999 is a text adventure game that follows the story of Junpei, a college student who finds himself involved in a deadly conspiracy. He and 9 others have been kidnapped and must play a series of deadly games to win their freedom... 

In Nine Hours players only have hours before Junpei and 8 other kidnapped victims are drowned. Numerology, music composition and logic puzzles are just a few of the 32 + obstacles that stand in the way of their freedom.

Then in 9 Persons Jumpei must uncover the mystery surrounding the lives of the captive characters and how their blurry pasts reveal a disturbing future.

Finally in 9 Doors each hostage is cursed with a digital watch that displays their special number. These numbers are the keys to unlocking the 9 doors. Jumpei must explore his surroundings for clues to unlock the next door by picking up and examining objects in the different environments.   Read more: http://ds.ign.com/objects/080/080555.html#ixzz116NrOOP4