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Star Clusters Megaclusters Slot Game | BTG Slots

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Game Provider: Big Time Gaming

RTP: 96.54%

Paylines: Cluster Pays

Min Bet: 0.2

Max Bet: 20

Progressive: No

Type: Video Slot

Theme: Gems

Volatility: High

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Star Clusters Megaclusters Slot Game

The Star Clusters Megaclusters online slot by Big Time Gaming introduces another innovative mechanic from this Australian developer: Megaclusters!

This combines cluster pays, splitting symbols and the cascading reels of BGT’s other great slot innovation, the Megaways mechanic.

Star Clusters Megaclusters slot game is played on a 4×4 grid, which expands to 16×16 in the free spins to land a total of 256 symbols. There’s also an unlimited increasing multiplier and a top potential prize worth 23960x the bet.

The return to player (RTP) of Star Cluster Megaclusters is a good 96.54%, and the game is medium to high volatility. And with such a high top prize, you might think that means payouts will be few and far between, but thanks to the great Megaclusters mechanic, which you can read about below, this isn’t the case.

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Game Features

Winning combinations are formed when five or more matching symbols land in a group. Whenever a winning combination is formed, all the winning symbols divide up into smaller random symbols. Any of these that are involved in a new win will disappear from the reels in a cascade feature. This continues until no new wins are formed.

There are two wilds, both star shapes, with one of them coloured gold. They both stand in for the paying symbols to help form line wins and remain on the reels as a smaller symbol after they have been involved in a win. But the gold wild comes with a win multiplier that starts at x1 and increases by +1 after every reaction win it is involved in. The multiplier resets between spins. Up to two gold wilds can be present on the grid at once.

The free spins bonus is triggered after the player has hit five consecutive wins. This gives the player two free spins on an expanded 16×16 grid, and one extra free spin is added for each win over the minimum 5 needed to trigger the round. The gold wild multiplier value from the triggering win is carried over into the free spins. And every time this reaches a value of 10, two more spins are added to the round.


  • Unique slots gameplay
  • Free spins with up to 256 symbols appearing on the grid
  • A potential top prize of 23960x


  • The graphics and theme are a bit boring
  • Free spins are hard to trigger
  • Limited betting range


Star Clusters Megaclusters has a slightly above-average payout percentage of 96.54%. Remember, this is a guideline and not a guarantee to each player. 

When five or more matching symbols land in a group to form a win, they break down into smaller symbols after it has been paid. If the smaller symbols are involved in a new win, they disappear from the reels and are replaced in a cascade feature. 

Yes, five Megacluster wins in a row will trigger the free spins.

The biggest potential payout the game can make is 23000x the bet. 


Chris GrandHead of Content

I’m an experienced casino review and news writer with years of knowledge on my back. The experience I’ve had online is essential for the casino reviews I write on this website, written in an easy-to-read format that readers can recognize and connect with.

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