Ash has seen this movie.
High school student David Lightman has a talent for hacking. But while trying to hack into a computer system to play unreleased video games, he unwittingly taps into the Department of Defense's war computer and initiates a confrontation of global proportions. Together with his friend and a wizardly computer genius, David must race against time to outwit his opponent and prevent a nuclear Armageddon.
| David Lightman | Matthew Broderick |
| McKittrick | Dabney Coleman |
| Stephen Falken | John Wood |
| Jennifer | Ally Sheedy |
| General Beringer | Barry Corbin |
| Pat Healy | Juanin Clay |
| Cabot | Kent Williams |
| Watson | Dennis Lipscomb |
| Conley | Joe Dorsey |
| Richter | Irving Metzman |
| Beringer's Aide | Michael Ensign |
| Mr. Lightman | William Bogert |
| Mrs. Lightman | Susan Davis |
| Wigan | James Tolkan |
| Stockman | David Clover |
| Ayers | Drew Snyder |
| Corporal in the Infirmary | John Garber |
| Major Lem | Duncan Wilmore |
| Radar Analyst | Billy Ray Sharkey |
| Jerry | John Spencer |
| Steve | Michael Madsen |
| Commander | James Lemp |
| Deputy | Gary Bisig |
| Technician | Gary Sexton |
| Captain Knewt | Jason Bernard |
| Airman Fields | Frankie Hill |
| Sergeant | Jesse D. Goins |
| Mr. Liggett | Alan Blumenfeld |
| Boys Vice Principal | Len Lawson |
| Jim Sting | Maury Chaykin |
| Malvin | Eddie Deezen |
| Sgt. Schneider | Stephen Lee |
| Nurse in Infirmary | Lucinda Crosby |
| Airman | Stack Pierce |
| Guard | Art LaFleur |
| Flight Pilot Leader | Brad David |
| Vice Principal's Secretary | Martha Shaw |
| Boy in Arcade | Howie Allen |
| Travis | Michael Adams |
| Joshua | James Ackerman |
| Newscaster | Jim Harriott |
| Sgt. Sims | Tom Lawrence |
| Visitor | Frances E. Nealy |
| Major Ford | Charles Akins |
| Major Wenstin | Glenn Standifer |
| NORAD Officer | Edward Jahnke |
| Technician | Paul V. Picerni Jr. |
| NORAD Officer (uncredited) | William H. Macy |
