> For the complete documentation index, see [llms.txt](https://docs.coherence.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.coherence.io/0.7.4/simulators/world-simulators.md).

# World Simulators

World simulators are started and shutdown with the world. They can be enabled and assigned in the Worlds section of the portal. 

World simulation servers are started with the command line parameters described in the [Simulators](/0.7.4/api-reference/simulation-server.md#command-line-parameters-in-the-cloud) section. 

![](https://2821114902-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fv0ksjqOy2jWVMwsg4f9k%2Fuploads%2FGc0EWW36la3mo5A9FMLq%2Fimage.png?alt=media\&token=b2f3c6a6-940e-4b74-b849-3a902469ab72)