Spin 'Em Round! Slot by Playtech

Three prize wheels sit stacked down the right edge of the reels, and they are the reason to load this one up. It is one of Playtech's game-show slots, staged on a studio floor that glows purple and gold with neon tubing running the walls. A cash-stuffed money briefcase, a purple sports car and a jet ski stand in for the premium icons, with gold 10-through-Ace royals filling the rest.

The grid does something unusual. Reels run a variable three to five rows tall, so the number of ways to win changes from spin to spin, peaking at 3,125 when every reel stretches to full height. A Wild covers everything on the reels except the Bonus symbols.

Those Bonus symbols only land on one dedicated reel to the right. When they do, they light up and set the cash wheels spinning. The Prize Wheel pays up to eight cash amounts, each a multiple of your total bet. The Mega Prize Wheel does the same but climbs higher, up to around 200x. After that the Multiplier Wheel spins as many as four multipliers and applies them straight to the cash the other wheels landed on, and that is where the big results come from. The stacked wheel bonus is the only real event here.

And there's the catch. The Bonus reel triggers roughly once every 41 spins, so you grind through a long stretch of plain base game between hits. Royal and lifestyle line pays are modest, and with the wheels dormant there is not much on screen to hold you. What you are waiting on is that multiplier stack, which can turn a middling wheel result into the best payout of a session.