weapons do the most damage to them. Enemies also use weapons with different attributes and therefore one can get certain types of armor that are resistant to attacks of a certain type. All of the weapons and grenades can be upgraded by picking up a certain amount of "Opt_Key" files (the amount varies from weapon to weapon). Because the game takes place in a computer program, the equipment and pickups are named with extensions much like in a conventional computer (for example ".arm" for weapons & armaments, ".dfn" for armor and defense items, ".med" for health pickups etc.). Reception Reception of the game among reviewers has been mixed. While it was praised as innovative and for having some of the best visuals on the PSP, it received criticism due to a lack of character development, poor enemy AI in the single-player mode, and bad controls. Despite the critics' mixed reviews, the game has gained a cult-following and is considered by many as the best FPS for the PSP console. Sequels A sequel, Coded Arms: Contagion, was released for the PlayStation Portable in 2007. A PlayStation 3 sequel was also planned under the working title Coded Arms: Assault, but was canceled. It was shown at 2006 E3. References External links Official site at Konami (English and Japanese) 2005 video games PlayStation Portable games PlayStation Portable-only games Konami franchises First-person shooters Science fiction video games Video games developed in Japan Video games set in the 21st century Multiplayer and single-player video games