Thor vs Hercules

Thor vs Hercules brings Norse and Greek mythology together in the same arena for Pragmatic Play, an exclusive release available on selected casinos. It's a high-volatility mythology slot built around a 5x5 grid, expanding multiplier wilds, sticky free spins, and a max win of 15,000x the stake.

The two title characters do the heavy lifting as wild symbols. Both Thor and Hercules wilds can land on any reel, and whenever one contributes to a winning combination, it expands to cover the entire reel and picks up a random multiplier value anywhere from x2 up to x100. When more than one expanded wild reel lines up within the same winning combination, their multiplier values are added together before the payout is calculated — this is where the game's volatility really shows itself, since a couple of well-placed expanded wilds can turn a modest line win into something substantial.

Free spins trigger when three scatter symbols land on reels one, three and five, awarding 10 free spins. During the feature, any expanding wild that lands becomes sticky and stays in place for the rest of the round, so the reels can gradually fill up with expanded wild columns as the free spins progress — and with each new sticky wild, the odds of stacking several multipliers together in a single combination climb further.

Players who don't want to wait for a natural trigger have a choice of feature buy options split across two themed modes. The Olympus mode offers standard free spins for 75x the stake, or an enhanced version with a guaranteed expanding wild for 300x. The Asgard mode doubles the standard free spins cost to 150x, while its enhanced guaranteed-wild version is also priced at 300x — giving players a way to pick their entry cost and guarantee level depending on how the session's going.

On the numbers, Thor vs Hercules carries a 96.0% RTP, right at industry standard, and a self-rated volatility of high (5/5) — about as aggressive as the scale gets. That pairs naturally with the expanding multiplier mechanic, where a quiet base game can suddenly erupt once several sticky wilds stack up during free spins. The 15,000x max win reflects that ceiling, and stakes run from 10p/c up to $/€100 per spin.

Structurally, the expanding multiplier wild format with sticky reels during free spins will feel familiar to anyone who's spent time with mythology-themed slots before, but the mechanic still delivers when a session finally clicks and several full-reel wilds overlap for a combined multiplier hit.

If watching multiple expanded wild reels stack their multipliers together sounds like your kind of tension, Thor vs Hercules is worth sampling via the free demo at johnessyslots, where you can also weigh up the Olympus and Asgard feature buy prices before deciding how to approach a real-money session.