Stumbled onto a thread hunting for stuff like 'Vivarium', huh? The ‘trapped in a weird suburb with cosmic horror rules’ vibe is such a specific itch. The obvious one people bring up is 'The Triangle'—wait, 'The Triangle'? No, I meant 'The Circle'. My brain. Anyway, 'The Circle' with Tom Hanks. It’s not a suburb, it’s a tech campus, but that same feeling of a shiny, perfect, suffocating panopticon is dead on. The social credit score thing mirrors the social-performance pressure of the couple in 'Vivarium' trying to be perfect parents.
Less obvious pick: 'The Incident' from 2014, not the one you're thinking of. This Spanish movie where a guy wakes up in an infinite, identical staircase. It’s the architectural nightmare and psychological spiraling, just stripped of any domestic pretense. Pure existential GPS error. Also, 'The Platform' gets thrown around for the trapped-in-a-system angle, but that’s more brutally economic than surreal. Still, that ‘rules imposed by unseen forces’ dread connects.
Honestly, I tried 'The Tenant' by Polanski recently. Old, black-and-white, but the apartment-as-trap and identity erosion? It’s not sci-fi, but it’s the same flavor of paranoid furniture. My partner walked out after twenty minutes, said it was giving her 'Vivarium' flashbacks. That’s a recommendation in my book.