If you loved Altered, try The Man from Planet X
A bridge between a film you've already seen and one most people haven't. The Man from Planet X has roughly 3.0× fewer votes than Altered — it's a deeper cut, not a mainstream recommendation. Here's what they share, and what the second one does that the first one doesn't.
What they share
Theyboth carry the dread mood tag, and they sit in Horror / Science Fiction / Thriller territory. If that's the register that drew you to Altered, the second film will land in a comparable space — through a different lens.
dread
What The Man from Planet X is
Misty Scottish hills at dusk foghorn blaring. Scientists scan the sky for a rogue planet. This 50s sci-fi thriller is a product of low budget ingenuity.

