If you loved Cypher, try Cube
A bridge between a film you've already seen and one most people haven't. Here's what they share, and what the second one does that the first one doesn't.
What they share
Both films are directed by Vincenzo Natali, and they both carry the mindfuck mood tag, and they sit in Science Fiction / Thriller territory. If that's the register that drew you to Cypher, the second film will land in a comparable space — through a different lens.
mindfuck
What Cube is
A cube of gray corridors hums under flickering fluorescents. Six strangers wake in identical cages, numbers stamped on skin. Natali’s 1998 debut traps logic and blood inside sterile geometry.

