WAR GAMES opens. Directed by John Badham ( taking over from a fired Martin Brest). Written by Lawrence Lasker and Walter F. Parkes. Spry, sharply written trailblazer for many a cyber/tech thriller to come with Matthew Broderick as fresh-faced computer geek who inadverdently hacks into a US military mainframe computer capable of launching a thermo-nuclear strike. With Ally Sheedy, Dabney Coleman and John Wood.