worldsimulator
nounUK /ˈwɜːldˌsɪmjʊleɪtə/
US /ˈwɝːldˌsɪmjəleɪtər/
A worldsimulator is a computer program that makes a pretend world you can play in.
My brother built a worldsimulator where tiny people live in a city he made.
RELATED WORDS
OTHER MEANINGS
2. A tool scientists use to model how real places or systems might change over time.
Researchers ran a worldsimulator to see how the river would flood.
3. A machine or program that creates a fake environment for training or testing.
Pilots practice in a worldsimulator that looks like a real cockpit.
4. A person who designs pretend worlds for games or stories.
She is a worldsimulator who dreams up whole planets for her games.