Rainbow Riches Cluster Magic is an Irish-themed slot by Barcrest. It’s part of the long-running Rainbow Riches series, which has spanned a decade. As the name suggests, this is a Cluster Pays slot – one of the rare such additions to the series. Developed by Light & Wonder, the slot’s medium volatile math model and the Cluster Pays magic make for a very exciting experience.

Similar to the other slots in the series I’ve played so far, it features familiar symbols. The leprechaun is the main character, along with four-leaf clovers, mushrooms, and diamonds. Cascades represent the main action in the slot, breaking blockers and expanding the playing area to provide more winning ways. You start on a 4x4 grid, which can eventually double in size, which also triggers the free spins mode.

Persisting wilds, infinity games, and wild magic are the special features. It all combines for a truly magic experience, so it’s safe to say that Rainbow Riches Cluster Magic is one of the most enchanting slots in the series.

Rainbow Riches Cluster Magic starts as a 4x4 slot on a grid with 64 positions. The area around the main reel set is surrounded by blockers. You can break it open by landing wins, which grows the playing field. Five or more symbols are needed to pop a cluster with wilds stepping in to link wins.

Overall, the graphical quality matches the other slots in the RR series. The visuals are a bit more polished, and the cheery soundtrack and audio effects perfectly suit them. As for the layout, it’s easy to play the slot on any device, as the controls are beneath the reels and on the right side.

The first thing I did before I started playing the Rainbow Riches Cluster Magic slot was set my bet. You can choose between 20c and $50 per spin. The range is suitable for new and seasoned players. Once you get the reels rolling, you’ll be hoping to land 5 or more winning symbols to pop a cluster and open up the playing field. Unlike other Cluster Pays slots, there are wilds in this slot that link wins together.

As mentioned earlier, you initially start on a smaller 4x4 grid. After a winning combination, a cascade follows that provides new symbols in place of the ones used in a winning combination. This provides extra winning chances. The cascades will continue for as long as there are winning symbols on the grid. Each new cascade eliminates the blockers surrounding the main grid, increasing the number of ways to win.

The maximum is 8x8, which allows 64 symbols on the grid. There are no other special features in the base game apart from the cascades. However, you do get 3 special options in the bonus round, which starts after 6 consecutive wins.

Hit 6 consecutive winning spins, and you’ll open the playing field, which increases to 8x8 in size. There are no scatters – 6 consecutive cascades are what you need to receive 8 free spins. Before the bonus round begins, a wheel will pop up so you can spin it. It has 3 equal fields – a red, blue, and green one, which correspond to wild rain, infinity spins, and persisting wilds.

The bonus round starts with the feature you triggered on the wheel.

• Wild rain: 4-16 symbols are added to the reels
• Infinity spins: extra spins with a progressive win multiplier (starting at x1)
• Persisting wilds: adds 2 wilds on each winning cascade

The free spins are played on a full 8x8 grid, and since there are no scatters, you can’t retrigger it. Thanks to the special features, the bonus has great winning potential. Unfortunately, there’s no way to buy the bonus round.

When I started playing the Rainbow Riches Cluster Magic slot, it became clear to me that it’s a game that focuses solely on the bonus feature. But, for good measure, the developer has added winning clusters in all stages.

It didn’t take long to land 6 consecutive wins, thanks to the fact you need matching symbols anywhere on the grid. I got to the bonus round pretty early on and started it with infinity spins. It was a productive session, but it ended far too early in my experience. Retriggering the bonus round is possible only after another 6 consecutive cascades, which isn’t easy to land. 

The Rainbow Riches Cluster Magic slot has an RTP of 96.34%, which is solid for a medium-volatile slot game. You can land wins as high as 12,500x in the bonus round.

Rainbow Riches Cluster Magic is an innovative addition to the Rainbow Riches slot series. It’s not that groundbreaking, but it provides a much more fun experience than some of the classic Rainbow Riches slots. I liked the cascading mechanism and the bonus round with modifiers, which made for a unique experience. Overall, it was fun to play and a nice departure from the regular RR action.

If you like something different, you can try the original Rainbow Riches slot. Rainbow Riches Megaways is closer to Cluster Magic, although it focuses on an entirely different mechanic that might suit you better.