The 13th Floor

This one involves a bit of head scratching to figure out and probably won’t make sense until seen. But, here goes: Some bright Einsteins figure out they can create virtual universes that they can control. Easy enough so far, we’re just talking the old virtual reality thing that really hasn’t worked for Hollywood yet but give them credit for continuing to try.

But here’s where it gets a little weird. After a while they find evidence that the so-called real world they live in may, in fact, be just a copy of another. So if a tree falls in the forest and no one is there to hear it fall...