Meatballs chasing people on a moon base

Hi,

I saw this movie when I was a kid so I have no clear memories of it. It was between 1980-1984 when I saw it, in color (not 100% sure) and I saw it on TV (but was quite long so do not think it was a tv series).

Anyway, this is what I remember about the movie.

I think this was in a moon base (or Mars?). Somehow, aliens invade the base and start killing people. The aliens were kind of meatball shaped (more elongated than spherical) and moved not so fast.

Ok, I know this is a quite general description that fits many movies, but memory…

I remember myself on the edge from the very moment the aliens showed up inside the base. I hope someone can help me.

Thanks.

R

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