The film's 'future' dates itself with the "United Nations Space Agency" - which is infinitely hilarious - and on that front the script has a whimsy that lends it enough charm to be passable (anti-gravity paint!). Beautiful production design, too. But this frivolity backfires - our lead character is a world-class prick, laughing off the unintentional genocide of an entire alien civilization.
With a comedic tone (most prevalent before liftoff) and great special effects by Harryhausen, this lighthearted film has thrills and the spirit of Wells in tact even as it becomes underwhelming once they reach the lunar surface. It lacks a certain energy that comes and goes w/ Harryhausen's effects but it's a solid film to enjoy.