How do I prevent people from leaving the map and going into the default world across the void

I have a custom map and since its in the shape of a rectangle I am unable to use /worldborder, how can I make a custom border around the map to prevent this
5 Replies
QarthO
QarthO2y ago
Use chunky border
B0tname
B0tnameOP2y ago
thanks
QarthO
QarthO2y ago
You’ll also want chunky
B0tname
B0tnameOP2y ago
? chunky oh got it thanks

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