Gradius III

Gradius III (グラディウスIII 伝説から神話ヘ) is a side-scrolling arcade shooter released in 1989. It was ported to the Super NES in 1991, and later included in the Gradius III and IV compilation. It is considered one of the hardest Gradius games.

Story
The Bacterions are attacking again. This time, the leader Bacterion is using a powerful source known as Dark Force. The Dark Force can destroy anything in its path. So planet Gradius relys on the ship Vic Viper to deafeat the Bacterions once and for all.