Rainbow Riches Megaways Buy Pass Slot by Light & Wonder

The free spins are where this one earns its keep, and one rule does the heavy lifting. A win multiplier starts at x1 and climbs by one after every winning cascade, with no ceiling, and it holds for the whole round. So a long chain of tumbles compounds twice over, fresh symbols dropping in to extend the run while the multiplier keeps ratcheting up behind each one. Four gold Pot scatters on the main reels open the round with 12 spins, and every extra pot past four adds five more. Once you're inside, +1, +2 and +3 symbols on the top reel push the count higher.

The base game is the long-running Rainbow Riches brand fitted with Megaways reels under licence from Big Time Gaming. Six main reels plus a separate horizontal strip above the four middle ones swing the ways count anywhere from 324 up to 117,649, with a red counter at the bottom showing the live number each spin. Wins clear and refill rather than pay once: the main reels drop new symbols from above, the top reel slides in fresh ones from the right, and the cascading repeats until a spin lands nothing. The Wild only ever appears on that top reel, standing in for everything but the pot. There's also the Super Gem feature, which when its symbol hits the top reel turns every visible gem into one randomly picked colour before paying, occasionally lining up a whole grid of matches.

If waiting for four pots feels slow, you have three ways around it. Buy Pass hands you the free spins outright for 100x the stake. Take a Chance is a gamble instead, a fair wheel where the arrow landing in the green wins you the round for less than the full buy, or forfeits the stake if it misses. And the Bonus Bank lets you stash base-game wins to chip away at the purchase price before you commit.

The setting is pure Irish luck: chunky faceted gems in purple, blue, green and orange over stylised 10-J-Q-K-A royals, a bright cartoon meadow under a vivid rainbow, a thatched cottage on the left and a silver pot spilling gold coins on the right, the gold frame around the grid keeping it all squarely in fairground-leprechaun territory.