Radirgy is a vertical scrolling shoot 'em up game that originally debuted as an arcade title in 2005 and gained popularity with its unique catchphrase “toon pop radio wave shoot ’em up.” Radirgy 2 is an evolved version of the original game labeled "the radio wave shoot 'em up re-proposed." The player ship called "Murasame" which evolves in different ways to assist the player throughout the game.