else. It’s not trying to tell a story, or even look good, but this type of look has been working great for BTG, so perhaps a good story isn’t necessary when you have innovation on your side.

As I mentioned, the symbols are just gemstones, though colored in different ways (red, green, teal, blue, yellow, orange, purple). The shapes are also different, but that’s pretty much it for the things that add spice to the game’s design.


The name of the developer that’s giving us this slot machine, is Big Time Gaming. Recognized for some of the more innovative high volatility slots available today, they’ve invented the Megaways system, and now they’re giving us yet another new mechanic, the Megaclusters. The first one changed the online slot machine industry, so we will see now if the new Megaclusters will have a similar impact.

Basic Information

Big Time Gaming
Free Spins
Wild Symbol
Special Bonus Game
Online & Mobile
Star Clusters Megaclusters screenshot 1
Star Clusters Megaclusters screenshot 2

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How To Play It

$0.20 to $20, it’s the full range available when setting up the wager, and it gives you all potential combinations in exchange, nothing is left out when going for a smaller value.

The system used in this slot relies on clusters of symbols, a minimum of 5 being needed next to each other, to get you paid. As many as 25+ symbols are needed to get the biggest rewards though.

You start off with a game area which has only 16 symbols, or Megaclusters, arranged in a 4×4 system. When a cluster forms, all winning symbols are replaced with 4 smaller symbols, and so the game area expands for the cascading reels mechanic that follows. You get a bigger number of symbols per reel as a result, and more ways to win. Once the cascading reels mechanic stops getting you paid and boosting the game area, the number of symbols resets back to the original 4×4.

Special Features

As I mentioned above, the Megaclusters system is new for Big Time Gaming, and it’s already looking like it will have a huge impact on the industry, same as the Megaways one. Rather than get the winning symbols immediately, you keep boosting the area with more potential clusters when you’re lucky enough to form wins. The potential for wins is still huge, and in fact they’ve announced that up to 23,960x the stake can be paid.

Several features have also been implemented in this case, and the Star Wilds are among those. You use them to replace the regular symbols, so they can be part of winning clusters. They are not replacements for Gold Wilds.

Gold Wilds can also show up on the reels, symbols that have multipliers to apply. They start at 1x, and go up by 1x for each time that a Gold Wild is part of a win. You can have at most two Gold Wilds present on the reels, at the same time.

The other feature delivers free spins, whenever 5+ reactions in a row occur in the base game. Multipliers carry over, if the Gold Wilds brought any that round. Retrigger the free spins when the Gold Wild Multiplier reaches 10x, and get 2 more rounds. The same happens for 20x, 30x, and so on.

Maximum Payouts

It’s a game with excellent potential, of up to 23,960x the stake, as good as what you’d get from a Megaways slot. Volatility is medium-high, while RTP is set to 96.54%.


Star Clusters Megaclusters looks like a fun game, innovative and the first of its kind, but I expect for plenty of other slots to be released in the future with this new mechanic.

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