Ray Bradbury's science-fiction has always been avant-garde, and his short story "The Veldt" is no exception as the nursery has a type of virtual reality created before such a thing has been imagined in reality. When George Hadley and his wife enter the nursery, they see that the lions in the African grassland have just finished eating, and Lydia hears a scream, but George does not. As they leave, George admires "the mechanical genius who had contrived this room."
Previously, Wendy and Peter (names right from Peter Pan) have changed the room several times. Having received the telepathic emanations from the minds of the children, life has been created according to their desires:
Wonderland as in Alice in Wonderland, the Mock Turtle, Aladdin and his Magical Lamp, or Jack Pumpkinhead of Oz, or Dr. Doolittle, or the cow jumping over a very real-appearing moon....
Of course, the problem is that the technology surpasses its restrictions and the not-so-innocent imaginings of the children now transform to a powerful dark side.