Crosmando: I remember this game on PS1, it wasn't an RTS but you could switch between controlling vehicles by pressing L2 or something, it also had buildings/terrain which turned transparent when you went behind them (like Syndicate Wars). Weird how you remember these things...
That's interesting, while I was aware that PS version was released in the same year, I didn't know (earlier) that it was different type of game. Even checked out of curiosity on mobygames - turns out that it even had slightly different title (WarGames: Defcon 1).
Kinda wished though that we could have some more info in intro, because I've got no idea where all those WOPR and NORAD forces came from and why first one is using robots and droids etc (didn't watch the movie).
It's a bit interesting case though, making in 1998 game based on 1983 movie (and RTS game, while most of those "movie-based" games are rather action-type).
There was a bit similar story with Dune 2000, while both PC and PS1 version were RTS games, the one for PS1 was on vastly different, 3D engine (slightly similar to this used in Emperor: Battle for Dune)