Average puzzles but an amazing style
The gameplay suffers from a number of illogical puzzles and the capacity for the character to be killed, a positively archaic impediment to exploration even at time of release. All is (almost) forgiven, however, due to the brilliantly realised and detailed science fiction setting. Locations and characters ooze style, and the presentation of it's dystopic, Orwellian future is one of the finest in the adventure genre's catalogue.
Also notable is the work done on the game by graphic novel legend Dave Gibbons (artist on Alan Moore's Watchmen), who designed several of the in-game locations as well as a promotional comic book which shipped with some releases of the game.