Star Clusters Megaclusters Slot (Big Time Gaming)

The Star Clusters Megaclusters slot was the first game to use Big Time Gaming’s Megaclusters mechanic. Beginning on a 4x4 grid, a winning combination is formed when 5 or more matching symbols appear simultaneously,  horizontally or vertically adjacent (i.e. touching). The more matching symbols, the bigger the payout. If you want to know how the mechanic works, check out OLBG’s guide to Cluster Pays slots:

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Bets-wise, you can play Star Clusters Megaclusters from just 20p per spin. The maximum bet ranges up to £20. To change your bet, use the green arrows in the ‘Stake’ box to adjust accordingly. It’s the same in all Big Time Gaming slots. On desktop devices, you’ll find the arrows to the right of the reels or grid whilst it appears at the bottom on mobile/tablet devices. Outside the UK, there is an Autoplay function where you can initiate up to 100 auto spins with loss and single win limits.

The Star Clusters Megaclusters RTP rate is 96.54% which is a lot higher than the 96% average. Being an older game (released in August 2020), there is only RTP setting. The Star Clusters Megaclusters free play version and all demo play slots at OLBG use the highest return rate where possible.

Medium to high volatility (4/5), expect a winning cluster to land every 3.71 spins as the hit frequency rate is 26.95%. When it comes to win potential, the Star Clusters Megaclusters slot game can deliver 23,960 times bet max wins with 14,407 times bet wins in the base game.

Chris Taylor

The king of slots

Chris Taylor is an industry veteran originally from Gibraltar. Having worked in the online gambling industry since 2004, Chris loves slots and has reviewed over 10,000 online slot games. Running a slots-focused website for 13 years, Chris is the go-to guy for everything slots-related.

With a space/gemstone theme, the Star Clusters Megaclusters slot is rather simple visually. With a yellow backdrop, the game has a retro/80s feel combined with a techno/Moog synthesizer-inspired soundtrack. The game focuses on the grid which is edged in gold.

On the grid, you will come across 7 differently-coloured gemstones: turquoise, yellow, orange, green, blue, red and purple which look like the gems found in other Big Time Gaming slots such as Bonanza Megaways. The green, blue, red and purple gemstones all pay 50 times your total bet for 25 or more in a winning cluster.

Star Clusters Megaclusters comes with a regular Star Wild symbol. It substitutes for all symbols except the Gold Wild Multiplier. The latter also substitutes in a win and comes with a 1x multiplier that increases by 1 when part of a win (more details below). You’ll find a list of all symbol payouts and functions below:

• Turquoise/Yellow Gemstone: 5 to 25+ pays 0.1 to 10 x bet
• Orange Gemstone: 5 to 25+ pays 0.15 to 20 x bet
• Green Gemstone: 5 to 25+ pays 0.15 to 50 x bet
• Blue Gemstone: 5 to 25+ pays 0.2 to 50 x bet
• Red Gemstone: 5 to 25+ pays 0.4 to 50 x bet
• Purple Gemstone: 5 to 25+ pays 1 to 50 x bet
• Star Wild: Substitutes for all paying symbols
• Gold Wild Multiplier: Substitutes & comes with increasing multiplier

Star Clusters Megaclusters Mobile

BTG deploys HTML5 technology for all their slot games. This means Star Clusters Megaclusters is compatible with laptop, PC, mobile and tablet devices. Smartphone players can enjoy a unique Portrait Mode with the main buttons underneath the grid. It’s compatible with iOS and Android handsets.

Star Clusters Megaclusters is the first slot game to use the Megaclusters mechanic. With Reactions when you land a cluster win, winning symbols are replaced with 4 smaller symbols which leads to more symbols on the grid (up to 256). There is a Gold Wild Multiplier symbol which increases the multiplier when part of a win. In the free spins, you play on a bigger grid with Gold Wild Multipliers carried through and awarding extra free spins when they reach multiples of 10.

Reactions

When a winning cluster lands, the Reactions feature will be activated. Winning symbols then split and react to be replaced by 4 smaller symbols. Giving you another opportunity to form a winning cluster, a win will see symbols of the same size above them collapse downwards with new symbols dropping in from above to fill the positions on the grid.

Reactions continue until no more new winning clusters appear. This feature is found in many slot games, most noticeably in Megaways slots (which were invented by Big Time Gaming).

Gold Wild Multiplier

Look out for the Gold Wild Multiplier symbol: it’s a multi-coloured star with a 1x multiplier attached. When 1 or more Gold Wild Multiplier symbols substitute in a win, the Gold Wild Multiplier feature activates. Up to 2 Gold Wild Multipliers can appear on the grid at any one time.

The 1x multiplier increases by 1 each time and continues to grow as long as Gold Wild Multipliers are part of winning clusters. The multiplier values reset at the beginning of each spin unless you trigger the Free Spins feature (more details below).

The Gold Wild Multiplier resets at the end of each spin unless the Free Spins feature is activated. Up to 2 Gold Wilds can appear on any spin/reaction.

Free Spins 

Star Clusters Megaclusters comes with the obligatory Free Spins feature. With no Scatter or Bonus symbols, it’s triggered when 5 or more Reactions occur in the base game. 2 free spins are awarded plus 1 extra free spin for each Reaction beyond the 5^th (i.e. 7 Reactions = 4 free spins).

If you trigger the feature with a Gold Wild Multiplier, it’s carried over from the triggering spin into the Free Spins feature. When the Gold Wild Multiplier reaches a multiple of 10, an extra 2 free spins will be awarded.

More importantly, the free spins begin on an 8x8 grid with 64 symbol positions. Reactions will lead to symbols splitting which can see the grid reach up to 16x16 in size with 256 reel positions (or Megaclusters).

The Star Clusters Megaclusters slot was the first game to use the Megaclusters mechanic. Beginning on a 4x4 grid with 16 symbol positions, Big Time Gaming has flipped the Cluster Pays concept on its head as Reactions lead to winning symbols replaced by 4 smaller ones. This leads to a bigger grid and more symbols which in turn can lead to bigger and more winning clusters.

The most important symbol in the game is the Gold Wild Multiplier which begins with a 1x multiplier. When part of a winning cluster, the multiplier increases by 1 and continues to grow as long as you get a win involving a Gold Wild Multiplier symbol.

If you manage to land 5 successive wins/Reactions, the Free Spins feature is triggered. Gold Wild Multiplier symbols increase your chances of winning so it’s quite likely the current Gold Wild Multiplier values will be carried through into the free spins. When the Gold Wild Multiplier reaches multiples of 10, you’ll get another 2 free spins each time.

With a high 96.54% RTP rate, Star Clusters Megaclusters comes with 23,960 times bet max wins which can be achieved on a free spin. The mechanic is certainly different to standard Cluster Pays slots with Big Time Gaming pushing the traditional concept further.

One of Big Time Gaming’s most popular slot games, BTG plans to release a sequel, Star Clusters 2, in 2025 (according to OLBG’s Q&A interview with Big Time Gaming’s CEO Nik Robinson).

If you like the concept, Big Time Gaming has released more Megaclusters slots: Cyberslot Megaclusters, Diamond Fruits Megaclusters, Millionaire Rush and Vegas Rush.

Relax Gaming were the first slot provider to license the mechanic with Kulster Krystals Megaclusters. If you like the theme, it resembles Starburst and Starburst Galaxy (both by NetEnt) in my opinion.

The Star Clusters Megaclusters slot review was written by Chris Taylor from our OLBG Expert team who has written over 10,000 slot game reviews in an iGaming career spanning over 2 decades. It was then verified/checked by Jenny Mason, our prime Slot reviewer who has 17+ years working in online gambling, top UK brands. 

Jenny Mason

Slots content manager

Jenny Mason has more than 17 years of experience in the online gambling industry and has worked for some of the UK’s top betting brands. She started at OLBG in 2014 and her role involves creating great content and looking after the marketing activity. Jenny is knowledgeable in all areas of online sports betting and has an interest in slots and bingo.