9 hours 9 persons 9 doors

An originally Japanese puzzle oriented video game with an excellent storyline. It involves 9 people who are kidnapped by someone calling himself Zero and out on a ship. They are forced to play a game in which they had to solve puzzles in order to find the door with a number 9 which will lead to their escape. They have 9 hours to do so or the ship will sink. The first in the Zero Escape series.