MobyGames - Review, screenshots and credits. - http://www.mobygames.com/game/ratchet-clank-up-your-arsenal
GameFAQs - FAQs, cheats, reviews, game saves, and a message board. - http://www.gamefaqs.com/console/ps2/data/919902.html
Game Revolution - Review, by Johnny Liu: "It is the culmination of three years of hard work, an action game so well refined that it’s now clearly the best of its breed. Get your head out your arsenal and pick it up." [Grade: A-] - http://gr.bolt.com/games/ps2/action/ratchet_and_clank_up_yer_arsenal.htm