"Gradius V is a Japanese-developed shoot 'em up video game published by Konami for the Sony PlayStation 2 video game console in 2004. Gradius V was largely developed under contract by the Treasure team responsible for Radiant Silvergun and Ikaruga, under supervision of Konami's internal development studio, KCET. The game is set predominantly in outer space, where players assume control of a fictional spaceship called Vic Viper through a continuously scrolling background depicting the territories of Bacterian - an evil empire which serves as the player's enemy." Source: Wikipedia, "Gradius_v," available under the CC-BY-SA License.