The Thunderstruck and Thunderstruck II slot machines were developed by Microgaming, both of them being all about Norse mythology. The slots were released with a 5-year gap between them, so the sequel includes some of the more advanced features like 243 ways to win system, as an alternative to a payline-based betting model employed in Thunderstruck. The symbols depict Thor, Loki, Valkyrie, Thor’s Hammer, Thor’s Horn and other gods and divine accessories. The slots are packed with features and bonus rounds, including scatters, wilds, free spins, multipliers and other basic and advanced functionalities to add fun and keep you enthralled. Try this online slots for free without registration or download.