Gradius (Japanese: グラディウス, Hepburn: Guradiusu) is a horizontally scrolling shoot 'em up video game developed and published by Konami. The first game in the Gradius series, it was originally released as a coin-operated arcade game in 1985. 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 purchase additional weapons. The arcade version of Gradius was released internationally outside Japan under the title of Nemesis, although subsequent home releases have the original title. Home versions were released for various platforms, such as the NES, the MSX home computer, and the PC Engine.
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