Rainbow Riches Power Mix Slot by Light & Wonder

Most slots give you one set of reels. This one stacks four. The screen shows four separate 5x3 arrays lined up vertically, each running its own 10 paylines, and a single spin fires all of them at once. The trick is what happens before that spin. You assign one bonus to each of the four stacked arrays, picked from five options, and only the bonus you assigned can trigger in that array. Give all four the same one to chase it harder, or spread them out to cover every angle. A CHANGE BONUS button reopens the selection any time before you commit. Every bonus pays on the stake per array, which is your total stake split four ways, added on top of the line wins.

The five choices each play out differently. Road to Riches spins a step wheel that walks a multiplier highlight along a path, with five scatters skipping straight to the 500x top prize. Pots of Gold spins bronze, silver and gold pots and lets an arrow pick the winner. Cash Crop sends 50 coins spinning across multipliers and offers a Collect-or-Go-On choice that climbs through up to three levels of bigger numbers. Magic Toadstool gives you 3 picks from 24 mushrooms, with a Fairy uncovering more. And the Free Spins option hands out 10, 20 or 30 spins for 3, 4 or 5 scatters, the scatter doubling as a wild while it runs.

The signature feature sits outside all of that. A full Power Mix symbol covering reel 3 of any single array fires the Power Mix Bonus, and it can land at any time. The four arrays merge into one combined grid, base symbols vanish, and the respins begin. Each reel reveals a multiplier, a blank, or a modifier; anything that lands locks and respins. You start with 3 lives, and landing any value resets you back to 3, while a Rainbow modifier bumps that ceiling to 4. The round ends when lives run out or the grid fills completely, and a full grid pays the 12,500x maximum. The modifiers are the fun part: a Wishing Well sweeps every multiplier on the grid onto itself, a Fairy doubles random cash values and upgrades multipliers, and a Leprechaun turns its adjacent spaces into a persistent hot zone for the rest of the bonus. Classic Barcrest Irish-luck art throughout, leprechauns and clovers over a sunny green meadow with blue mountains behind, the kind of bright cartoon look the wider Irish slots shelf is built on.