Lost in Space (1965–1968)
3 user 1 critic

The Space Primevals 

On a planet where a primitive people are ruled by a computer, Doctor Smith goes against character and saves Major West's life.


Nathan Juran


Peter Packer, Irwin Allen (created by)




Episode complete credited cast:
Guy Williams ... Prof. John Robinson
June Lockhart ... Maureen Robinson
Mark Goddard ... Maj. Don West
Marta Kristen ... Judy Robinson
Bill Mumy ... Will Robinson (as Billy Mumy)
Angela Cartwright ... Penny Robinson
Jonathan Harris ... Dr. Zachary Smith
Arthur Batanides ... Rongah


On a planet where a primitive people are ruled by a computer, Doctor Smith goes against character and saves Major West's life.

Plot Summary | Add Synopsis


Not Rated | See all certifications »




Release Date:

4 October 1967 (USA) See more »

Company Credits

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Technical Specs


Sound Mix:

Mono (RCA Sound Recording)



Aspect Ratio:

1.33 : 1
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Did You Know?


When the chariot first pulls up to the rock near the volcano, there are no tread tracks behind it. When Professor Robinson meets Will there, two clear tracks are visible behind the vehicle even though it hasn't moved since being parked there. See more »


The Robot: [leading the Primevals in dance] Boom boom, boom boom, boom boom BOOM!
See more »

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User Reviews

This is a solid adventure, and my current #5-ranked on the season..
6 October 2012 | by jimbotc2006See all my reviews

"The Space Primevals"..always a very solid and long time highly liked installment. As of now, I have it as my #5-ranked episode of the season..ever, ever so slightly behind last week's "Hunter's Moon." Basically, the two are pretty much neck-and-neck. If "The Space Primevals" didn't have the 'sillier' unnecessary parts, such as the robot magic stuff, and if the episode had a more solid ending and finish, and not that 'silly' finish accompanied by the brand new Fred Steiner background music (which I highly dislike), "The Space Primevals" would have been as high as my #3-ranked of the season. As it is, I have it at #5..just short of #4.

Robert is very true that "The Space Primevals" has a Season One feel and look to it..chariot and all. I absolutely love the fine location shooting. That, and the prehistoric caveman idea, was not only excellent, but the best things about this story. I love it! As always, silly things take it down again though, just like last week. Stories this good should NOT infuse the sillier moments. I do NOT appreciate the mix. Either give me serious (very straight) B&W Season One, or give me the "LIS Lite" (Robert's term) fantasy-styles of Season Two. Both work fine. But, do not give me a good story and put silly things into it. It only accomplishes on bringing it down. The best of the Season Three episodes, all of them (think about it), are guilty of doing this. Like I said last week though, by this point in the series, it was totally unavoidable. Well, not really, but the production team seemed to think so.

Just like last week's "Hunter's Moon," this week's story is high, high adventure, and another most worthy example of the goodness and solidness of early Season Three. "The Space Primevals" is the episode that was filmed (and aired) right after "Hunter's Moon." I call it back-to-back solidness, in keeping where late Season Two left off (with more seriousness interjected into the series). It certainly does not last.

Like I said last week, I absolutely love the climactic fight scene in "Hunter's Moon"..one of my very favorite scenes of the whole shebang. That scene alone, and a slightly better ending, may be the specific reasons why I give the ever so slightly edge to "Hunter's Moon."

Peter Packer and Nathan Juran are back again..



SpacE I forgot to add that it is always a delight when Dr. Smith and Major West get teamed up together.

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