Based on the classic dystopian sci-fi short story by Harlan Ellison, this has some of the best writing you'll find in an old-school point-and-click adventure game. Ellison also provides some truly fantastic (especially for its time) voice acting as an insane AI.
The gameplay suffers from a number of glitches (though none that I saw made it un-beatable) and a very rigid, archaic game design. For example, a number of progression events will only occur after you say or do things that are completely unrelated to the event.
Unlike most adventure games of its time, there are multiple solutions to many puzzles...but usually only one "good" way. You'll have great difficulty getting the best ending (and yes, there are multiple endings) without a walkthrough. Of course, given the underlying subject matter, it's rather fitting that the (relatively) happy ending is elusive.
All that said, it's worth playing for fans of adventure games and especially for fans of the short story - as the game's plot is very different.