From Wikipedia: Daxter is a platform video game developed by Ready at Dawn and published by Sony Computer Entertainment on the PlayStation Portable on March 14, 2006. A spin-off of the Jak and Daxter series, Daxter takes place during the 2-year timeskip occurring during the opening cutscene of Jak II; unlike the other installments of the franchise focusing primarily on Jak, the game focuses on the adventures of his sidekick Daxter while Jak is imprisoned.