Emerald Isle Slot by Light & Wonder

This one runs two separate bonuses, and they trigger in completely different ways. The Rainbow is the scatter, and three or more of them set off 10 free games where every prize is tripled. Land more Rainbows during the round and it retriggers for another 10. Straightforward enough.

The second route is the interesting one. The Leprechaun is the wild, but he only kicks off the Bonus Round when he turns up on reel one and reel five in the same spin. That drops you into a pick-and-match game: you keep choosing until you reveal two equal prize amounts and take that prize. Some picks hide a multiplier of up to 5x, and if you uncover more than one they add together before multiplying your prize. The whole Bonus Round is capped at 500x the triggering bet, and it can land during the free games too.

The Leprechaun is no slouch as a regular symbol either. The red-bearded fellow in the green top hat substitutes for everything except the Rainbow and carries the top line pay, with five of him worth 6,000 coins. Below him sit a red-haired Irish colleen, an overflowing pot of gold and a four-leaf clover as the premiums, then Celtic-knot card royals in gold, red, purple, blue and green filling the lower rungs.

The setting is pure storybook Ireland. The grid sits on a dark green felt panel framed by a gold-and-vine border with pink flowers in the corners, all set against a misty lake and woodland with the gold logo arched on top. It plays across 20 fixed lines with no buy bonus and no jackpot, so the depth comes from juggling two unrelated triggers, scatters for the tripled spins and outer-reel wilds for the pick round.