Cluster Games are all the rage, almost as popular as Megaways games. Their playability on mobile, in particular, sees them regularly appear in the most popular online slots list in many a casino providers’ catalogues. What better series of online slots to enjoy Cluster Pays reboot than the Rainbow Riches franchise, which has scores of other titles to its name. The iconic Rainbow Riches Leprechaun returns as a game symbol, and to win in this game you must match symbols like him and others in clusters of five or more. With each win the game board expands to allow more symbols and more cluster wins before ultimately triggering the game’s bonus features. The lilting Irish folk tune that plays over the top increases an octave with each win – a lovely touch.

Pros & Cons

  • Good variety of Free Spins bonus features.
  • Superbly fun game play.
  • Awesome jackpot potential from a simple mobile game format.
  • Small initial game board.
  • Require six consecutive cascades to trigger the bonus game.
  • Re-Spin feature offers a bonus feature upgrade for a fee.

How to Play

Cluster Pays games revolve around matching symbols in groups – or clusters – to find wins. Rainbow Riches Cluster Magic requires a minimum of five matching symbols in order to find a winning combo. Like in Big Time Gaming’s Star Clusters Megaclusters slot, each win expands the reelcase to allow more symbols to cascade down and create further winning combinations. To set your bet level select the left or right arrows either side of your bet display. Once you are happy with your bet either press the large green spin button to set the cascades in motion or select the auto-play function beneath the spin button.


The low-paying symbols in Rainbow Riches Cluster Magic are a series of glistening Gems. This is a welcome departure from the standard 9s through Aces that were present in the original Rainbow Riches slot, as well as seemingly every other Rainbow Riches sequel following it. These lower-paying gems only pay x0.1 for landing five in a cluster – the minimum required to trigger a payout. The Toadstool and Shamrock offer x0.25 for five in a cluster, while the top-paying Leprechaun boasts a x1 payout and x250 for landing him in a cluster of 10 or more. The Pot of Gold Wild substitutes for all symbols, though doesn’t offer an additional payout when it completes combos.


The Free Spins feature offers three varieties, activated by expanding the game board to its full size from 4×4 to 8×8.

Bonus Name Bonus Explanation
Bonus Wheel

When the game board expands to 8×8 you receive 8 free spins and spin of the bonus wheel.

Persisting Wilds

When any Wilds land and complete winning combinations they stick on the reels to complete further wins. When they cease to complete winning combos they disappear.

Infinity Spins

Each winning free game awards an additional free game, up to a maximum of 250 free spins! Each winning cascade also increases a win multiplier by increments of x1.

Wild Rain

Each spin sends between 4-16 Wilds raining down onto the reels in set patterns. Four additional free games are awarded for every six winning cascades.


Before you start the bonus round, you have the option to respin the Bonus Wheel for a fee. However, there is no guarantee that the feature will be upgraded.

Rainbow Riches Cluster Magic Details

Developer Paylines Reels Min Bet Max Bet Min Coins Max Coins RTP(%) Jackpot Released
blank Cluster Pays 4-8 0.20 50 N/A N/A 96.34% 250,000 2020