# Simulator Slugs

When using the Simulator Upload Wizard in Unity, you can specify a "simulator slug". This is simply a unique identifier for simulator. This value is automatically saved in RuntimeSettings when an upload is complete, and Room creation requests will use this value to identify which simulator should be started alongside your room.

The simulator slug can be any string value, but we recommend using something descriptive. If the same slug is used between two uploads, the later upload will overwrite the previous simulator.

![](/files/fjyxdEJISlO5UP7l43DG)

A list of uploaded simulators and their corresponding slugs can be found in the Developer Portal:

![](/files/hiTTHjBIdhi1WWA4Vup6)


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