John Romero's Daikatana, or simply Daikatana, is a first-person shooter video game developed by Ion Storm and published by Eidos Interactive on May 23, 2000 for Windows. Daikatana was later ported to the Nintendo 64 and a different version of the game was developed for the Game Boy Color, with a version for the PlayStation cancelled during development. The game is known as one of the major commercial failures of the video game industry.