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999: 9 Hours, 9 Persons, 9 Doors Info
999 is a graphical text adventure with a sort of Saw-like premise. Nine people are trapped on a cruise ship and somehow wired to explode. A sadistic mastermind requires them to work together (but only in groups of up to five people) in order to open the nine doors that correspond to the nine passengers and escape from the rooms in which they're held.