To join games on a Quest, you can copy the Spark link to the the Spark application on your phone.
Alternatively, download and install the Echoist Spark APK via SideQuest. Open the app on your Quest to join games directly.
A locked arena will make it private, only to people with the four-digit number you provide.
An arena has been created, you must join within 30 seconds.
This code must be used by others to reveal the link: