ビックバイパー
is a 1996 horizontal-scrolling shooter arcade game developed and published in Japan by Konami. It is the direct sequel to "Salamander" (1986) and the third game in the "Salamander" series, which itself is a spin-off of the "Gradius" franchise. Up to two players control two starships — the Vic Viper and the Super Cobra — as they must destroy the alien race Doom before they wipe out all of the planet Gradius. Gameplay involves shooting down enemies, collecting power-up items, and avoiding collision with projectiles or obstacles.