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Star Clusters Slot Game

Star Clusters Cover Image

Star Clusters Slot Introduction

Rainbow-coloured jewels and stars drop from the heavens in the retro-inspired Star Clusters, a glittering gem of a online slot game that showcases engaging bonuses and features such as free spins, special symbols, win multipliers, alongside a brand-new engine called Megaclusters!

Star Clusters Game Details

RTP (Return to Player):
Min / Max Bet:
£0.20 / £15.00
Hit Rate:
1 in 3.8
Auto Play:
Diamonds per £:
Min. 300
Features Cascading Reels, Chain Multipliers, Collectibles & Meters, Expanding Reels, Free Spins, Free Spins Retrigger, Match Cluster, Multipliers, Special Symbols, Wilds

Star Clusters Slot Game Background

The Star Clusters online slot was released by Big Time Gaming on June 19th, 2020. The base game has a 4-reel, 4-row set-up plus a cluster pays system rather than the traditional pay lines. Although this isnt specifically one of the many jackpot slot games currently out there, it has a max potential payout which could reach 23,000x the stake. This is coupled with several exciting special features including win multipliers and an elaborate free spins bonus round that’s played on an 8x8 grid, which is discussed in more detail below. The piece de resistance is the slot’s Megaclusters engine, via which any symbol that forms part of a winning combination is then broken down into smaller symbols, creating further clusters.

Star Clusters Slot Game Design

So it’s safe to say that Big Time Gaming has created something truly special with this slot. Load up Star Clusters and you’re immediately shown the 4x4 game grid encased in what appears to be a 1980s-style tablet device complete with slider panels! Contained within the grid are the game’s plethora of luminous jewels and star symbols. Radiant orange beams emanate from behind the tablet and cover the whole background, making one wonder if it's not floating directly in front of the Sun; if there’s a primary colour, then orange is it. The musical score when not spinning the reels is mysterious and esoteric. Spin the reels, however, and it transforms into an upbeat funky 70s-style tune, adding to the retro feel of the slot. It adds wonderfully to the presentation and complements the action on the reels perfectly.

Star Clusters Slot Mobile

The Star Clusters slot is available on tablets and mobile devices such as Apple and Android, and of course, can also be played on desktop PCs. All that’s needed is a stable internet connection and the Lottomart Games site open.

Star Clusters Slot Symbols

Paying symbols

The lower paying symbols - comprising gems of every shape and size, are colourful, elaborately detailed, and of course, fit the retro theme to a tee. Of these, the turquoise, yellow, and orange gems have the lowest payout of between 10x - 20x the stake for landing 25+ symbols on the reels. Next up are the green, blue, red, and purple gems, and these all have a payout of 50x for the same.

Wild symbols

The game also has two Wild symbols. The first is represented by a rainbow-coloured star and substitutes for all other symbols in-game apart from the Gold Wild, itself represented by a gold star with a rainbow-coloured background. The Gold Wild symbol has a couple of functions. First, it substitutes for all the other ones in the game, and two can appear on the reels at the same time. Second, should a Gold Wild symbol form part of a cluster, then a multiplier is applied to the win. This starts at 1x and increases by a factor of 1 whenever one or more Gold Wild symbols form a part of a cluster.

We’re sure you’ll agree that these are not the average run-of-the-mill symbols you find in other slots!

Star Clusters Slot Bonus Features

This online casino game includes several bonus features, all of which are discussed below.


Thanks to the Megaclusters engine, any symbol in a winning cluster is replaced by 4 smaller symbols. Should these smaller symbols form part of a cluster win, any symbols of the same size collapse downwards, and new symbols drop in from the top of the screen to fill any available positions on the grid. Reactions, as these are called, continue until there are no more wins. In theory, this means that should all regular-sized symbols in the 4x4 grid be replaced by the 4 smaller-sized symbols at the same time, you could have a total of 64 symbols on screen!

Free Spins Feature

The Free Spins feature is triggered by landing 5 consecutive reactions on the reels, and 5 reactions = 5 free spins. Any reactions over and above the initial 5 will grant an extra free spin, 1 per extra reaction. As an additional bonus, any Gold Wild multiplier from the base game gets pulled over into the free spins round. An additional 2 free spins are awarded every time the Gold Wild multiplier reaches a multiple of 10.

The Free Spins feature itself takes place on an expanded 8x8 grid, and the Megaclusters engine is active here too, so any symbols in a winning cluster are broken down into 4 smaller symbols. Should all 64 regular-sized symbols on the reels be replaced by 4 smaller-sized symbols, you’d be looking at a whopping 256 symbols in play on the grid! Factor in Gold Wilds which work as they do in the base game) and Gold Wild multipliers, and you could be looking at a possible payout of 23,000x the stake!

Star Clusters Slot Summary

Big Time Gaming pulled out all the stops and created a potential behemoth with Star Clusters thanks to the innovative Megaclusters engine! If you like this title and want to see what other Megaclusters slots BTG have produced, you can check out the acclaimed developer's Cyberslot Megaclusters. If the cosmic style of graphics that are on display are much to your liking, then you could potentially check out the similar Starburst slot.

Other Slots from Big Time Gaming

Want to see other titles we have on-site? Check out these other slots from Big Time Gaming:

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Safer Gaming

This is a real money gambling site. Please always keep your play safe and fun and only bet what you can afford.

Star Clusters Slot at Lottomart Games

A radiant world of colourful gems awaits in Star Clusters from Big Time Gaming! If you are a new Lottomart UK customer, you can access our generous welcome bonus, which will grant you some extra gaming funds. New customers can get a 100% deposit match bonus up to £100! 18+, terms apply. If you join and deposit £100, we will give you another £100 in bonus funds to play around with!

£10 min deposit. £100 max match. 50x wagering. Game eligibility & contributions vary. 10p to £5 bet range. £500 max redemption. New players only. Limited time offer. Valid 7 days. Terms apply.

View full 100% Games Welcome Match Deposit Offer Terms and Conditions →


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