In Spidersilk the novel, the main character fights off invaders from another dimension. He also visits parallel universes which he uses to inspire his video game creations. In our world, we’re still learning a lot about dimensions and universes. Despite this, scientists are in talks about making their own universe in a laboratory. If successful, this could teach use more about the universe we live, parallel universe and so much more.

For more on this, check out this link:

https://futurism.com/scientists-may-create-universe-actually-could/