You can create alternative realities/worlds in our current mundane reality.
But before anyone can build anything:
Their first Artifact
Language
Zone
Eco-system & World
They first need to know their Zero.
My first ever Artifact was created because I knew my 0. And because of a lot of sessions of introspection, I am able to discern when I am off track.
A lot of people move through the fog, on a bridge, hoping to reach a destination, they don't know exists. They just move, because that is what they've seen others do.
But if they had known their Zero, they would realize that there is not just one path to Level 1.
They would be able to create or find tools that would help them move through the fog to the next level.
So if you want to build something:
A business
A brand
A product
An experience
An exciting life
You must first know your 0.
Then you'll have the map to move to Level 1.