Nemesis

Nemesis is a 1990 shoot ’em up video game developed and published by Konami for the Game Boy. It is part of the Gradius series. Nemesis retains the basic power-up meter commonly used in most Gradius games, but with the addition of multi-level missiles not present in the original Gradius. The game consists of only five stages, each with a unique core boss. Although it is also possible to access hidden bonus stages in which the player may collect 1-ups and score bonus cells. Like other Game Boy titles developed by Konami, the game presents the player with a stage selection screen before starting.