Infective Wild

Infective Wild is a Halloween-themed slot from Pragmatic Play released October 2023, running on a 5x5, 40-payline grid. 96.09% RTP (operators may load 95.06% or 94.02% variants; the bonus buy carries 96.06%), high volatility (5/5), 5,000x maximum win. The central mechanic is the Infective Wild: when a wild lands adjacent to a Crow or Cat symbol — the two highest-paying regular icons — those symbols transform into additional wilds, triggering a chain reaction across the grid.

Free spins trigger on 3 scatter symbols landing on reels 1, 3, and 5 simultaneously. Rather than a fixed award, a 3x3 secondary panel spins, with each of its nine cells revealing 1, 2, or 3 additional free spins — a variable delivery of 8 to 24 total spins depending on panel outcome. During free spins, all wilds that land are sticky for the full duration of the round. The infective wild chain continues to fire on each spin, meaning a grid partially loaded with sticky wilds from earlier spins becomes exponentially denser with each new infection event.

The 25% base-game hit frequency is high for a 5/5 slot — roughly one winning spin in four — which makes the cold stretches feel less punishing than typical very-high-volatility PP releases. The Infective Wild chain rarely delivers a meaningful hit in the base game, but it fires frequently enough to confirm the mechanic is working. The real payoff is free spins with a sticky-wild-loaded grid developing over 15+ spins.

The 96.09% RTP at 5/5 volatility is the math trade-off: Infective Wild gives you a genuinely novel spreading mechanic and a more active base game than most catalog peers at this volatility class, but the house edge is slightly steeper than the 96.50% benchmark. Players who value mechanic novelty over pure return efficiency will find it worth the cost.

Verdict
An Infective Wild that spreads from Crows and Cats across the grid, sticking through free spins. Novel mechanic, active base game, 5,000x ceiling.