Double Rainbow Slot Review

All seven symbols in Double Rainbow pay exactly the same. No colour is worth more than any other, which sounds like a design that has given up until you realise where the hierarchy actually comes from.

Each of the seven reels is tied to one rainbow colour, and a cloud landing on a reel lights it up and gives it a multiplier that applies to every win of that colour. So a red cluster is worth whatever red's reel has climbed to. The paytable is flat; the game builds its own values on top of it.

Light all seven and Full Rainbow triggers, multiplying every multiplier you have accumulated rather than adding to it. 7x6 cluster pays, 96.39%, medium volatility — though the ceiling is only 5,000x, half this studio's usual.

Sweets in the sky. The grid is filled with round gemstone candies in the seven rainbow colours, set against pale blue with fluffy white clouds drifting behind, and the whole thing sparkles rather more than strictly necessary.

What makes it work is that the interface tells the story. Rainbow arcs appear above the grid as reels are activated, and each column carries its current multiplier displayed above it, so you can see at a glance how far through the collection you are and which colours are worth chasing.

The clouds themselves are white and fluffy with their values written on them. It is family-friendly to the point of being wholesome, which for a studio that mostly makes games about gore and graffiti is quite a change of pace.

Medium volatility on a large cluster grid gives this a steady, unhurried rhythm. Clusters land often, most of them small, and the cascades keep boards turning over without much drama.

The interest is entirely in the collection. Watching four rainbow arcs light up above the grid and hunting for the missing three is a clear, readable objective, and because every cloud also buys spins, a productive stretch keeps extending itself rather than running down.

The frustration is that everything resets between rounds. Whatever you build has to be rebuilt from nothing next time, which on a game capped at 5,000x means the ceiling arrives sooner than the mechanics seem to promise. Full Rainbow with a x10 on a well-built board is a genuinely large result; anything short of that is pleasant rather than memorable.

A cheerful game with one genuinely good structural idea. Making all seven symbols pay identically and then generating the entire value hierarchy through which reels are lit turns the paytable into a canvas rather than a constraint, and it means a colour you were ignoring becomes the one you want the moment its cloud lands.

Full Rainbow multiplying everything you have built, instead of handing over a set prize, is the right way to reward a collection. It means finishing the set is worth exactly as much as the work you did getting there.

The 5,000x ceiling is the limitation, half what this studio normally offers, and the reels resetting every round means nothing carries forward. But at medium volatility on a big cluster grid with a clear objective in front of you, it is an easy game to spend an evening with.