Nemesis

Nemesis is a 1990 horizontally scrolling shooter video game developed and published by Konami for the Game Boy. It is part of the Gradius series. Similar to Taito's Sagaia, this game uses a once-international title for an earlier game in the series to represent a mostly original project. A sequel, Gradius: The Interstellar Assault, was released for the same platform in 1991. Both games were later rereleased through the Konami GB Collection series, where they are titled Gradius and Gradius II instead.