'The water is rising, there are 9 doors and time is running out. Plot Note: This plot summary only contains the events of the Safe (also known as Zero Lost) ending and the True ending because the other endings aren't necessary for the True ending.

10.3 Zero Escape: The Nonary Games screenshots.

The players also attempt to find out why they were kidnapped.

The nine people are forced to participate in the ' Nonary Game', a deadly game which involves numerical bracelets, small bombs in each player's stomach that will detonate and kill them if they disobey, exploring the ship and solving escape-the-room puzzles in order to survive and escape before they drown in 9 hours. The cruise liner resembles the RMS Titanic, a ship which killed over 1500 in the early 20th century. The story follows Junpei who is abducted and placed aboard an empty, sinking cruise liner along with eight other people. The game is divided into two parts the 'visual novel' parts in which the story is told and decisions are made to lead to branching endings and the 'escape' parts which are escape-the-room puzzles that break up the novel sections. The game's genre is a mix of psychological horror, mystery, suspense, thriller, and science fiction, with slight elements of humor and comedy to fill in the gaps when the atmosphere isn't so dark. More details on these ports are below as well as on its own article. On March 24, 2017, Zero Escape: The Nonary Games, a bundle pack containing a remastered version of 999 with voice acting and a port of Virtue's Last Reward was released for the PlayStation Vita / PlayStation TV, PlayStation 4 and PC. The English version, titled Zero Escape: 9 Hours, 9 Persons, 9 Doors: The Novel, or simply 999: The Novel, was released on Maworldwide. The escape room puzzles were removed in favor of more focus on the visual novel aspects. The port was named 9 Hours 9 People 9 Doors HD Smart Sound Novel, as it was released as part of the Smart Sound Novel series. On May 29, 2013, the game was ported to iOS for iPhone and iPad and released in Japan.

The Nintendo DS version, the first version of the game, was developed by Chunsoft and published in Japan by Spike on December 10, 2009, and in North America by Aksys Games on November 16, 2010.

'Extreme Escape: Nine Hours, Nine Persons, Nine Doors'), also simply known as 999, is the first entry of the Zero Escape trilogy, the next two respectively being Virtue's Last Reward and Zero Time Dilemma. Zero Escape: Nine Hours, Nine Persons, Nine Doors (in Japan: 極限脱出 9時間9人9の扉 Kyokugendasshutsu Kuji Kunin Ku no Hi, lit.

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