Mutagenes

Every win in Mutagenes needs three matching symbols across adjacent reels on a 6x4 grid running 4,096 ways, a setup Peter & Sons wraps in gene-splicing sci-fi horror with a 23% hit rate. Vats of specimens, blinking monitors and stray lab equipment build a woozy backdrop, drifting in open space to a driving electronic soundtrack.

Four card suits fill the low end of the paytable at 0.5x the stake for six of a kind, while syringes, disembodied hands, eyes in jars and brains in jars sit in the middle at 0.8x to 0.9x. Two character symbols top the table, worth 3x to 4x for a six-symbol line. A wild appears on every reel except the far left, works through both the base game and free spins, and covers anything other than the scatter.

Every win triggers a tumble: paying symbols clear off the grid, new ones drop in from above, and each successive tumble on the same spin adds +1 to a running multiplier that resets once the chain stops. Two randomised features sit on top of that: Infection swaps every mid or low-pay symbol on the board for a high-pay one, and Mutation seeds two or more reels with a batch of high-value symbols before revealing the rest of the grid around them. Either can fire in the base game or during free spins.

Six scatters award 15 free spins in Mutagenes, and inside the round the tumble multiplier carries over between spins instead of resetting, letting a long chain build serious value. Wilds can also expand to cover a full reel during the bonus, again everywhere but the leftmost position, though no scatters appear in the round so there's no route to a retrigger. Players who'd rather buy in outright can pay 120x the stake for 12 free spins directly.

RTP tops out at 96.3%, with three lower configurations available down to 86%, and the game plays at high volatility with a 12,000x maximum win. Stakes run from 0.10 to 50 per spin. Between the carrying multiplier and the two randomised upgrade features, the swings in Mutagenes tend to come from how long a single tumble chain runs rather than from any one fixed jackpot moment.