Is it possible to build a real world map in Roblox?

yes but you have to scale it down a lot. the terrain editor can import a heightmap, so you can grab elevation data for a real area, turn it into a greyscale image and it builds the hills and valleys for you. there's a colormap import too for grass vs rock vs sand. things that bite you: - turn on StreamingEnabled or big maps will crush phones - physics gets jittery when you're very far from the origin, so keep the map around the middle instead of making it huge - buildings and roads are still placed by hand or with plugins a town or a small island works fine. a whole country at 1:1 isn't happening.