The first game in the Zero Escape series, originally made as a standalone title "Nine Hours, Nine Persons, Nine Doors". The Zero Escape rebranding and alternative cover of the game were released alongside its sequel in the "Zero Escape: The Nonary Games".

This version features updated artwork, voice acting, the choice of novel and adventure mode's and the addition of the FLOW Chart, along with other changes to adapt the game for a single screen from the original's two screens.