Fresh from licensing its Megaways game engine to just about every slot developer across the world, Big Time Gaming brings us Star Clusters, introducing Megaclusters™. The idea works as a mix of MegaWays games like Inspired’s Centurion Megaways slot and Cluster Pays games such as NetEnt’s Streetfighter II. For every cluster of five symbols or more you land on the 4×4 grid, those symbol clusters react to allow more symbols to pop in their place on the game board beneath them (these are called reactions).

These smaller symbols then react again when they form winning clusters, with a maximum total of 256 symbols available. It plays like a quick, fun mobile game with the rewards of an online slot. The best of both worlds.

Pros & Cons

  • Superb mix of instant and mobile slot play
  • Megacluster reactions make for multiple prizes.
  • Unlimited win multiplier.
  • Need to score multiple cluster wins in order to land big payouts.
  • Only 16 Mega Cluster symbols to start with.
  • Need to land Gold Star Wilds to start unlimited win multiplier.

How to Play

As Star Clusters is a Megacluster symbol matching game the aim of the game is to match symbols in clusters. A winning cluster must consist of five matching symbols. Match these symbols to create reactions, as you also must in other Megaways slots like Rainbow Riches Megaways from SG Digital. In those online slots symbols fall into their place when symbols react, but in Star Clusters Megaclusters the symbols react to reveal a smaller set of symbols beneath.

When these symbols react they too pop and disappear, then allowing more symbols to fall into their place. The maximum number of symbols in the space is 256, potentially filling the game screen with winning clusters of symbols. Select your stake using the arrows on the bet toggle and press the green Spin button to kick start the spins and reactions.


When Big Time Gaming launched Bonanza! Megaways it used glittering gems as the top paying symbols. The Megaclusters games use those same Gems as the game symbols, with turquoise, yellow, orange and green Gems forming the low-paying symbols and blue, red and purple Gems making up the top-payers. Rainbow Star Wilds substitute for all symbols as do Gold Star Wilds, but these also kick start a win multiplier sequence that starts at x1 and increases by 1 every time a Gold Star Wild completes a winning combo. This continues with no limit until no more winning combos react and then is reset back to x1.


Not only does Star Clusters offer consecutive wins and win multipliers but also includes Free Spins, though not in the form of a dedicated feature.

Bonus Name Bonus Explanation
Wild Win Multiplier

Each time a Gold Star Wild completes a win it kicks off a win multiplier sequence, which increases by 1 every time a win lands using a Gold Star Wild.

Free Spins

You are awarded two Free Spins when you land five reactions in the base game. Each reaction you score during the free spins awards another free spin. Any Gold Wild multipliers you land are carried over into the Free Spins feature.

Star Clusters Megaclusters Slot Details

Developer Paylines Reels Min Bet Max Bet Min Coins Max Coins RTP(%) Jackpot Released
blank MegaClusters 4 0.20 20.00 - - 96.54% 50,000 2020