Thor Infinity Reels

Where Thor Infinity Reels shows up on Yggdrasil's platform, this is the original release from developer ReelPlay itself, and while the two share the same Infinity Reels foundation, this version comes with its own paytable quirks worth knowing before you spin. The scene here is bleaker than divine — a 3x4 grid set into a stone frame, surrounded by discarded swords, drifting mist, pine trees and a starry sky, as though Thor recently finished a fight rather than started one.

The Infinity Reels format is the headline feature: winning combinations of five or more matching symbols on adjacent reels, starting from the left, add a new reel to the grid each time a win touches the far-right column. That growth continues indefinitely, with no fixed ceiling on how large the grid — or the accompanying multiplier — can get during a hot streak.

On the paytable, ten regular symbols sit alongside a wild and scatter. Card-suit royals fill the lower ranks, while thematic premiums — horns, shields, helmets and axes — pay between 0.15x and 0.25x the stake per symbol in a winning combination, adding up quickly once several symbols chain together across an expanded grid. Thor's wild substitutes freely to help complete those combinations.

RTP sits at 96.2% in its default configuration, a fair return by industry standards, climbing to 96.6% if the bonus buy option is used to jump straight into a feature. Volatility is rated high, matching the escalating nature of the Infinity Reels mechanic, and the confirmed maximum win is 6,055x the stake. Unusually for this kind of slot, ReelPlay has published a concrete hit frequency for this release: wins land on average once every 3.64 spins, giving a clearer sense of how often the reels connect compared to most Infinity Reels games, where that figure typically stays under wraps.

Stakes run from 20p/c up to $/€40 per spin, and the game plays on any device, though the compact 3x4 grid does mean mobile screens lose a bit of the surrounding artwork to keep the action front and centre.

Given the 1-in-3.64 hit rate and high volatility rating, expect a mix of regular smaller connections punctuated by the occasional reel-expansion run that turns into something much bigger. That balance, combined with the bonus buy route to a boosted 96.6% RTP, gives players a couple of different ways to approach a session depending on whether they'd rather grind toward a feature or pay to jump straight in.

Because this is a separate release from the Yggdrasil-hosted version of Thor Infinity Reels, it's worth trying both if you're a fan of the format — pull up the free demo at johnessyslots to compare how the two play out before choosing where to stake real money.