Between this and eXistenZ, I think we have very similar tastes in science fiction. 👽

Primer is easily misread as just a "puzzle box" of head-spinning time loops... Actually, the way I read it is more of a horror story of opening Pandora's box.

Two young men make a discovery that destroys their lives and then, as the final shot implies, the rest of the world. And somehow they know from the start that it couldn't go any other way...