Rotten

Rotten is a video slot by Hacksaw that uses a 6-reel, 5-row grid with 35 fixed paylines. The theme plunges players into a bleak, zombie apocalypse set in a deserted fairground, complete with foreboding visuals, undead characters, and a creepy atmosphere. The central mechanic is called SwitchSpins: when a Switch symbol lands, it triggers respins (from one to ten), during which certain symbols on the grid are replaced by either the top-paying zombie symbol or Wilds. If more Switch symbols appear during those respins, additional respins are granted and more symbols are added to the replacement pool. Two free spins bonus rounds are included: the Mad Scientist feature is triggered by landing three Mad Scientist scatters, awarding ten free spins and increasing the chance for SwitchSpins to occur. The Total Takeover mode is a more intense free spins round, triggered either from the base game or during the Mad Scientist round by getting three Total Takeover scatters. In Total Takeover, replaced symbols are saved between spins, allowing the grid to gradually fill with high-value symbols or Wilds, and extra free spins can be added via further Total Takeover scatters. A Wild symbol is present throughout, substituting for standard pay-symbols and rewarding its own payout when it appears in full sets. In many markets outside the UK, there is a Bonus Buy option enabling players to purchase direct access to features like Mad Scientist or Total Takeover, or play special versions of FeatureSpins for immediate action. The maximum possible win in Rotten reaches 10,000× the bet.

You can play it for real money.