Gold Hit: Lucky Granny Slot by Playtech

The reels don't line up. Five columns of different heights stagger across a neon cocktail bar at night, a mirror-ball turning above rows of slot cabinets, while the old fruit-machine symbols (watermelon, plum, grapes, cherries, lemon, that golden bell) drop into the lopsided grid. Running the show is Lucky Granny herself: cat-eye shades, denim jacket, gold chains, a dollar-stuffed handbag in one hand and a pink cocktail in the other.

Coins are the point. Three types land and lock in place for at least three spins. Cash Prize Coins carry a set value, Special Prize Coins pay one of four fixed jackpots, and the Collect All Coin sweeps up every prize currently locked on the reels and hands you the combined total. Fill an entire reel with coins and you take everything sitting on it. That's a standard coin hold-and-win at heart, and the Granny is the wrinkle. On any spin she might add coins, add extra Bonus symbols, drop a Collect All Coin onto a reel, or multiply the coins already stuck to one. It fires at random, so you never know which favour is coming.

The four jackpots are fixed, not progressive: Mini 20x, Minor 50x, Major 200x and Mega 500x. Worth checking before you chase the top one, because a fixed Mega behaves nothing like a pooled prize that keeps climbing.

Three, four or five Bonus diamonds award 10, 12 or 15 free games, and coins stay locked for the whole round rather than dropping off each spin. Fill a reel during the bonus and a wheel spins to multiply that reel's prizes by up to x10, then every prize on screen pays when the round ends. Don't fancy the wait? The Gold Hit buy option puts you straight into the free games at three, four or five Bonus symbols, and an Extra Bet toggle nudges the feature odds up. Wilds cover everything except the Bonus diamonds and the coins.