Sony Computer Entertainment America has announced that Ratchet & Clank: Up Your Arsenal, the online-enabled third installment in the series, has hit stores. When the robotic supervillain Dr. Nefarious threatens to completely wipe out the galaxy, Ratchet and Clank must team up with former superhero Captain Quark and a mismatched group of space cadets known as the Q-Force to stop him. With 29 single-player locations, 20 weapons with five levels of upgrades each, seven state-of-the-art gadgets, plus massive online gameplay, Up Your Arsenal pushes the envelope to become the most expansive addition to the series yet.

"With more than four million fans of the Ratchet & Clank franchise, the implementation of online gameplay will appeal to a wider variety of players and attract more network 'adopters' to the PlayStation 2 online community -- the leader in online console gaming," promises Grady Hunt, senior producer, product development, Sony Computer Entertainment America. "By preserving the franchise's style and sense of humor, while incorporating online functionality, Insomniac Games has played a tremendous role in delivering a product that both hardcore and casual gamers will enjoy."

Ratchet & Clank: Up Your Arsenal is on shelves now for an MSRP of $39.99.