Rainbow Riches Midnight Magic Slot by Light & Wonder

This is the Rainbow Riches series moved to nightfall. The familiar 5x3 reels sit inside an ornate silver Celtic border, but the countryside behind them has gone dark: a full moon hangs over autumnal red trees, a faint rainbow arcs across a deep purple-violet sky, and a grinning leprechaun mascot with his lantern peeks from the logo. Below the grid a moonlit meadow stretches out, a pot of gold resting on the right. The symbols stay bright and cartoonish against that cool palette, gold-outlined royals alongside the golden horseshoe, the green clover-band hat, the harp, the red-spotted mushroom, a rainbow tile, and the green Leprechaun himself, who doubles as the Irish-luck wild and the top-paying picture symbol. Wild and Rainbow both pay from two of a kind; everything else needs three.

Three, four or five Bonus scatters award 10, 15 or 20 free spins, with nothing to retrigger once you're in. The round changes the math through a Fairy. During free spins the scatters are swapped for Fairy symbols, and whenever one lands it upgrades every visible picture symbol to the highest-paying picture currently on screen. If a Wild happens to be sitting on the reels at that moment, the upgrade goes all the way and turns the whole picture set into Wilds instead. That single rule is where the bigger hits come from, since one Fairy can rewrite a mediocre board into a grid of matching premiums or a wall of leprechauns. The Fairy itself then changes to match.

There's also a Super Dial toggle parked under the reels, off by default. Flip it on and your stake doubles, but the trigger loosens: now just two Bonus scatters spin the Super Dial wheel, which hands out 6, 8 or 10 free spins or a small cash prize worth one to five times your stake. It's an optional shortcut into the bonus rather than a guaranteed payout, and it may be missing in some jurisdictions. No buy button exists, so the scatters and that wheel are the only routes in. For all the fortune dressing, the engine underneath stays close to the classic Rainbow Riches base game, with the moonlit reskin and the Fairy symbol upgrade doing most of the work to set it apart.