Gradius (グラディウス, Guradiusu, /ˈɡræd.i.əs/ GRAD-ee-əss or /ˈɡreɪ.di.əs/ GRAY-dee-əss) is a series of shooter (shoot'em up) video games, introduced in 1985, developed and published by Konami for a variety of portable, console and arcade platforms. In many games in the series, the player controls a ship known as the Vic Viper.