https://strangesounds.org/2025/10/otherworldly-disappearances.html
Welcome to the real world, the Earth Lab.
https://www.reddit.com/r/SimulationTheory/comments/1o0t18a/he_literally_cracked_realitythen_died/
In the movie Dark_City a bunch of people have been captured and kept on a huge spacecraft for some beings to conduct variolous studies and run simulations on. https://en.wikipedia.org/wiki/Dark_City_(1998_film)#Plot
Whether the Earth is a fallen world or a captured planet, most people are not allowed to know the larger aspects of this controlled reality.
In the movie They_Live, the protagonist discovers that another layer of controlled reality has been overtly imposed. https://en.wikipedia.org/wiki/They_Live#Plot
https://www.themarginalian.org/2013/09/06/how-to-build-a-universe-philip-k-dick/
https://www.goodreads.com/quotes/646-reality-is-that-which-when-you-stop-believing-in-it