Unfocused film that can't quite decide if it wants to be a children's story (capitalizing on 'Lost in Space's robby the robot) or a sci-fi tale about a super computer and winds up failing in both endeavours. Mainly ruined by a terrible child performance by Richard Ever ('The 7th Voyage of Sinbad) who grates like nails on a chalkboard. The super computer idea was at least ahead of its time.
Poking fun of the unemotional behavior of scientists & mathematicians, this mix of fantasy (things are more or less aimed at children) and science fiction (covering staples issues such as AI, technology, & world control are present but glanced over) is a solid film to enjoy even if it's wrong to call it a "sequel" to Forbidden Planet. It's mixture of genres and tone is perplexing but it works.