Gradius

Gradius is a 1985 horizontally scrolling shooter video game developed and published by Konami for arcades. It is the first installment in the Gradius series. The player maneuvers a spacecraft known as the Vic Viper that must defend itself from the various alien enemies. The game uses a power-up system called the "power meter", based upon collecting capsules to acquire additional weapons. The arcade version of Gradius was initially released internationally outside Japan under the title of Nemesis, but subsequent home releases have since used the original title.