"Thunderstruck II" is a popular online slot game developed by Microgaming. It's a sequel to the original "Thunderstruck" slot and features Norse mythology themes with gods like Thor, Odin, Loki, and Valkyrie. The game includes various bonus features, free spins, and multipliers, making it quite engaging for players. Are you looking for tips on how to play, or do you have any specific questions about the game?