I want the users to be able to import the external game map (e,g: dungeon map, field map,… with their own customization of game objects in the map) after they have downloaded it to their computer.
Are there any method to do this? I have searched through the manual documents but got nothing about this. I have thought of loading files from external source and add it into game but still cant figure it out how to make the game components in the game map to be interactable
Here you can put the files, maybe edited by your user, and read them later…
For the terrain you should write your own terrain data (Terrain.SetHeights).
3D model can be easly imported, see this free asset: