Jak and Daxter: The Precursor Legacy is a 2001 open world platform video game developed by Naughty Dog and published by Sony Computer Entertainment for the Sony PlayStation 2 on December 3, 2001, as the first game of the Jak and Daxter series. The game follows protagonist Jak as he tries to help his friend Daxter after he is transformed into an ottsel, a fictional hybrid of an otter and a weasel. With the help of Samos the Sage, the pair learn that they must save their world from Gol and Maia Acheron, who plan to flood it with dark eco. The game offers a large range of missions and minigames as well as puzzles and platform elements that the player must complete to proceed.