Considering the limited technology of the 1950's, this movie has stunning visual effects. The alien warships are beautiful to look at. The cobra like heat ray that extends from the ship is ominous.
The dialogue is typical corny 1950's jargon, and the science is questionable. Plus there is an annoying overuse of three, 3 ships in a pod, 3 pods in a unit, 3 eye lenses, 3 toes, 3 fingers, and even 3 blood cells clumped together. I also have to wonder why the scientists were not given a heavily armed escort back to the Science Institute if they were the last hope to rescue humanity.
My wife and I still laugh about and use one of the BEST life lessons to have EVER come come from a movie. It comes from the Mexican man who advises the other two men, "Don't mess around with something when you don't know what it is!" Unfortunately he caved to peer pressure and stepped in front the Martian warship only to be blasted into a pile of ash along with his companions.
These shortcomings aside, the movie is still billions (that's right, BILLIONS) of times better than the 2005 remake with Tom Cruise. There are three science fiction movies that I rate as classics that all science fiction fans should watch and own, The War of the Worlds (1953), The Day the Earth Stood Still (1951), and The Time Machine (1960).