Don't be put off by this film's rather juvenile title, this film like a football match is a game of two half's.
The first half (And my favourite.) tells the story of an Astronaut trying to stay alive in the hostile environment of Mars, although the Mars in this film has a breathable atmosphere.
A little realistic touch I like, is when the stranded astronaut sees his ship (which is full of supplies) still orbiting, presses the destruct button and it takes several seconds for the radio signal to reach the ship.
These days it probably would be instantaneous so as not to confuse the audience.
The Death Valley locations look a realistic backdrop for Mars too.
The second half is only slightly less imaginative then the first, as it tells the more conventional story of invading aliens and their slave labour workforce.
After escaping the Alien's clutches and rescuing one of the slave workers (The man friday character in the Defoe original.) they head for the polar ice cap.
The ending may be a bit ambiguous but I like it like that. Some films give the audience too many easy answers.
Overall opinion, a good updated retelling from a classic novel, which many scholars consider was the first novel publised in English.(1719)