Some physicists believe we're living in a giant hologram

https://www.vox.com/2015/6/29/8847863/holographic-principle-universe-theory-physics

The Veldt_(short_story) was first published in 1950 and provides a cautionary glympse into a very advanced VR playroom. 

https://en.wikipedia.org/wiki/The_Veldt_(short_story)#Adaptations

https://matrix.fandom.com/wiki/Monsters