From the publisher's website:

Every morning Odin sends his ravens, Huginn and Muninn, across the entire world to bring back news of what life is like on Earth. Naturally, after thousands of years, they've gotten a little competitive. Race through the landscape in opposite directions to be the first to return to Odin. Focus on speed, or enlist the help of the trickster god Loki to create shortcuts and hinder your opponent. Can you be certain Loki's changes won't help your opponent instead? There's only one way to find out!