The story is also determined by your choices, but it is not played in a chronological order, but separated into fragments that you can choose at will. The game is very story heavy, with the gameplay coming in room escape puzzles like the previous games, though called quests this time around. Welcome to Zero Time Dilemma, the third and final game in the critically acclaimed Zero Escape trilogy, following 999 and Virtue's Last Reward and set in between the two games, following both established and new characters.