Jak and Daxter: The Precursor Legacy is a 2001 platform video game developed by Naughty Dog and published by Sony Computer Entertainment for the PlayStation 2 (PS2). The player controls Jak, who sets out to reverse the transformation of his friend Daxter into an "ottsel", a fictional hybrid of an otter and a weasel. This quest eventually turns into an effort to stop a rogue sage from corrupting the world. The game takes place in a cohesive and non-linear world, allowing the player to freely explore interconnected areas.