If you happen to be a fan of the Marvel Comics range of characters, as well as throwing yourself into the rather impressive shoes of one of the world’s most legendary protectors, then assuming the role of a Norse god might just be right up your street. Even better, you can now become the mighty Thor free of charge if you happen to own an iPhone, iPod touch or iPad, as Marvel Entertainment has made their fantastic and fast-paced Thor: Son of Asgard game free of charge on the App Store for a limited time.