How would I go about creating a top down world map?

How would I go about creating a top down world map like the ones used in Plague Inc, Age of civilizations?
Would I have to create a 3D terrain then change the cameras position to make it top down? or would I be able to import a 2D map?

Thanks!


Create a 3d terrain if:

  1. You are going to have camera effects on your game (different angles or light effects, so you may see the elevation)
  2. Terrain may be modified (explosions, things growing or disappearing)

else the best way to go is a 2d texture, much simpler, actually even with the 2d texture you can create stuff like normals or displacement maps to make the map get affected by lighting if you need, and with the material editor you can make every kind of effects, getting darker or brighter, clouds moving and everything…
you can do basically everything with a material so id say 2d is the way to go.

Just import a texture and place it on a Plane