War Games now seems extremely dated and this aspect gives the movie a strong element of nostalgia. These were the days when there was no Windows operating system, school kids played space invaders and East and West were only a technical mistake away from launching World War 3. Subsequent evidence has shown that there were actually a few occasions when mistakes almost did unleash nuclear war - such as the time when a bear scaled a fence at a US airbase during the Cuban Missile Crisis in 1962 and the wrong alarm was triggered. This constant fear was also captured in Nena's pop hit from 1984 called "99 Red Balloons".
As for the film, it's watchable and would definitely appeal more to youngsters (perhaps 8-12 years old). Subsequently, this makes the coarse language seem out of place and rather unnecessary. Despite the serious subject matter, this is an adventure tale from a time when the world was perhaps a much more straightforward place. Interfering with US military equipment would now lead to much more serious consequences. Even the ill-fated PanAm airline is mentioned in the movie (again, before it went under after the Lockerbie bombing).
Despite the dated feel some of the plot remains relevant in the modern era - such as artificial intelligence and, of course, nuclear weaponry (thousands of these missiles remain in service). A number of movies have been based around wayward technology (such as Terminator 2, Westworld etc) and a deep-rooted fear of science is still evident in society (e.g. in genetics). So, overall, this is an amusing 108 minutes, but not any kind of classic (it isn't trying to be).
The main extra is a commentary by the director and writers.