'Roki': Fairytale puzzles in a Swedish winter wonderland

In puzzle game Roki, players adventure through a Nordic fairytale world of trolls, ghosts and supernatural beings; on a mission to save their character's abducted brother. — Polygon Treehouse/dpa

A thick blanket of snow lies over the small village high in northern Sweden. Tove and her little brother Lars live here with their father.

Since a stroke of fate hit the family, the siblings are mostly on their own and their father sleeps most of the time.