Cornerstone: The Song of Tyrim is an open-world action adventure with various puzzles and dynamic battles. The events of the game tell the story of the mysterious disappearance of all the majestic Viking warriors from their home island. Every day those who remain have it worse and worse. Even the neighboring kingdom, taking advantage of the current situation, is threatening war. But a simple village youth, Tyrim, decides to figure out the mystery that led to the disappearance of the main defenders of the island and sets off on a dangerous journey through the kingdom of Nygard.