Potion of Madness

Play'n GO drew on Robert Louis Stevenson's Dr Jekyll and Mr Hyde for Potion of Madness, translating the doctor's transformation into cartoonish artwork set against a dim alleyway backdrop, with the reel area itself rendered in brighter colours than the scene surrounding it.

The grid runs five reels by three rows in the base game, paying across ten fixed lines, and volatility is rated a medium 6 out of 10. Betting ranges from 0.10 to 100 per spin, and the base return to player is 96.2%, though four lower configurations are also published for operators who choose them. Hit frequency lands around once in every 4.04 spins.

Low-value symbols run from 10 through Ace, followed by a newspaper, a pocket watch, a microscope and scientific apparatus as the mid-tier set, with the Dr J character ranked above them as the top-paying symbol. Five matching royals return between 2x and 3.5x the stake, while five of the higher symbols pay 4x to 10x. A wild, styled as Mr H, appears across every reel and substitutes for anything but the scatter, paying up to 30x for five in a row.

The Potion of Madness scatter symbol controls every bonus outcome, and how many land decides which one fires. A single scatter converts every Dr J symbol on the reels into a wild. Two scatters instead launch a respin sequence, turning Dr J symbols into sticky wilds that can expand vertically, one per reel, with respins continuing for as long as wilds keep landing or growing. Three scatters award five free spins and expand the grid to six rows, lifting the number of ways to win to forty; during these spins, every Dr J symbol automatically becomes a wild with the same chance to expand, and any wild that lands or grows sets off its own respin sequence, up to one per free spin.