The visual novel and puzzle video game 999: Nine Hours, Nine Persons, Nine Doors was released by Chunsoft for the Nintendo DS in Japan, marking the debut of the Zero Escape series.
999: Nine Hours, Nine Persons, Nine Doors was released in North America, bringing the game to a wider audience and gaining a cult following.
A remastered version of 999: Nine Hours, Nine Persons, Nine Doors, featuring updated graphics and new features, was released worldwide for modern platforms.