Larian Studios Forums Divinity: Original Sin 2 - The Modding Dungeon Divinity - Original Sin 2 - Modding General Hide Unvisited Rooms + Prevent Automatic Usage

https://docs.larian.game/Triggers#Region_Trigger


But it's pretty straight forward, find the region trigger root template.

Place one.

I usually change the physics on the sidebar to a box unless I need a special shape.

Set the size.

Now you can't see past the trigger's bounds while you are inside it. You also cannot see inside it while on the outside.