There's not a scene here where Badham doesn't seem to know what he's doing, weaving a complex web of computerese, personalities and puzzles; the movie absorbs us on emotional and intellectual levels at the same time. And the ending, a moment of blinding and yet utterly elementary insight, is wonderful.

Roger Ebert

Chicago Sun-Times

An entertaining movie that, like a video game once played, tends to disappear from one's memory bank as soon as it's finished.

Vincent Canby

The New York Times