It uses a proprietary .SC4M format, which allows for elevation precision of 0.1 meters, compared to the standard 2.4-meter precision of grayscale images.

SC4 Terraformer bypasses the "open city, terraform, save, reconcile" cycle that makes region-wide mapping so tedious.

Once finished, save the region within the tool. When you load the game, you may need to enter individual city tiles to "reconcile" or refresh the visual thumbnail for the first time. Essential Companion Tools SC4 Devotion

You can import 16-bit PNG height maps generated from real-world USGS data to recreate actual cities like Cincinnati or London.