Coin Storm Slot by Onlyplay

Coins land on reels 1 and 3 carrying values between x1 and x1,000. They don't pay anything on their own. The Collect coin, locked to the center reel, is the trigger - when it appears alongside value coins on both outer reels, everything gets swept into the Coin Storm bonus. But even without a full trigger, any coin that lands during normal play feeds into an accumulator displayed above the grid. That accumulator builds quietly and fires off a bonus round at random, which means the game keeps a running side bet with itself that you never paid for.

Inside the bonus, the Collect coin stays pinned to reel 2 for the duration. Three respins, reset to three each time a new coin drops. Every value coin and jackpot coin that appears gets absorbed into the Collect total - Mini at 25x, Minor at 50x, Major at 150x, Grand at 1,000x. The Grand alone accounts for nearly a fifth of the 5,216x max win ceiling, so the bonus math leans on jackpot density more than raw coin values. There's also a simpler collection event in the base game: if a Collect coin and a value coin land together on a regular spin, the value pays immediately without entering the bonus.

Deep purple storm clouds and forking lightning fill the background behind a gold-bordered grid. Oranges, watermelon slices, grapes, lemons, and a BAR symbol in red and gold - all rendered with thick outlines and saturated color against the dark reels. A few other OnlyPlay titles share the same compact coin-collect engine, and a Christmas reskin called Coin Storm X-Mas runs identical mechanics under a blue-and-snow palette.